The Caterpillar 3512B is a 51.8 L 12-cylinder ta engine rated at 1800 rpm, producing up to 1450 kW. It powers generator sets from Caterpillar, including the 3412, 3508, 3512 and PM 1360 RENTAL. It holds 644 L (170.1 gal) of oil and 156.9 L (41.4 gal) of coolant.
Also known as: Caterpillar 3512B
Part of the Caterpillar 3512B engine family — 6 variants share parts & fitment.
The cheapest captured merchant offer per filter — see the full cross-reference below for every OEM/aftermarket option.
Prices captured from merchant listings; some links are affiliate links. Verify against your serial number before ordering.
| Oil capacity | 644.0 L |
|---|---|
| Coolant capacity | 156.9 L |
| Displacement | 51.8 L |
| Cylinders | 12 |
| Aspiration | TA |
| Rated speed | 1800 rpm |
| Gross power | 1450 kW |
Compiled from service & troubleshooting documentation across every generator set that uses the Caterpillar 3512B.
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | — | ||||
| Fuel filter | — | 1000 hr | |||
| Oil filter | 1U-8760 | Amazon eBay | |||
| Battery | 245-5829 | Amazon eBay $98.00 | |||
| Belt | — | ||||
| Coolant | 9S-8140 | Amazon eBay | |||
| Oil | 644.0 L | — | 1000 hr | ||
| Spark plug | — |
Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.
Step-by-step procedures compiled from the Caterpillar service manual for this engine.
| Item | Action | Hours | Months | Notes |
|---|---|---|---|---|
| System | Test | 1 hr | ToCI quarterly: exercise system under full load for 1 hour | |
| Cooling System Coolant Level | Check | 8 hr | Daily | |
| Driven Equipment | Other | 8 hr | Daily; Inspect/Replace/Lubricate | |
| Engine Air Cleaner Differential Pressure | Check | 8 hr | Daily | |
| Engine Air Precleaner | Clean | 8 hr | Daily | |
| Engine Oil Filter Differential Pressure | Check | 8 hr | Daily | |
| Engine Oil Level | Check | 8 hr | Daily | |
| Fuel System Fuel Filter Differential Pressure | Check | 8 hr | Daily | |
| Fuel System Primary Filter/Water Separator | Drain | 8 hr | Daily | |
| Fuel Tank Water and Sediment | Drain | 250 hr | 12 mo | Daily |
| Instrument Panel | Inspect | 8 hr | Daily | |
| Walk-Around Inspection | Inspect | 8 hr | Daily | |
| Sea Water Strainer | Clean | 50 hr | When required and every 3800 L (1000 US gal) of fuel or 50 service hours | |
| Zinc Rods | Inspect | 50 hr | When required and every 3800 L (1000 US gal) of fuel or 50 service hours; replace when deteriorated | |
| Engine oil (S-O-S oil sample) | Test | 125 hr | Severe service occurs at high loads, in high temperatures, and in dusty conditions | |
| Alternator Belt | Inspect | 250 hr | 12 mo | Inspect/adjust/replace; every 12 750 L (3375 US gal) of fuel or 250 h or yearly (8RG1-Up); every 19 000 L (5000 US gal) or 250 h or yearly (REA1-Up, 3JK1-Up, 7BL1-Up) |
| Alternator and Fan Belts | Inspect | 250 hr | Every 250 Service Hours; Inspect/Adjust/Replace | |
| Battery Electrolyte Level | Check | 250 hr | 12 mo | Every 250 Service Hours |
| Belts | Adjust | 250 hr | ||
| Belts | Inspect | 250 hr | Inspect/Adjust/Replace; Every 250 Service Hours | |
| Coolant (S-O-S coolant analysis Level 1) | Test | 250 hr | Cat ELC - Every 250 Hours; also the recommended sampling interval for all conventional heavy-duty coolant/antifreeze and for commercial coolants that meet Cat EC-1 | |
| Cooling System Coolant Sample (Level 1) | Other | 250 hr | Obtain; Every 250 Service Hours | |
| Cooling System Supplemental Coolant Additive (SCA) | Test | 250 hr | 12 mo | Test/Add; Every 250 Service Hours |
| Engine Air Cleaner Element | Clean | 250 hr | 12 mo | Clean/Replace; 8RG1-Up: 12 750 L (3375 US gal) or 250 h or yearly; other S/N: 19 000 L (5000 US gal) or 250 h or yearly |
| Engine Oil Sample | Other | 250 hr | 12 mo | Obtain; Every 250 Service Hours |
| Engine Oil Sample | Test | 250 hr | Every 250 Service Hours - Obtain | |
