3508B 649 bkW

(870 bhp)
MARINE AUXILIARY 882 mhp

SPECIFICATIONS
V-8, 4-Stroke-Cycle-Diesel
Emissions . . . . . . . . . . . . . . . . . . . . . . . . . . . IMO compliant
Displacement . . . . . . . . . . . . . . . . . . . 34.5 L (2105 cu. in.)
Rated Engine Speed . . . . . . . . . . . . . . . . . . . . . . 1000 rpm
IMAGE IS NOT Bore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170 mm (6.7 in.)
AVAILABLE Stroke. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190 mm (7.5 in.)
Aspiration . . . . . . . . . . . . . . . . Turbocharged-Aftercooled
Governor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Electronic
Engine Weight, Net Dry (approx) . . 5216 kg (11,500 lb)
Capacity for Liquids
Cooling System (engine only) . . 285 L (75.3 U.S. gal)
Lube Oil System . . . . . . . . . . . . . . . 223 L (59 U.S. gal)
Oil Change Interval . . . . . . . . . . . . . . . . . . . . . . . . . . 500 hr
Caterpillar® DEO 10W30 or 15W40
Rotation (from flywheel end) . . . . . . . Counterclockwise
or Clockwise

STANDARD EQUIPMENT ACCESSORY EQUIPMENT

Air Inlet System 24V 60 Amp Alternator
Corrosion-resistant separate circuit aftercooler core 24V Electric Starting Motor
(air side); regular duty air cleaner; dual Air Inlet Overspeed Shutoffs
turbochargers, 152 mm (6 in.) OD Air Starting Motor
Auxiliary Drive Pulley and Shaft
Cooling System
Crankshaft Pulleys
Non-self-priming centrifugal auxiliary sea water Customer Communication Module (CCM)
pump, gear driven centrifugal jacket water pump, Deep Sump Oil Pan
auxiliary fresh water pump, expansion tank, oil Dual Jacket Water Heater
cooler, thermostats and housing with 92°C (198°F) Duplex Fuel Filter
full open temperature Duplex Oil Filter
Exhaust System Exhaust Elbow, Flange, Flexible Fitting
Dry gas tight manifolds with thermo-laminated heat Front Enclosed Clutch
shields; dual turbochargers with water cooled Front Stub Shafts
bearings and thermo-laminated heat shields; vertical Generators — 630 to 910 ekW
exhaust outlet, 203 mm (8 in.) round flanged outlet Air Filter, Bearing Temperature Detectors, Low
Voltage Extension Box, RFI Filter, Voltage Regulator
Flywheel and Flywheel Housing (Auto, Digital, Manual)
SAE No. 00 (183 teeth) Heat Exchanger
Fuel System Instrument Panel Extension Harness — 8M or 16M
Keel Cooling Connections
RH fuel filter with service indicators, fuel transfer
LH Engine-Mounted Instrument Panel
pump, Electronic Unit Injector (EUI) fuel system LH Fuel Priming Pump
Instruments Load Sharing Module
RH instrument panel with oil pressure, water Premium Wiring Harness
temperature, and fuel pressure gauges; system DC Program Relay Control Module
voltage gauge; air inlet restriction gauge; exhaust Pyrometer and Thermocouples
temperature gauges; fuel and oil filter differential Pyrometer Extension Harness — 8M or 16M
pressure gauges; service meter; tachometer; Radiator Cooling Conversion
instantaneous fuel consumption; four-position Self-Priming Auxiliary Sea Water Pump
start-stop Shutoff and Alarm Contactors for Oil Pres. and Water
Temp.
Lube System Spare Parts Kit
Top-mounted crankcase breather, RH oil filter and oil Sump Pump
level gauge, gear-type oil pump, standard sump oil pan Upper RH Front Accessory Drives
Mounting System PERFORMANCE DATA
Engine length mounting rails, 254 mm (10 in.);
C-channel Turbocharged-Aftercooled
DM4553-01 Aftercooler Temperature 30°C (86°F)
Power Take-Offs
Lower RH and LH accessory drive, two-sided front 649 bkW (.8 pf) 870 bhp
housing % load bkW Lph gph
General 100 645 158.6 41.9
Vibration damper and guard, Caterpillar yellow paint, 75 478 115.8 30.6
lifting eyes 50 317 79.0 20.9
25 164 42.2 11.1
LEHM1633-01 Page 1 of 2
 3508B MARINE AUXILIARY
649 bkW (870 bhp) 882 mhp

