The Caterpillar C15 ATAAC is a 15.2 L 6-cylinder air-to-air aftercooled engine rated at 1500 rpm, producing up to 302 kW. It powers generator sets from Caterpillar, including the DM8162, DM8164 and DM8165. It holds 60 L (15.9 gal) of oil and 57.8 L (15.3 gal) of coolant.
Also known as: Caterpillar C15 ATAAC
Part of the Caterpillar C15 engine family — 2 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 | 60.0 L |
|---|---|
| Coolant capacity | 57.8 L |
| Displacement | 15.2 L |
| Cylinders | 6 |
| Aspiration | Air-to-Air Aftercooled |
| Rated speed | 1500 rpm |
| Gross power | 302 kW |
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | 46822 | 1250 hr | Amazon eBay $218.50 FridayParts $132.57 | ||
| Fuel filter | 33674 | 1250 hr | Amazon eBay $50.97 PartsGeek $19.97 KuduParts $147.00 | ||
| Oil filter | 2P4005 | 1250 hr | Amazon eBay $32.99 PartsGeek $23.97 KuduParts $39.00 | ||
| Battery | — | 1250 hr | |||
| Belt | — | 1250 hr | |||
| Coolant | 57.8 | — | 1250 hr | ||
| Oil | 60.0 L | — | |||
| Spark plug | — |
Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.
| 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. |
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 |
|---|---|---|
| LEDH4624-01 | Cat ADEM 4 Controller | other_service |
Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.
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 C15 ATAAC engine has an oil capacity of 60.0 liters.
The Caterpillar C15 ATAAC has a displacement of 15.2 liters with 6 cylinders.
The Caterpillar C15 ATAAC powers 10 generator set(s), including Caterpillar C15 ATAAC, Caterpillar DM8162, Caterpillar DM8164, Caterpillar DM8165, Caterpillar DM8478.
The Caterpillar C15 ATAAC uses oil filter part numbers Caterpillar 2P4005, Donaldson P554005, Wix 51792.
The Caterpillar C15 ATAAC uses fuel filter part numbers Donaldson P551319, Wix 33674.
The Caterpillar C15 ATAAC uses air filter part numbers Donaldson P780006, Donaldson P781351, Wix 46822.