The Perkins 1104C-TAG1 is a 3.99 L 4-cylinder turbocharged engine rated at 1800 rpm, producing up to 85 kW. It powers generator sets from Caterpillar and FG Wilson, including the XQ80P2 and P88-2. It holds 7.1 L (1.9 gal) of oil and 25.9 L (6.8 gal) of coolant.
Also known as: 1104C-TAG1, Perkins 1104C-TAG1
Part of the Perkins 1104C engine family — 16 variants share parts & fitment.
| Oil capacity | 7.1 L |
|---|---|
| Coolant capacity | 25.9 L |
| Displacement | 3.99 L |
| Cylinders | 4 |
| Aspiration | Turbocharged |
| Rated speed | 1800 rpm |
| Gross power | 85 kW |
Shared across brands: Caterpillar, FG Wilson
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Oil | API CF-4 | 8.5 U.S. Gal | — |
Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.
| Part # | Description | Category |
|---|---|---|
| P80-3 | Air filter housing | air_filter |
| P80-4 | Air filter element, 5 micron | air_filter |
| P80-10 | Belt, non-drive end | belt |
| P80-9 | Belt, drive end | belt |
| P80-8 | Coolant filter element, 5 micron | coolant_filter |
| P80-7 | Fuel filter housing | fuel_filter |
| P80-5 | Oil filter housing | oil_filter |
| P80-6 | Oil filter element, 5 micron | oil_filter |
| A051C255 | Rectifier Service Kit | other_service |
| A051C257 | Rectifier Service Kit | other_service |
| A051C282 | Rectifier Service Kit | other_service |
| A051C285 | Bearing Kit Frame R, S, & T | other_service |
| A051C291 | Bearing Kit Frame X, Y, & Z | other_service |
| P80-1 | Hatch cover, drive end | other_service |
| P80-2 | Hatch cover, non-drive end | other_service |
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 Perkins 1104C-TAG1 engine has an oil capacity of 7.1 liters.
The Perkins 1104C-TAG1 has a displacement of 3.99 liters with 4 cylinders.
The Perkins 1104C-TAG1 powers 2 generator set(s), including Caterpillar XQ80P2, FG Wilson P88-2.