Caterpillar C-15 ATAAC Engine
The Caterpillar C-15 ATAAC is a 15.2 L 6-cylinder ataac engine rated at 1800 rpm, producing up to 403 kW. It powers generator sets from Caterpillar, including the DM8162, DM8164, DM8478 and DM8490. It holds 60 L (15.9 gal) of oil and 57.8 L (15.3 gal) of coolant.
Also known as: Caterpillar C-15 ATAAC
Part of the Caterpillar C15 engine family — 5 variants share parts & fitment.
Service parts for the C-15 ATAAC
The cheapest captured merchant offer per filter — see the full cross-reference below for every OEM/aftermarket option.
Air intake
1 requiredP780006Air filterfind
Fuel system
1 requiredP551319Fuel filterfind
Prices captured from merchant listings; some links are affiliate links. Verify against your serial number before ordering.
Engine specifications
| Oil capacity | 60.0 L |
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| Coolant capacity | 57.8 L |
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| Displacement | 15.2 L |
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| Cylinders | 6 |
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| Aspiration | ATAAC |
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| Rated speed | 1800 rpm |
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| Gross power | 403 kW |
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Maintenance schedule
Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.
Recommended fluids
| Fluid | Grade | Standard | Ambient | Capacity | Notes |
|---|
| Coolant | SCAC cooling / jacket water | | | | Generator temperature rise based on a 40 degree C ambient per NEMA MG1-32. |
| Engine oil | Lubricating oil | | | 675.0 L | Sump refill with filter; integral lube oil cooler, gear type lube oil pump |
| Fuel | 35 API gravity | | | | LHV of 42 780 kJ/kg (18,390 Btu/lb) at 29 C (85 F), weighing 838.9 g/liter (7.001 lbs/U.S. gal.) |
| Fuel | No. 2 diesel fuel, 35º API gravity | LHV 42 780 kJ/kg (18,390 Btu/lb) | | | Weighing 838.9 g/liter (7.001 lbs/U.S. gal.), used at 29º C (85º F). Consult Cat dealer for Low Sulfur fuel and Biodiesel capability. |
| Other | Sullair AWF Compressor Fluid | | | | Improved hot and cold weather lubrication; longer compressor fluid life; extended air end warranty when continuously serviced at recommended intervals with Sullair AWF Compressor Fluid and filters. |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
Parts cataloged across the Caterpillar C15 family
26| Part # | Description | Category |
|---|
| 95-amp | Alternator, 95-amp | Alternator |
| 356-1428 | Fuel Filter | Fuel filter |
| 588-2631 | Water Separator and Fuel Filter | Fuel filter |
| MXS00001-Up | Fuel Filter | Fuel filter |
| 10R-9925 | Oil Filter | Oil filter |
| 588-1049 | Engine Oil Filter | Oil filter |
| BXS00001-Up | Oil Filter | Oil filter |
| 10R-9923 | Exhaust Manifold Stud | Service part / kit |
| 173-6532 | Radio 12V AM/FM Deluxe | Service part / kit |
| 175-6530 | Radio 12V AM/FM | Service part / kit |
| 214-7318 | Tool Kit and Box | Service part / kit |
| 246-0789 | Dump Body - Optional 11.3 m³ (14.8 yd³) | Service part / kit |
| 246-0805 | Belly Guards | Service part / kit |
| 246-0809 | Ejector Body - Optional 15.2 m³ (19.9 yd³) | Service part / kit |
| 249-4899 | Standard Bucket* | Service part / kit |
| 588-0941 | Quick Disconnect Fittings | Service part / kit |
| 588-3621 | Variable Fan Hub | Service part / kit |
| 884949 | drift | Service part / kit |
| AEHQ5645-02 | Parts book, CD rom | Service part / kit |
| AEHQ5648-03 | 735 Articulated Truck | Service part / kit |
| AEHQ5679-02 | Parts book, paper | Service part / kit |
| LEBE0009-00 | Cat NOx Reduction System and Clean Emissions Module (DOC+DPF+CRS) | Service part / kit |
| LEDH4624-01 | Cat ADEM 4 Controller | Service part / kit |
| MCB3067460 | Piston | Service part / kit |
| AN500T0143 | STARTER MOTOR | Starter |
| AN500T0144 | STARTER MOTOR - w/Drive | Starter |
Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.
Filters for this engine
- Air filter: Donaldson P780006 Donaldson P781351 Wix 46822
- Fuel filter: Donaldson P551319 Wix 33674 Baldwin BF7587
- Oil filter: Caterpillar 2P4005 Donaldson P554005 Wix 51792 Ac Delco PF879L
Cross-referenced via Donaldson + OEM/engine-maker interchange — options to verify against your serial number, not confirmed for every exact variant.
Also used in
12- Caterpillar CB22 — Compactor
- Caterpillar CB24 — Compactor
- Caterpillar CB32 — Compactor
- Caterpillar CB34 — Compactor
- Caterpillar CB34XW — Compactor
- Caterpillar CC24 — Compactor
- Caterpillar MD6290 — Drilling Equipment
- Freightliner ARGOSY — Truck
- Freightliner CENTURY CLASS — Truck
- Freightliner COLUMBIA — Truck
- New Holland FX60 — Harvester
- Wirtgen W 2000 — Milling Equipment
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.
Common questions
What is the oil capacity of the Caterpillar C-15 ATAAC?
The Caterpillar C-15 ATAAC engine has an oil capacity of 60.0 liters.
What is the displacement of the Caterpillar C-15 ATAAC?
The Caterpillar C-15 ATAAC has a displacement of 15.2 liters with 6 cylinders.
Which generators use the Caterpillar C-15 ATAAC engine?
The Caterpillar C-15 ATAAC powers 6 generator set(s), including Caterpillar DM8162, Caterpillar DM8164, Caterpillar DM8478, Caterpillar DM8490, Caterpillar DM8491.
What oil filter does the Caterpillar C-15 ATAAC use?
The Caterpillar C-15 ATAAC uses oil filter part numbers Caterpillar 2P4005, Donaldson P554005, Wix 51792.
What fuel filter does the Caterpillar C-15 ATAAC use?
The Caterpillar C-15 ATAAC uses fuel filter part numbers Donaldson P551319, Wix 33674, Baldwin BF7587.
What air filter does the Caterpillar C-15 ATAAC use?
The Caterpillar C-15 ATAAC uses air filter part numbers Donaldson P780006, Donaldson P781351, Wix 46822.