Right Side Front Footprint

03

02

03
H
01 01 01 02 02

L W

03
02
03

DIMENSIONS*
mm in.
Overall Length 2350.4 92.5
Length from front to rear face of block 1880.0 74.0
Length from rear face of block to back of engine 470.4 18.5
Overall Height 1806.3 71.1
Height from crankshaft centerline to top of engine 1247.8 49.1
Height from crankshaft centerline to bottom of rails 558.5 22.0
Overall Width 1703.0 67.1
Width from crankshaft centerline to port side (left side) 851.5 33.5
Width from crankshaft centerline to starboard side 851.5 33.5
(right side)
Front Rear
mm in. mm in.
Customer mounting hole diameter 23.8 0.9 23.8 0.9
Width from crankshaft centerline to side 444.5 17.5 444.5 17.5
Length from rear face of block to mounting hole 1196.0 47.1 65.7 2.6
1272.2 50.1 141.9 5.6
10.5 0.4
*Illustrations and dimensions from drawing: 125-6278.

RATING CONDITIONS
Engine Performance Parameters Fuel rates are based on fuel oil of 35° API
Power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +3% [16°C (60°F)] gravity having an LHV of 42 780 kJ/kg
Specific Fuel Consumption . . . . . . . . . . . . . . . . . . . . +3% (18,390 Btu/lb) when used at 29°C (85°F) and
Fuel Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +5% weighing 838.9 g/L (7.001 lb/U.S. gal).
Ratings are based on SAE J1228/ISO8665 standard Additional ratings may be available for specific
conditions of 100 kPa (29.61 in. Hg), 25°C (77°F), and customer requirements. Consult your Caterpillar
30% relative humidity. These ratings also apply at representative for additional information.
ISO3046/1, DIN6271/3, and BS5514 conditions of
100 kPa (29.61 in. Hg), 27°C (81°F), and 60% relative
humidity.

Performance data is calculated in accordance with tolerances and conditions stated in this specification sheet and is only intended for purposes of
comparison with other manufacturers’ engines. Actual engine performance may vary according to the particular application of the engine and
operating conditions beyond Caterpillar’s control.
CAT, CATERPILLAR, their respective logos, “Caterpillar Yellow” and the POWER EDGE trade dress, as well as corporate and product identity used
herein, are trademarks of Caterpillar and may not be used without permission.

©2007 Caterpillar
TMI Reference No.: DM4553-01 All rights reserved.
LEHM1633-01 (8-07) Materials and specifications are subject to change without notice.
The International System of Units (SI) is used in this publication.
 3508B 673 bkW
(903 bhp)
MARINE AUXILIARY 916 mhp

SPECIFICATIONS
V-8, 4-Stroke-Cycle-Diesel
Emissions . . . . . . . . . . . . . . . . . . . . . . . . . . . IMO compliant
Displacement . . . . . . . . . . . . . . . . . . . 34.5 L (2105 cu. in.)
Rated Engine Speed . . . . . . . . . . . . . . . . . . . . . . 1500 rpm
IMAGE IS NOT Bore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170 mm (6.7 in.)
AVAILABLE Stroke. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190 mm (7.5 in.)
Aspiration . . . . . . . . . . . . . . . . Turbocharged-Aftercooled
Governor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Electronic
Engine Weight, Net Dry (approx) . . 5216 kg (11,500 lb)
Capacity for Liquids
Cooling System (engine only) . . 285 L (75.3 U.S. gal)
Lube Oil System . . . . . . . . . . . . . . . 223 L (59 U.S. gal)
Oil Change Interval . . . . . . . . . . . . . . . . . . . . . . . . . . 500 hr
Caterpillar® DEO 10W30 or 15W40
Rotation (from flywheel end) . . . . . . . Counterclockwise
Flywheel and Flywheel Housing . . . . . . . . . . SAE No. 00
Flywheel Teeth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183

