The Perkins 403A-11G is a 1.13 L 3-cylinder naturally aspirated engine rated at 1500 rpm. It powers generator sets from Perkins, including the WPSP-10S. It holds 4.9 L (1.3 gal) of oil.
Also known as: Perkins 403A-11G
Part of the Perkins 403A engine family — 4 variants share parts & fitment.
| Oil capacity | 4.9 L |
|---|---|
| Displacement | 1.131 L |
| Cylinders | 3 |
| Aspiration | Naturally aspirated |
| Rated speed | 1500 rpm |
Compiled from service & troubleshooting documentation across every generator set that uses the Perkins 403A-11G.
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | — | ||||
| Fuel filter | — | ||||
| Oil filter | — | ||||
| Battery | — | ||||
| Belt | — | ||||
| Coolant | — | ||||
| Coolant filter | — | ||||
| Oil | — | ||||
| Spark plug | — |
Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.
| Part # | Description | Category |
|---|---|---|
| 403A-11G | Perkins 403A-11G Engine | engine |
| 057-287 | DSE6110 MKIII & DSE6110 MKIII Configuration Software Manual | other_service |
| 057-289 | ISSUE: 2 | other_service |
Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.
Parts listed by aftermarket suppliers as fitting this engine — leads compiled from supplier catalogs; verify the exact part for your serial number.
The Perkins 403A-11G engine has an oil capacity of 4.9 liters.
The Perkins 403A-11G has a displacement of 1.131 liters with 3 cylinders.
The Perkins 403A-11G powers 1 generator set(s), including Perkins WPSP-10S.
A commonly reported issue on generators using the Perkins 403A-11G is: SPN=131166 , FMI=8, OC=127.