| Engine Valve Lash | Adjust | 4000 hr | First service — Inspect/Adjust; Initial 250 Service Hours | |
| Engine crankcase oil (S-O-S oil sample) | Test | 250 hr | Table 6 S-O-S Oil Sampling Interval; severe applications may require a more frequent oil sampling interval | |
| Fan Drive Bearing | Lubricate | 250 hr | Every 250 Service Hours | |
| Fuel Injector | Adjust | 4000 hr | First service — Inspect/Adjust; Initial 250 Service Hours | |
| Fuel System Primary Filter | Clean | 250 hr | 12 mo | Every 250 Service Hours; Clean/Inspect/Replace |
| Fuel System Primary Filter | Replace | 1000 hr | Every 250 Service Hours; Clean/Inspect/Replace | |
| Fuel System Secondary Filter | Replace | 1000 hr | 12 mo | Every 250 Service Hours |
| Hoses and Clamps | Inspect | 250 hr | 12 mo | Inspect/Replace; Every 250 Service Hours |
| Magnetic Pickups | Clean | 6000 hr | 72 mo | First service — Initial 250 Service Hours; Clean/Inspect |
| Magnetic Pickups | Inspect | 6000 hr | 72 mo | First service — Initial 250 Service Hours (or at first oil change); Clean/Inspect |
| Radiator | Clean | 250 hr | Every 250 Service Hours | |
| SCA (Supplemental Coolant Additive) concentration | Test | 250 hr | Test the concentration of SCA or submit a coolant sample at 250 hour intervals or at PM Level 1 intervals; check at every oil change or every 250 hours, whichever occurs first | |
| Speed Sensor | Clean | 6000 hr | 72 mo | First service — Initial 250 Service Hours; Clean/Inspect |
| Air Shutoff | Test | 500 hr | Every 500 Service Hours (Prime Power) |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
| Type | Item | Value | Unit | Condition |
|---|---|---|---|---|
| Clearance | Air shutoff damper plunger distance A (minimum) | 18.3 | mm | 0.72 inch; replace plunger if less |
| Clearance | Air shutoff damper plunger distance A (replace if less than) | 18.3 | mm | |
| Clearance | Coolant level below bottom of filler pipe | 13 | mm | no sight gauge |
| Clearance | Coolant level below bottom of filler pipe (engines without recovery tank) | within 13 | mm | 0.5 inch |
| Clearance | Coolant level below filler pipe bottom (no sight gauge) | 13 | mm (0.5 in) | |
| Clearance | Crankshaft end play | .178 to .635 | mm (0.0070 to 0.0250 inch) | measured with dial indicator |
| Clearance | Crankshaft end play after assembly | 0.178 to 0.635 | mm (0.0070 to 0.0250 inch) | after assembly |
| Clearance | Crankshaft vibration damper plunger - minimum wear dimension A | 18.3 | mm (0.72 in) | |
| Clearance | End play at heat sink after assembly | 0.076 to 0.635 | mm (0.0030 to 0.0250 inch) | after assembly |
| Clearance | Gap at 3, 6, 9, 12 o'clock positions | 0.03 to 0.13 | mm (0.001 to 0.005 inch) | between |
| Clearance | Gap between generator and flywheel housing at locations (E), (F), (G), (H) | >0.03 and <0.13 | mm (0.001 inch to 0.005 inch) | more than 0.03 mm and less than 0.13 mm |
| Clearance | Generator forward offset from midpoint of end play | + 0.50 | mm (+ 0.0200 inch) | while generator supported by crane |
| Clearance | Rotor end play | 3.81 to 7.62 | mm (.150 to .300 inch) | approximately |
| Clearance | Shim thickness divisor for number of shims | 0.8 | mm (0.03 inch) | divide Letter L by this value |
| Clearance | Speed/timing sensor sliphead extension | 4 | mm | minimum |
| Clearance | Support deflection during bolt tightening | 0.13 | mm (0.005 inch) | maximum allowed movement |
| Clearance | Water pump leakage considered normal as engine cools | small amount | water pump seal is lubricated by coolant in the cooling system | |
| Gap | Air shutoff damper plunger distance A (replace if less) | 18.3 | mm | |
| Gap | Coolant level below bottom of filler pipe (no sight gauge) | within 13 | mm (.5 inch) | |
| Other | Air cleaner element cleaning limit | six times | replace at least once per year regardless | |
