The Caterpillar C9 ATAAC is a 8.8 L air-to-air aftercooled engine rated at 1800 rpm. It powers generator sets from Caterpillar. It holds 39 L (10.3 gal) of oil and 46.7 L (12.3 gal) of coolant.
Part of the Caterpillar C9 engine family — 3 variants share parts & fitment.
| Oil capacity | 39.0 L |
|---|---|
| Coolant capacity | 46.7 L |
| Displacement | 8.8 L |
| Aspiration | Air-to-air aftercooled |
| Rated speed | 1800 rpm |
| Part # | Description | Category |
|---|---|---|
| 1W7848 | GENERATOR NUMBER | other_service |
| 888-983-7847 | [No description provided] | other_service |
| 8889837647 | LOCK-RETAINER 5 weir | other_service |
| g00704000 | Fire Prevention and Explosion Prevention | other_service |
| g00771448 | Electrical System - Grounding Practices | other_service |
| g01063102 | Caterpillar Messenger Display | other_service |
| g01129459 | Illustration 18 (1) Serial Number Plate | other_service |
| g01129463 | Illustration 19 (2) Information Plate | other_service |
| i00910470 | Engine Starting | other_service |
| i00911989 | Before Starting Engine | other_service |
| i01359666 | Crushing Prevention and Cutting Prevention | other_service |
| i01372247 | Mounting and Dismounting | other_service |
| i01372254 | Oils | other_service |
| i01463253 | Diagnostic Lamp | other_service |
| i01563743 | Engine Electronics | other_service |
| i01563934 | Self-Diagnostics | other_service |
| i02238548 | Diagnostic Flash Code Retrieval | other_service |
| i02240570 | Plate Locations and Film Locations | other_service |
| i02246834 | Safety Messages | other_service |
| i02276735 | Welding on Engines with Electronic Controls | other_service |
| i02469632 | Engine Stopping | other_service |
| i02472408 | Monitoring System (If Equipped) | other_service |
| i07966018 | Important Safety Information | other_service |
| g00780729 | Illustration 1(1) Valve cover(2) Hydraulic Pump | pump |
Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.
The Caterpillar C9 ATAAC engine has an oil capacity of 39.0 liters.
The Caterpillar C9 ATAAC has a displacement of 8.8 liters.
The Caterpillar C9 ATAAC powers 1 generator set(s), including Caterpillar C9 ATAAC.