The Caterpillar 3176C is a 10.3 L 6-cylinder ataac engine rated at 2100 rpm, producing up to 192 kW. It powers generator sets from Caterpillar, including the 3176. It holds 28.5 L (7.5 gal) of oil and 10.2 L (2.7 gal) of coolant.
Also known as: Caterpillar 3176C
Part of the Caterpillar 3176C engine family — 2 variants share parts & fitment.
| Oil capacity | 28.5 L |
|---|---|
| Coolant capacity | 10.2 L |
| Displacement | 10.3 L |
| Cylinders | 6 |
| Aspiration | ATAAC |
| Rated speed | 2100 rpm |
| Gross power | 192 kW |
| Item | Action | Hours | Months | Notes |
|---|---|---|---|---|
| Engine oil (S-O-S oil sample) | Test | 125 hr | Severe service occurs at high loads, in high temperatures, and in dusty conditions | |
| 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 | |
| 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 | |
| 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 | |
| Coolant (S-O-S coolant analysis Level 2) | Test | 500 hr | 12 mo | First service — For new systems, refilled systems, and converted systems that use Cat ELC or Cat DEAC; also every year; use the interval that occurs first |
| oil | Change | 500 hr | 3000 Series service intervals increased to 500 hours as standard (3013C, 3024C, 3054, 3056) | |
| Cat ELC Extender addition (cooling system) | Other | 6000 hr | Treat the cooling system with Cat ELC Extender at 6000 hours or one half of the coolant service life | |
| Coolant (Cat ELC) | Change | 12000 hr | 12000 service hours or six years; use the interval that occurs first | |
| minor overhaul | Other | 20000 hr | 3600 engines designed to run 20 000 hours between minor overhauls using No. 2 fuel | |
| major overhaul | Other | 40000 hr | 3600 engines designed to run 40 000 hours between major overhauls using No. 2 fuel | |
| cylinder liners and pistons | Other | 80000 hr | 3600 cylinder liners and pistons designed for 80 000 hours using No. 2 fuel | |
| Coolant (S-O-S coolant analysis Level 1 and Level 2) | Test | 12 mo | Cat DEAC - Yearly |
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 |
|---|---|---|---|---|
| Pressure | Unit injector fuel injection pressure | 1240 | bar (18 000 psi) |
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 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 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 | 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. | ||
| 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 | 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 | ||
| Engine oil | SAE 5W-30 | -30°C to 30°C | Table 1 Lubricant Viscosities for Ambient Temperatures (DI diesel engines) | ||
| Engine oil | SAE 5W-40 | -30°C to 50°C | Table 1 Lubricant Viscosities for Ambient Temperatures (DI diesel engines) | ||
| Engine oil | Cat DEO SAE 10W-30 | -18°C to 40°C | Engine Crankcase; Industrial Engines | ||
| Engine oil | SAE 10W-30 | -18°C to 40°C | Table 1 Lubricant Viscosities for Ambient Temperatures (DI diesel engines); SAE 10W-30 is the preferred viscosity grade for the 3116, 3126, C7, C-9 and C9 diesel engines between -18 C (0 F) and 40 C (104 F) | ||
| Engine oil | SAE 10W-40 | -18°C to 50°C | Table 1 Lubricant Viscosities for Ambient Temperatures (DI diesel engines) | ||
| Engine oil | Cat DEO SAE 15W-40 | -9°C to 50°C | Engine Crankcase; Industrial Engines | ||
| Engine oil | SAE 15W-40 | -9°C to 50°C | Table 1 Lubricant Viscosities for Ambient Temperatures (DI diesel engines) | ||
| Engine oil | Cat SAEO SAE 30 | API CF-4 category | 0°C to 40°C | Table 2 - 3116 and 3126 Marine Engines with mechanical unit injection; factory fill has API CF-4 category and viscosity grade of SAE 30 | |
| Engine oil | SAE 30 | 0°C to 40°C | Table 3 Lubricant Viscosities for Ambient Temperatures - PC engines only | ||
| Engine oil | Cat SAEO SAE 40 | API CF-4 category | 5°C to 50°C | Table 2 - 3116 and 3126 Marine Engines with mechanical unit injection. Caterpillar does not recommend the use of multigrade oils in the 3116 and 3126 Marine Diesel Engines that use mechanical unit injection. | |
| Engine oil | SAE 40 | 5°C to 50°C | Table 3 Lubricant Viscosities for Ambient Temperatures - PC engines only | ||
| Fuel | Biodiesel blends | Caterpillar biodiesel specification, ASTM D6751, or EN 14214 | May be blended in amounts up to a maximum of 30 percent (models C6.6, C7, C9, C11, C13, C15, C18, C27, C32, 3114, 3116, 3126, 3176, 3196, 3208, 3306, C-9, C-10, C-12, 3406, C-15, C-16, C-18, 3456, 3408, 3412, 3500 Series, C175 Series, 3600 Series, C280 Series, CM20, CM25 and CM32); for 3003 through 3034, 3046, 3054, 3056, 3064, and 3066 engines, maximum ratio of 5% biodiesel to 95% acceptable diesel fuel. Caterpillar recommends a maximum of one year for fuel storage. |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
⚠ Do not leave an empty SCA maintenance element on a system that is filled with ELC. The element housing may corrode and leak causing an engine failure.
⚠ Improper or incomplete rinsing of the cooling system can result in damage to copper and other metal components.
⚠ The cooling system cleaner must be thoroughly flushed from the cooling system. Cooling system cleaner that is left in the system will contaminate the coolant. The cleaner may also corrode the cooling system.
Tools: Caterpillar cleaner for cooling systems, 5P-3413 Pipe Sealant, Suitable containers to collect fluids
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 |
|---|---|---|
| 229-1676 | Engine Air Intake Precleaner | Air filter |
| RE558676 | ALTERNATOR | Alternator |
| 227-4702 | Standard Bucket (5.6 m3) | Bucket |
| 227-4704 | Ejector Bucket (5.9 m3) | Bucket |
| 1R-0755 | High Efficiency Fuel Filter | Filter |
| 1R-0749 | Fuel Secondary - ADV | Fuel filter |
| 1R-0750 | High Efficiency Fuel Filter | Fuel filter |
| 1R-0751 | High Efficiency Fuel Filter | Fuel filter |
| 1R-0756 | High Efficiency Fuel Filter | Fuel filter |
| 1R-0766 | High Efficiency Fuel Filter | Fuel filter |
| M-4626474 | Gasket Set - Rear Structure | Gasket |
| M-4652364 | Gasket Set - Oil Cooler & Lines | Gasket |
| 9T0973 | Filter hydraulic/transmission | Hydraulic filter |
| AEHQ5438-01 | Replaces AEHQ5438 | Service part / kit |
| AEHQ5487-02 | Replaces AEHQ5487-01 | Service part / kit |
| AEHQ5574-01 | Replaces AEHQ5574 | Service part / kit |
| PEHP7069-01 | Reman Water Pump | Water pump |
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.
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 3176C engine has an oil capacity of 28.5 liters.
The Caterpillar 3176C has a displacement of 10.3 liters with 6 cylinders.
The Caterpillar 3176C powers 1 generator set(s), including Caterpillar 3176.