| Other | Air starting motor lubricator oil release rate | two drops per 30 seconds | constant rate of air flow | |
| Other | Alternator belt deflection | 13 to 19 | mm | 110 N (25 lb) of force applied midway between the pulleys; 0.50 to 0.75 inch |
| Other | Altitude capability without derate | 1525 | m | |
| Other | Altitude capability without derate | 800 | m | |
| Other | Caterpillar Fast Acting Cooling System Cleaner concentration | 0.5 | L per 15 L | 1 pint per 4 US gal of cooling system capacity |
| Other | Chlorine content limit for heat exchanger cleaning water | more than 300 | ppm | water containing more than 300 ppm of chlorine should not be used |
| Other | Coolant Sample (Level 1) interval for Cat DEAC | 250 | hours | |
| Other | Cooling system cleaner amount (heavy deposits) | 0.5 | L per 3.8 to 7.6 L capacity | 1 pint per 1 to 2 US gal |
| Other | Cooling system cleaner amount (normal deposits) | 0.5 | L per 15 L capacity | 1 pint per 4 US gal |
| Other | Cooling system cleaner dosage - heavy deposits or plugging | 0.5 L per 3.8 to 7.6 L | (1 pint per 1 to 2 US gal) | |
| Other | Cooling system cleaner dosage - normal | 0.5 L per 15 L | (1 pint per 4 US gal) | |
| Other | Cooling system cleaning duration (heavy deposits) | 90 | minutes | minimum, coolant at least 82 C (180 F) |
| Other | Cooling system cleaning duration (normal deposits) | 30 | minutes | minimum, coolant at least 82 C (180 F) |
| Other | Cooling system fill rate | 19 | L/min | maximum |
| Other | Cooling system fill rate | no faster than 19 | L per minute | 5 US gal per minute to avoid air locks |
| Other | Cooling system fill rate maximum | 19 | L/min | |
| Other | Crankshaft vibration damper max temperature | 93 | °C (200°F) | during operation, infrared thermometer check |
| Other | Crankshaft vibration damper without sampling port - max life | 20000 | hours | |
| Other | Damper fluid viscosity degradation limit | 20 | percent | majority of applications |
| Other | Damper fluid viscosity degradation limit (Hasse & Wrede) | 20 | percent | majority of applications |
| Other | Damper operating hours before rebuild/replace (damper without sampling port) | 20000 | hours | |
| Other | Damper without sampling port - rebuild/replace interval | 20000 | hours | or at major overhaul |
| Other | Exercise under full load | 1 | hour | ToCI quarterly |
| Other | Fast Acting Cooling System Cleaner amount | 0.5 L per 15 L | L | cooling system capacity, normal deposits |
| Other | Fast Acting Cooling System Cleaner amount | 0.5 L per 3.8 to 7.6 L | L | cooling system capacity, heavy deposits |
| Other | Fuel (secondary) filter tightening after gasket contacts base | one full turn | by hand, do not overtighten | |
| Other | Full load test duration | 4 | hours | Once per year |
| Other | Gross Input Torque (TH55-E70) | 12 667 | N•m (9350 lb-ft) | |
| Other | Gross Input Torque (TH55-E90) | 12 677 | N•m (9350 lb-ft) | |
| Other | Hydrosolv cleaner concentration | 2 to 5 | percent | temperatures up to 93 C (200 F) |
| Other | Load bank data recording interval | 15 | minutes | During load bank test |
| Other | Load bank test load level | 80 | % of generator nameplate capacity | 4-hour resistive load bank test |
| Other | Load bank test profile | 2 hours at 50%, 1 hour at 75%, 1 hour at 100% | Annual four (4) hour load bank test | |
| Other | Major Overhaul interval (fuel consumption basis) | 1575000 | L (416,070 US gal) | at approximately 60 percent load factor, 3512B engines |
| Other | Max cooling system fill rate (avoid air locks) | 19 | L per minute (5 US gal per minute) | |
| Other | Max supplemental coolant additive (SCA) concentration - coolant/antifreeze and SCA | 6 | percent | |
| Other | Max supplemental coolant additive (SCA) concentration - water and SCA | 8 | percent | |