STANDARD ENGINE EQUIPMENT

Air Inlet System Lube System
Corrosion-resistant separate circuit aftercooler core Top-mounted crankcase breather, RH oil filter and oil
(air side); regular duty air cleaner; dual turbochargers, level gauge, gear-type oil pump, standard sump oil
152 mm (6 in.) OD pan
Cooling System Mounting System
Non-self-priming centrifugal auxiliary sea water Engine length mounting rails, 254 mm (10 in.); C-
pump, gear driven centrifugal jacket water pump, channel
auxiliary fresh water pump, expansion tank, oil Power Take-Offs
cooler, thermostats and housing with 92°C (198°F) full Lower RH and LH accessory drive, two-sided front
open temperature housing
Exhaust System Protection System
Dry gas tight manifolds with thermo-laminated heat ADEM II electronic monitoring system with customer
shields; dual turbochargers with water cooled programmable engine deration strategies, emergency
bearings and thermo-laminated heat shields; vertical stop pushbutton
exhaust outlet, 203 mm (8 in.) round flanged outlet
General
Fuel System Vibration damper and guard, Caterpillar yellow paint,
RH fuel filter with service indicators, fuel transfer lifting eyes
pump, Electronic Unit Injector (EUI) fuel system
Instrumentation
RH electronic instrument panel with analog gauges
and digital display of data for oil and fuel pressure, oil
and fuel filter differential, system DC voltage, exhaust
and water temperature, and air inlet restriction; digital
display only for tachometer, service meter, and fuel
consumption (total and instantaneous); engine
start/stop switch

PERFORMANCE DATA
Turbocharged-Aftercooled Turbocharged-Aftercooled
DM4554-02 Aftercooler Temperature 30°C (86°F) DM4560-02 Aftercooler Temperature 60°C (140°F)
663 bkW (.8 pf) 889 bhp 663 bkW (.8 pf) 889 bhp
% load bkW Lph gph % load bkW Lph gph
100 663 157 41.4 100 663 160 42.2
75 495 120 31.8 75 495 122 32.3
50 330 84 22.3 50 330 86 22.6
25 168 49 13.1 25 168 50 13.2

LEHM3881-01 Page 1 of 2
 3508B MARINE AUXILIARY
673 bkW (903 bhp) 916 mhp

Right Side Front Footprint

03

02

03
H
01 01 01 02 02

L W

03
02
03

DIMENSIONS*
mm in.
Overall Length 2350.4 92.5
Length from front to rear face of block 1880.0 74.0
Length from rear face of block to back of engine 470.4 18.5
Overall Height 1806.3 71.1
Height from crankshaft centerline to top of engine 1247.8 49.1
Height from crankshaft centerline to bottom of rails 558.5 22.0
Overall Width 1703.0 67.1
Width from crankshaft centerline to port side (left side) 851.5 33.5
Width from crankshaft centerline to starboard side 851.5 33.5
(right side)
Front Rear
mm in. mm in.
Customer mounting hole diameter 23.8 0.9 23.8 0.9
Width from crankshaft centerline to side 444.5 17.5 444.5 17.5
Length from rear face of block to mounting hole 1196.0 47.1 65.7 2.6
1272.2 50.1 141.9 5.6
10.5 0.4
*Illustrations and dimensions from drawing: 125-6278.

RATING CONDITIONS
Ratings are based on SAE J1228/ISO8665 standard Fuel rates are based on fuel oil of 35° API [16°C
conditions of 100 kPa (29.61 in. Hg), 25°C (77°F), and (60°F)] gravity having an LHV of 42 780 kJ/kg
30% relative humidity. These ratings also apply at (18,390 Btu/lb) when used at 29°C (85°F) and
ISO3046/1, DIN6271/3, and BS5514 conditions of weighing 838.9 g/L (7.001 lb/U.S. gal).
100 kPa (29.61 in. Hg), 27°C (81°F), and 60% relative
Additional ratings may be available for specific
humidity.
customer requirements. Consult your Caterpillar
representative for additional information.

Performance data is calculated in accordance with tolerances and conditions stated in this specification sheet and is only intended for purposes of
comparison with other manufacturers’ engines. Actual engine performance may vary according to the particular application of the engine and
operating conditions beyond Caterpillar’s control.
CAT, CATERPILLAR, their respective logos, “Caterpillar Yellow” and the POWER EDGE trade dress, as well as corporate and product identity used
herein, are trademarks of Caterpillar and may not be used without permission.

