The Caterpillar C 6.6 acert T3 is a 6.6 L 6-cylinder engine rated at 1800 rpm, producing up to 129 kW. It powers generator sets from Atlas Copco, including the XAHS 237 and XAMS 287. It holds 15 L (15.9 US qt) of oil and 30 L (7.9 gal) of coolant.
Also known as: Caterpillar C 6.6 acert T3
Part of the Caterpillar C6.6 engine family — 6 variants share parts & fitment.
| Oil capacity | 15 L (15.9 US qt) |
|---|---|
| Coolant capacity | 30.0 L |
| Displacement | 6.6 L |
| Cylinders | 6 |
| Rated speed | 1800 rpm |
| Gross power | 129 kW |
| Part # | Description | Category |
|---|---|---|
| S200-0369 | Maintenance-free battery, 1000 CCA (2) | Battery |
| S200-0632 | Starting and charging system, 24V | Battery |
| S200-1156 | Keyless battery disconnect switch | Battery |
| S200-0863 | Keyless ignition stop/start switch | Ignition |
| S200-1038 | Starting aid, thermal | Ignition |
| S200-0578 | Directional signals, front & rear | Light |
| S200-0758 | Halogen work lights, front & rear | Light |
| S200-0957 | Roading lights | Light |
| 289-2630 | 5×5 fl ood, work lamps | Lighting |
| 389024500-C | Coolant heater, 1500W, 120V | Service part / kit |
| AEHQ5826-01 | Replaces AEHQ5826-01 | Service part / kit |
| AEHQ5982-01 | R | Service part / kit |
| INT9-101F | Replaces any core plug | Service part / kit |
| INT9-102F | Replaces any core plug | Service part / kit |
| NRG22-10-RC | Battery charger, 120/208-240V, 6/3A | Service part / kit |
| PA50 | Winch Model PA50 | Service part / kit |
| TPL-489-C | OPERATING & MAINTENANCE OF D175 | Service part / kit |
| JPR-HDS170 | PUMP ASSY | Pump |
Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.
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 C 6.6 acert T3 engine has an oil capacity of 15 L (15.9 US qt).
The Caterpillar C 6.6 acert T3 has a displacement of 6.6 liters with 6 cylinders.
The Caterpillar C 6.6 acert T3 powers 2 generator set(s), including Atlas Copco XAHS 237, Atlas Copco XAMS 287.