| Other | Maximum air pressure at nozzle for cleaning purposes | 205 | kPa | 30 psi |
| Other | New drive belt tension recheck after operation | 30 | minutes | rated rpm |
| Other | Paper air cleaner element reuse limit | up to six | times | replace at least one time per year regardless of number of cleanings |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
| Fluid | Grade | Standard | Ambient | Capacity | Notes |
|---|---|---|---|---|---|
| Coolant | Cat DEAC | Diesel; 3,000 Service Hours or Three Years; annual S·O·SSM Level 2 coolant sampling and analysis | |||
| Coolant | Cat DEAC (Diesel Engine Antifreeze/Coolant) | Acceptable coolant; commercial heavy-duty antifreeze/coolant must meet ASTM D4985 or ASTM D6210 | Conventional heavy-duty coolant/antifreeze. Caterpillar recommends a 1:1 mixture of water and glycol. Do not use a commercial coolant/antifreeze that only meets the ASTM D3306 specification. Do not use Cat SCA at the initial fill when Cat DEAC is used. | ||
| Coolant | Cat DEAC or Cat ELC (Extended Life Coolant) | Caterpillar EC-1 | 50/50 mixture recommended, ELC requires only clean water flush | ||
| Coolant | Cat ELC | Diesel; 12,000 Service Hours or Six Years; add Cat ELC Extender at 6,000 service hours or one half of service life; annual S·O·SSM Level 2 coolant sampling and analysis | |||
| Coolant | Cat ELC (Extended Life Coolant) | Caterpillar EC-1 specification (preferred); also meets ASTM D4985, ASTM D6210, and ASTM D3306 | Service life of 12000 service hours or six years. Premixed ELC provides freeze protection to -37 C (-34 F); ELC Concentrate can be used to lower the freezing point to -52 C (-62 F). An Extender is the only additional maintenance needed at 6000 service hours or one half of the ELC service life. Cat ELC cooling systems can withstand contamination to a maximum of ten percent of conventional heavy-duty coolant/antifreeze and/or SCA. | ||
| Coolant | Cat ELC Extender | Add once; use only with Cat ELC | |||
| Coolant | Cat NGEC | Natural Gas; 16,000 Service Hours or Three Years; use interval that occurs first | |||
| Coolant | Cat SCA (Supplemental Coolant Additive) with water | SCA concentration in a cooling system that uses SCA and water should be six to eight percent by volume; do not exceed the eight percent maximum concentration. If Cat SCA is not used, the commercial SCA must provide a minimum of 2400 mg/L or 2400 ppm (140 grains/US gal) of nitrites in the final coolant mixture when used with water, and a minimum of 1400 mg/L or 1400 ppm (82 grains/US gal) with heavy-duty coolant/antifreeze. | |||
| Coolant | Clean water | Use only clean water to flush the cooling system when Extended Life Coolant (ELC) is drained and replaced | |||
| Coolant | Commercial long life / heavy-duty coolant meeting Caterpillar EC-1 | Caterpillar Engine Coolant Specification -1 (EC-1) | Obtain Level 1 coolant sample | ||
| Coolant | Commercial long life coolant meeting Caterpillar EC-1 | Caterpillar Engine Coolant Specification -1 (EC-1) | |||
| Coolant | DEAC (conventional coolant/antifreeze) | Requires Supplemental Coolant Additive (SCA); do not exceed 6 percent SCA concentration with coolant/antifreeze, 8 percent with water and SCA | |||
| Coolant | Extended Life Coolant (ELC) | Caterpillar ELC | Requires only one addition of Extender; fill no faster than 19 L (5 US gal) per minute | ||
| Coolant | Glycol (ethylene glycol / propylene glycol) | Propylene glycol coolant must meet ASTM D6210-04 | Ethylene glycol: 50 percent = freeze protection -37 C (-34 F), boil protection 106 C (223 F); 60 percent = -52 C (-62 F), 111 C (232 F). Propylene glycol: 50 percent = -32 C (-26 F), 106 C (223 F). Do not use propylene glycol in concentrations that exceed 50 percent; do not use ethylene glycol in concentrations that exceed 60 percent. All Caterpillar diesel engines equipped with air-to-air aftercooling (ATAAC) require a minimum of 30 percent glycol. | ||