TMI Reference No.: DM4554-02, DM4560-02 ©2007 Caterpillar

U.S. Sourced All rights reserved.
LEHM3881-01 (8-07) Materials and specifications are subject to change without notice.
The International System of Units (SI) is used in this publication.
 3508B 682 bkW
(915 bhp)
MARINE AUXILIARY 928 mhp

SPECIFICATIONS
V-8, 4-Stroke-Cycle-Diesel
Emissions . . . . . . . . . . . . . . . . . . . . . . . . . . . IMO compliant
Displacement . . . . . . . . . . . . . . . . . . . 34.5 L (2105 cu. in.)
Rated Engine Speed . . . . . . . . . . . . . . . . . . . . . . 1200 rpm
IMAGE IS NOT Bore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170 mm (6.7 in.)
AVAILABLE Stroke. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190 mm (7.5 in.)
Aspiration . . . . . . . . . . . . . . . . Turbocharged-Aftercooled
Governor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Electronic
Engine Weight, Net Dry (approx) . . 5216 kg (11,500 lb)
Capacity for Liquids
Cooling System (engine only) . . 285 L (75.3 U.S. gal)
Lube Oil System . . . . . . . . . . . . . . . 223 L (59 U.S. gal)
Oil Change Interval . . . . . . . . . . . . . . . . . . . . . . . . . . 500 hr
Caterpillar® DEO 10W30 or 15W40
Rotation (from flywheel end) . . . . . . . Counterclockwise
or Clockwise

STANDARD EQUIPMENT ACCESSORY EQUIPMENT

Air Inlet System 24V 60 Amp Alternator
Corrosion-resistant separate circuit aftercooler core 24V Electric Starting Motor
(air side); regular duty air cleaner; dual Air Inlet Overspeed Shutoffs
turbochargers, 152 mm (6 in.) OD Air Starting Motor
Auxiliary Drive Pulley and Shaft
Cooling System
Crankshaft Pulleys
Non-self-priming centrifugal auxiliary sea water Customer Communication Module (CCM)
pump, gear driven centrifugal jacket water pump, Deep Sump Oil Pan
auxiliary fresh water pump, expansion tank, oil Dual Jacket Water Heater
cooler, thermostats and housing with 92°C (198°F) Duplex Fuel Filter
full open temperature Duplex Oil Filter
Exhaust System Exhaust Elbow, Flange, Flexible Fitting
Dry gas tight manifolds with thermo-laminated heat Front Enclosed Clutch
shields; dual turbochargers with water cooled Front Stub Shafts
bearings and thermo-laminated heat shields; vertical Generators — 630 to 910 ekW
exhaust outlet, 203 mm (8 in.) round flanged outlet Air Filter, Bearing Temperature Detectors, Low
Voltage Extension Box, RFI Filter, Voltage Regulator
Flywheel and Flywheel Housing (Auto, Digital, Manual)
SAE No. 00 (183 teeth) Heat Exchanger
Fuel System Instrument Panel Extension Harness — 8M or 16M
Keel Cooling Connections
RH fuel filter with service indicators, fuel transfer
LH Engine-Mounted Instrument Panel
pump, Electronic Unit Injector (EUI) fuel system LH Fuel Priming Pump
Instruments Load Sharing Module
RH instrument panel with oil pressure, water Premium Wiring Harness
temperature, and fuel pressure gauges; system DC Program Relay Control Module
voltage gauge; air inlet restriction gauge; exhaust Pyrometer and Thermocouples
temperature gauges; fuel and oil filter differential Pyrometer Extension Harness — 8M or 16M
pressure gauges; service meter; tachometer; Radiator Cooling Conversion
instantaneous fuel consumption; four-position Self-Priming Auxiliary Sea Water Pump
start-stop Shutoff and Alarm Contactors for Oil Pres. and Water
Temp.
Lube System Spare Parts Kit
Top-mounted crankcase breather, RH oil filter and oil Sump Pump
level gauge, gear-type oil pump, standard sump oil pan Upper RH Front Accessory Drives
Mounting System PERFORMANCE DATA
Engine length mounting rails, 254 mm (10 in.);
C-channel Turbocharged-Aftercooled
DM4550-03 Aftercooler Temperature 30°C (86°F)
Power Take-Offs
Lower RH and LH accessory drive, two-sided front 682 bkW (.8 pf) 915 bhp
housing % load bkW Lph gph
General 100 634 161.2 42.6
Vibration damper and guard, Caterpillar yellow paint, 75 476 122.6 32.4
lifting eyes 50 320 84.2 22.2
25 166 49.7 13.1
LEHM1632-01 Page 1 of 2
 3508B MARINE AUXILIARY
682 bkW (915 bhp) 928 mhp

Right Side Front Footprint

03

02

03
H
01 01 01 02 02

L W

03
02
03

DIMENSIONS*
mm in.
Overall Length 2350.4 92.5
Length from front to rear face of block 1880.0 74.0
Length from rear face of block to back of engine 470.4 18.5
Overall Height 1806.3 71.1
Height from crankshaft centerline to top of engine 1247.8 49.1
Height from crankshaft centerline to bottom of rails 558.5 22.0
Overall Width 1703.0 67.1
Width from crankshaft centerline to port side (left side) 851.5 33.5
Width from crankshaft centerline to starboard side 851.5 33.5
(right side)
Front Rear
mm in. mm in.
Customer mounting hole diameter 23.8 0.9 23.8 0.9
Width from crankshaft centerline to side 444.5 17.5 444.5 17.5
Length from rear face of block to mounting hole 1196.0 47.1 65.7 2.6
1272.2 50.1 141.9 5.6
10.5 0.4
*Illustrations and dimensions from drawing: 125-6278.

RATING CONDITIONS
Engine Performance Parameters Fuel rates are based on fuel oil of 35° API
Power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +3% [16°C (60°F)] gravity having an LHV of 42 780 kJ/kg
Specific Fuel Consumption . . . . . . . . . . . . . . . . . . . . +3% (18,390 Btu/lb) when used at 29°C (85°F) and
Fuel Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +5% weighing 838.9 g/L (7.001 lb/U.S. gal).
Ratings are based on SAE J1228/ISO8665 standard Additional ratings may be available for specific
conditions of 100 kPa (29.61 in. Hg), 25°C (77°F), and customer requirements. Consult your Caterpillar
30% relative humidity. These ratings also apply at representative for additional information.
ISO3046/1, DIN6271/3, and BS5514 conditions of
100 kPa (29.61 in. Hg), 27°C (81°F), and 60% relative
humidity.

Performance data is calculated in accordance with tolerances and conditions stated in this specification sheet and is only intended for purposes of
comparison with other manufacturers’ engines. Actual engine performance may vary according to the particular application of the engine and
operating conditions beyond Caterpillar’s control.
CAT, CATERPILLAR, their respective logos, “Caterpillar Yellow” and the POWER EDGE trade dress, as well as corporate and product identity used
herein, are trademarks of Caterpillar and may not be used without permission.

©2007 Caterpillar
TMI Reference No.: DM4550-03 All rights reserved.
LEHM1632-01 (8-07) Materials and specifications are subject to change without notice.
The International System of Units (SI) is used in this publication.
 3508B 760 bkW
(1019 bhp)
MARINE AUXILIARY 1033 mhp

SPECIFICATIONS
V-8, 4-Stroke-Cycle-Diesel
Emissions . . . . . . . . . . . . . . . . . . . . . . . . . . . IMO compliant
Displacement . . . . . . . . . . . . . . . . . . . 34.5 L (2105 cu. in.)
Rated Engine Speed . . . . . . . . . . . . . . . . . . . . . . 1800 rpm
IMAGE IS NOT Bore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170 mm (6.7 in.)
AVAILABLE Stroke. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190 mm (7.5 in.)
Aspiration . . . . . . . . . . . . . . . . Turbocharged-Aftercooled
Governor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Electronic
Engine Weight, Net Dry (approx) . . 5216 kg (11,500 lb)
Capacity for Liquids
Cooling System (engine only) . . 285 L (75.3 U.S. gal)
Lube Oil System . . . . . . . . . . . . . . . 223 L (59 U.S. gal)
Oil Change Interval . . . . . . . . . . . . . . . . . . . . . . . . . . 500 hr
Caterpillar® DEO 10W30 or 15W40
Rotation (from flywheel end) . . . . . . . Counterclockwise
or Clockwise