| Coolant | Supplemental Coolant Additive (SCA) | Max 6 percent with conventional coolant; max 8 percent with water and SCA | |||
| Engine oil | EPA 2D 89.330-96 (fuel reference, Diesel <6.6 L, density 0,845-0,850 kg/L a 15 °C) | Reference condition only, not a lubricant recommendation | |||
| Engine oil | Cat DEO (Diesel Engine Oil) 10W-30 and 15W-40 | Cat ECF-1 (exceeds); API CI-4, API CI-4 PLUS, API CH-4, API CG-4, API CF (Cat DEO SAE 15W-40) | Caterpillar oils are used to fill diesel engines at the factory. Non-Caterpillar commercial oils are second choice oils. Do not use API CF-4 oils in Caterpillar diesel engines. Do not use single grade API CF oils or multigrade API CF oils in 3500 Series, C175 Series and smaller DI diesel engines. | ||
| Engine oil | Cat NGEO | Natural Gas | |||
| Engine oil | Commercial oils (DI engines) | Cat ECF-1 required; API CG-4 multigrade acceptable; API CH-4, API CI-4 and API CI-4 PLUS acceptable only if the requirements of Cat ECF-1 are met; do not use API CF-4 oils | Minimum TBN must be 10 times the fuel sulfur level (ASTM D2896); minimum TBN of the oil is 5 regardless of a low fuel sulfur level. API CG-4 oils: do not exceed the standard oil drain interval. | ||
| Engine oil | Commercial oils (PC engines) | Cat ECF-1; API CH-4, API CI-4, API CI-4 PLUS (if Cat ECF-1 requirements met); API CG-4 multigrade; API CF-4 multigrade; API CF | Minimum TBN of the oil that is used in PC engines must be 20 times the fuel sulfur level; minimum TBN of new oil is five. Change the oil when the TBN deteriorates to 50 percent of the original TBN. | ||
| Engine oil | Re-refined base stock oils | Acceptable if they meet the performance requirements specified by Caterpillar; filtering is inadequate for producing high quality re-refined base stock oils. | |||
| Engine oil | Synthetic base stock oils | Acceptable if they meet the performance requirements specified for the engine compartment. Caterpillar does not recommend the automatic extension of oil drain intervals for any type of oil. | |||
| Engine oil | air tool oil | below 0°C | Air starting motor lubricator; temperatures below 0 C (32 F) | ||
| Engine oil | low sulfated ash oil | Required for U.S. EPA Tier 4 Final, EU Stage IV engines. | |||
| Engine oil | meeting manufacturer's specs | Add crankcase oil (grade meeting manufacturer's specs) to correct level (SCI) | |||
| Engine oil | Cat Arctic DEO SYN SAE 0W-30 | -40°C to 30°C | Engine Crankcase; Industrial Engines | ||
| Engine oil | SAE 0W-20 | -40°C to 10°C | Table 1 Lubricant Viscosities for Ambient Temperatures (DI diesel engines) | ||
| Engine oil | SAE 0W-30 | -40°C to 30°C | Table 1 Lubricant Viscosities for Ambient Temperatures (DI diesel engines) | ||
| Engine oil | SAE 0W-40 | -40°C to 40°C | Table 1 Lubricant Viscosities for Ambient Temperatures (DI diesel engines) | ||
| Engine oil | Cat DEO SYN SAE 5W-40 | -30°C to 50°C | Engine Crankcase; Industrial Engines |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Tools: crane, dial indicator, shims, torque wrench
Tools: shims, torque wrench
⚠ Replace belts for multiple groove pulleys in matched sets.
Tools: Belt tension gauge (110 N / 25 lb force)
⚠ Slippage of loose belts can reduce efficiency of driven components
⚠ Too tight belts place unnecessary stress on components
⚠ Ensure engine cannot be started during maintenance
⚠ Allow engine to cool before measuring/adjusting valve lash
⚠ Damage to cylinder block can result if timing pins are not removed before turning crankshaft
Tools: torque wrench, shims
⚠ Do not start the engine during the test
⚠ Ensure the engine control is in the OFF position
⚠ Check the wiring for the air shutoff switches, and for the solenoids
⚠ High voltage can cause electrocution. Discharge instrument leads and generator windings.