STANDARD EQUIPMENT ACCESSORY EQUIPMENT

Air Inlet System 24V 60 Amp Alternator
Corrosion-resistant separate circuit aftercooler core 24V Electric Starting Motor
(air side); regular duty air cleaner; dual Air Inlet Overspeed Shutoffs
turbochargers, 152 mm (6 in.) OD Air Starting Motor
Auxiliary Drive Pulley and Shaft
Cooling System
Crankshaft Pulleys
Non-self-priming centrifugal auxiliary sea water Customer Communication Module (CCM)
pump, gear driven centrifugal jacket water pump, Deep Sump Oil Pan
auxiliary fresh water pump, expansion tank, oil Dual Jacket Water Heater
cooler, thermostats and housing with 92°C (198°F) Duplex Fuel Filter
full open temperature Duplex Oil Filter
Exhaust System Exhaust Elbow, Flange, Flexible Fitting
Dry gas tight manifolds with thermo-laminated heat Front Enclosed Clutch
shields; dual turbochargers with water cooled Front Stub Shafts
bearings and thermo-laminated heat shields; vertical Generators — 630 to 910 ekW
exhaust outlet, 203 mm (8 in.) round flanged outlet Air Filter, Bearing Temperature Detectors, Low
Voltage Extension Box, RFI Filter, Voltage Regulator
Flywheel and Flywheel Housing (Auto, Digital, Manual)
SAE No. 00 (183 teeth) Heat Exchanger
Fuel System Instrument Panel Extension Harness — 8M or 16M
Keel Cooling Connections
RH fuel filter with service indicators, fuel transfer
LH Engine-Mounted Instrument Panel
pump, Electronic Unit Injector (EUI) fuel system LH Fuel Priming Pump
Instruments Load Sharing Module
RH instrument panel with oil pressure, water Premium Wiring Harness
temperature, and fuel pressure gauges; system DC Program Relay Control Module
voltage gauge; air inlet restriction gauge; exhaust Pyrometer and Thermocouples
temperature gauges; fuel and oil filter differential Pyrometer Extension Harness — 8M or 16M
pressure gauges; service meter; tachometer; Radiator Cooling Conversion
instantaneous fuel consumption; four-position Self-Priming Auxiliary Sea Water Pump
start-stop Shutoff and Alarm Contactors for Oil Pres. and Water
Temp.
Lube System Spare Parts Kit
Top-mounted crankcase breather, RH oil filter and oil Sump Pump
level gauge, gear-type oil pump, standard sump oil pan Upper RH Front Accessory Drives
Mounting System PERFORMANCE DATA
Engine length mounting rails, 254 mm (10 in.);
C-channel Turbocharged-Aftercooled
DM4551-02 Aftercooler Temperature 30°C (86°F)
Power Take-Offs
Lower RH and LH accessory drive, two-sided front 760 bkW (.8 pf) 1019 bhp
housing % load bkW Lph gph
General 100 753 186.8 49.3
Vibration damper and guard, Caterpillar yellow paint, 75 562 143.9 38.0
lifting eyes 50 375 101.7 26.9
25 191 60.6 16.0
LEHM1630-01 Page 1 of 2
 3508B MARINE AUXILIARY
760 bkW (1019 bhp) 1033 mhp

Right Side Front Footprint

03

02

03
H
01 01 01 02 02

L W

03
02
03

DIMENSIONS*
mm in.
Overall Length 2350.4 92.5
Length from front to rear face of block 1880.0 74.0
Length from rear face of block to back of engine 470.4 18.5
Overall Height 1806.3 71.1
Height from crankshaft centerline to top of engine 1247.8 49.1
Height from crankshaft centerline to bottom of rails 558.5 22.0
Overall Width 1703.0 67.1
Width from crankshaft centerline to port side (left side) 851.5 33.5
Width from crankshaft centerline to starboard side 851.5 33.5
(right side)
Front Rear
mm in. mm in.
Customer mounting hole diameter 23.8 0.9 23.8 0.9
Width from crankshaft centerline to side 444.5 17.5 444.5 17.5
Length from rear face of block to mounting hole 1196.0 47.1 65.7 2.6
1272.2 50.1 141.9 5.6
10.5 0.4
*Illustrations and dimensions from drawing: 125-6278.

RATING CONDITIONS
Engine Performance Parameters Fuel rates are based on fuel oil of 35° API
Power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +3% [16°C (60°F)] gravity having an LHV of 42 780 kJ/kg
Specific Fuel Consumption . . . . . . . . . . . . . . . . . . . . +3% (18,390 Btu/lb) when used at 29°C (85°F) and
Fuel Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +5% weighing 838.9 g/L (7.001 lb/U.S. gal).
Ratings are based on SAE J1228/ISO8665 standard Additional ratings may be available for specific
conditions of 100 kPa (29.61 in. Hg), 25°C (77°F), and customer requirements. Consult your Caterpillar
30% relative humidity. These ratings also apply at representative for additional information.
ISO3046/1, DIN6271/3, and BS5514 conditions of
100 kPa (29.61 in. Hg), 27°C (81°F), and 60% relative
humidity.

Performance data is calculated in accordance with tolerances and conditions stated in this specification sheet and is only intended for purposes of
comparison with other manufacturers’ engines. Actual engine performance may vary according to the particular application of the engine and
operating conditions beyond Caterpillar’s control.
CAT, CATERPILLAR, their respective logos, “Caterpillar Yellow” and the POWER EDGE trade dress, as well as corporate and product identity used
herein, are trademarks of Caterpillar and may not be used without permission.

©2007 Caterpillar
TMI Reference No.: DM4551-02 All rights reserved.
LEHM1630-01 (8-07) Materials and specifications are subject to change without notice.
The International System of Units (SI) is used in this publication.
 3508B 968 bkW
(1298 bhp)
MARINE AUXILIARY 1316 mhp

SPECIFICATIONS
V-8, 4-Stroke-Cycle-Diesel
Emissions . . . . . . . . . . . . . . . . . . . . . . . . . . . IMO compliant
Displacement . . . . . . . . . . . . . . . . . . . 34.5 L (2105 cu. in.)
Rated Engine Speed . . . . . . . . . . . . . . . . . . . . . . 1800 rpm
IMAGE IS NOT Bore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170 mm (6.7 in.)
AVAILABLE Stroke. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190 mm (7.5 in.)
Aspiration . . . . . . . . . . . . . . . . Turbocharged-Aftercooled
Governor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Electronic
Engine Weight, Net Dry (approx) . . 5216 kg (11,500 lb)
Capacity for Liquids
Cooling System (engine only) . . 285 L (75.3 U.S. gal)
Lube Oil System . . . . . . . . . . . . . . . 223 L (59 U.S. gal)
Oil Change Interval . . . . . . . . . . . . . . . . . . . . . . . . . . 500 hr
Caterpillar® DEO 10W30 or 15W40
Rotation (from flywheel end) . . . . . . . Counterclockwise
or Clockwise
STANDARD EQUIPMENT ACCESSORY EQUIPMENT
Air Inlet System 24V 60 Amp Alternator
Corrosion-resistant separate circuit aftercooler core 24V Electric Starting Motor
(air side); regular duty air cleaner; dual Air Inlet Overspeed Shutoffs
turbochargers, 152 mm (6 in.) OD Air Starting Motor
Auxiliary Drive Pulley and Shaft
Cooling System
Crankshaft Pulleys
Non-self-priming centrifugal auxiliary sea water Customer Communication Module (CCM)
pump, gear driven centrifugal jacket water pump, Deep Sump Oil Pan
auxiliary fresh water pump, expansion tank, oil Dual Jacket Water Heater
cooler, thermostats and housing with 92°C (198°F) Duplex Fuel Filter
full open temperature Duplex Oil Filter
Exhaust System Exhaust Elbow, Flange, Flexible Fitting
Dry gas tight manifolds with thermo-laminated heat Front Enclosed Clutch
shields; dual turbochargers with water cooled Front Stub Shafts
bearings and thermo-laminated heat shields; vertical Generators — 630 to 910 ekW
exhaust outlet, 203 mm (8 in.) round flanged outlet Air Filter, Bearing Temperature Detectors, Low
Voltage Extension Box, RFI Filter, Voltage Regulator
Flywheel and Flywheel Housing (Auto, Digital, Manual)
SAE No. 00 (183 teeth) Heat Exchanger
Fuel System Instrument Panel Extension Harness — 8M or 16M
Keel Cooling Connections
RH fuel filter with service indicators, fuel transfer
LH Engine-Mounted Instrument Panel
pump, Electronic Unit Injector (EUI) fuel system LH Fuel Priming Pump
Instruments Load Sharing Module
RH instrument panel with oil pressure, water Premium Wiring Harness
temperature, and fuel pressure gauges; system DC Program Relay Control Module
voltage gauge; air inlet restriction gauge; exhaust Pyrometer and Thermocouples
temperature gauges; fuel and oil filter differential Pyrometer Extension Harness — 8M or 16M
pressure gauges; service meter; tachometer; Radiator Cooling Conversion
instantaneous fuel consumption; four-position Self-Priming Auxiliary Sea Water Pump
start-stop Shutoff and Alarm Contactors for Oil Pres. and Water
Temp.
Lube System Spare Parts Kit
Top-mounted crankcase breather, RH oil filter and oil Sump Pump
level gauge, gear-type oil pump, standard sump oil pan Upper RH Front Accessory Drives
Mounting System PERFORMANCE DATA
Engine length mounting rails, 254 mm (10 in.);
C-channel Turbocharged-Aftercooled
DM4552-02 Aftercooler Temperature 30°C (86°F)
Power Take-Offs
Lower RH and LH accessory drive, two-sided front 968 bkW (.8 pf) 1298 bhp
housing % load bkW Lph gph
General 100 958 233.4 61.7
Vibration damper and guard, Caterpillar yellow paint, 75 715 178.4 47.1
lifting eyes 50 477 124.8 33.0
25 243 72.0 19.0
LEHM1628-01 Page 1 of 2
 3508B MARINE AUXILIARY
968 bkW (1298 bhp) 1316 mhp