Tools: 300-8648 Insulation Testing Gp
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
| Voltage | Phase | Connection | Leads | Notes |
|---|---|---|---|---|
| 480V | 3 | 12 lead reconnectable | Generator end is 12 lead reconnectable: Yes | |
| 600 | 3 | wye (10 wire) | 10 wire | Brushless SR4B generator; 0.7 pf; voltage regulator optional; space heater and 100 ohm platinum temperature detectors standard |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
| Part # | Description | Category |
|---|---|---|
| 8N6309 | Air filter outer | Air filter |
| 105-amp | Alternator | Alternator |
| 141-7116 | V-belt | Belt |
| 1R-0755 | High Efficiency Fuel Filter | Filter |
| 1U-5490 | Hydrosolv 4165 liquid cleaner, 19 L (5 US gallon) | Fluid |
| 1U-5492 | Hydrosolv 100 Liquid Cleaner, 19 L (5 US gal) | Fluid |
| 1U-8804 | Hydrosolv 100 Liquid Cleaner, 4 L (1 US gal) | Fluid |
| 1U-8812 | Hydrosolv 4165 Liquid Cleaner, 4 L (1 US gal) | Fluid |
| 5N-5561 | Silicone Lubricant | Fluid |
| 8T-5571 | Hydrosolv 100 - 208 L (55 US gallon) | Fluid |
| 8T-7570 | Hydrosolv 4165 - 208 L (55 US gallon) | Fluid |
| 133-5673 | Fuel/Water Separator | Fuel filter |
| 1R-0749 | Fuel Secondary - ADV | Fuel filter |
| 1R0750 | Filter fuel | Fuel filter |
| 1R0755 | Filter fuel | Fuel filter |
| 1R0756 | Filter fuel | Fuel filter |
| 3S3875 | Filter fuel | Fuel filter |
| 10R9951 | Head Gaskets | Gasket |
| 1744947 | Aftercooler and Lines Gaskets | Gasket |
| 2322507 | Manifold Gaskets | Gasket |
| 2322521 | Turbocharger Gaskets | Gasket |
| 2342795 | Injector Seals/Gaskets | Gasket |
| 1R0741 | Filter hydraulic | Hydraulic filter |
| 2322522 | Reman Injectors | Injector |
| 1R-0716 | Engine Oil | Oil filter |
| 1R-1808 | Engine Oil - ADV | Oil filter |
| 1R0719 | Filter oil | Oil filter |
| 1R0726 | Filter oil | Oil filter |
| 138-8440 | Component cleaner | Service part / kit |
| 1440725 | Connecting rod | Service part / kit |
| 169-8373 | Fluid Sampling Bottle | Service part / kit |
| 174-6854 | Hydrosolv 100 liquid cleaner, 19 L (5 US gallon) | Service part / kit |
| 1743191 | Reman Cylinder Heads | Service part / kit |
| 249-0437 | Oxidation Catalyst Assembly - Round | Service part / kit |
| 4C-9301 | Coolant Conditioner Test Kit | Service part / kit |
| 5P-3413 | Pipe Sealant | Service part / kit |
| 8T-5296 | Coolant Conditioner Test Kit | Service part / kit |
| 9S-3263 | Thread lock | Service part / kit |
| 9S-4030 | Thread lock | Service part / kit |
| PEHJ0271 | Cat® Emissions Upgrade Kits for Select 3500 Marine Engines | Service part / kit |
| PEHJ0287 | Cat® Performance Upgrade Kits for Select 3508, 3512, and 3516 Marine Engines | Service part / kit |
| 1U-5718 | Vacuum Pump | Pump |
| 222-5152 | Water pump repair kit | Pump |
| 9S-8140 | Pressurizing Pump | Pump |
| 113-8432 | Front seal | Seal |
| 4W3864 | Water pump seal | Seal |
| 9G8010 | Switch | Sensor |
| ESD5526 | Speed Controller | Speed controller |
| 248-5513 | Thermostat | Thermostat |
Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.
Parts listed by aftermarket suppliers as fitting this engine — leads compiled from supplier catalogs; verify the exact part for your serial number.
Cross-referenced via Donaldson + OEM/engine-maker interchange — options to verify against your serial number, not confirmed for every exact variant.
Other equipment known to use this engine, via filter-application cross-reference — useful for sourcing parts even when your exact machine isn't listed elsewhere on this page.
The Caterpillar 3512B engine has an oil capacity of 644.0 liters.
The Caterpillar 3512B has a displacement of 51.8 liters with 12 cylinders.
The Caterpillar 3512B powers 4 generator set(s), including Caterpillar 3412, Caterpillar 3508, Caterpillar 3512, Caterpillar PM 1360 RENTAL.
The Caterpillar 3512B uses oil filter part numbers Caterpillar 3890434, Donaldson P551808, Wix 57792.
The Caterpillar 3512B uses fuel filter part numbers Caterpillar 1R0763, Caterpillar 3890433, Caterpillar 1110716.
The Caterpillar 3512B uses air filter part numbers Caterpillar 1W3636, Caterpillar 1327171, Donaldson P117781.
The Caterpillar 3512B oil change interval is every 1000 hours.
A commonly reported issue on generators using the Caterpillar 3512B is: Warning tag attached to the engine start switch or controls. Fix: Do NOT start the engine or move the controls. Consult with the person that attached the warning tag before starting..