Right Side Front Footprint

03

02

03
H
01 01 01 02 02

L W

03
02
03

DIMENSIONS*
mm in.
Overall Length 2350.4 92.5
Length from front to rear face of block 1880.0 74.0
Length from rear face of block to back of engine 470.4 18.5
Overall Height 1806.3 71.1
Height from crankshaft centerline to top of engine 1247.8 49.1
Height from crankshaft centerline to bottom of rails 558.5 22.0
Overall Width 1703.0 67.1
Width from crankshaft centerline to port side (left side) 851.5 33.5
Width from crankshaft centerline to starboard side 851.5 33.5
(right side)
Front Rear
mm in. mm in.
Customer mounting hole diameter 23.8 0.9 23.8 0.9
Width from crankshaft centerline to side 444.5 17.5 444.5 17.5
Length from rear face of block to mounting hole 1196.0 47.1 65.7 2.6
1272.2 50.1 141.9 5.6
10.5 0.4
*Illustrations and dimensions from drawing: 125-6278.

RATING CONDITIONS
Engine Performance Parameters Fuel rates are based on fuel oil of 35° API
Power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +3% [16°C (60°F)] gravity having an LHV of 42 780 kJ/kg
Specific Fuel Consumption . . . . . . . . . . . . . . . . . . . . +3% (18,390 Btu/lb) when used at 29°C (85°F) and
Fuel Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +5% weighing 838.9 g/L (7.001 lb/U.S. gal).
Ratings are based on SAE J1228/ISO8665 standard Additional ratings may be available for specific
conditions of 100 kPa (29.61 in. Hg), 25°C (77°F), and customer requirements. Consult your Caterpillar
30% relative humidity. These ratings also apply at representative for additional information.
ISO3046/1, DIN6271/3, and BS5514 conditions of
100 kPa (29.61 in. Hg), 27°C (81°F), and 60% relative
humidity.

Performance data is calculated in accordance with tolerances and conditions stated in this specification sheet and is only intended for purposes of
comparison with other manufacturers’ engines. Actual engine performance may vary according to the particular application of the engine and
operating conditions beyond Caterpillar’s control.
CAT, CATERPILLAR, their respective logos, “Caterpillar Yellow” and the POWER EDGE trade dress, as well as corporate and product identity used
herein, are trademarks of Caterpillar and may not be used without permission.

©2007 Caterpillar
TMI Reference No.: DM4552-02 All rights reserved.
LEHM1628-01 (8-07) Materials and specifications are subject to change without notice.
The International System of Units (SI) is used in this publication.