Looking for 788876 NorthStar Pump Parts List? You’re in the right place!
The 788876 Pump parts are specifically designed for use in the NorthStar 20-gallon air compressor 25653 and 25654 models. Whether you need a comprehensive parts list for the 788876 Pump (NorthStar 20-gallon air compressors – 25653 parts, 25654 parts) or an exploded view detailing the exact locations of each part within the pump, you’ll find everything you need right here.

NorthStar 788876 Pump Parts List
| Ref No | Description | Part No | Qty | Kit # |
|---|---|---|---|---|
| 1 | Cylinder head | 788877 | 2 | N/A |
| 2 | Allen bolt set | N/A | 8 | N/A |
| 3 | In.& Ex. valve assembly | N/A | 2 | N/A |
| 4 | Double head screw set | N/A | 8 | N/A |
| 5 | Cylinder | N/A | 2 | N/A |
| 6 | Cylinder gasket | N/A | 2 | Kit # 1 & Kit # 2 |
| 7 | Piston ring set | N/A | 2 | Kit #1 |
| 8 | Piston set | N/A | 2 | N/A |
| 9 | Rod set | N/A | 2 | N/A |
| 10 | Crankcase | N/A | 1 | N/A |
| 11 | Oil draining plug | 788879 | 1 | N/A |
| 12 | Oil sight gauge set | 788880 | 1 | N/A |
| 13 | Oil filling plug set | 788881 | 1 | N/A |
| 14 | Bearing | N/A | 1 | N/A |
| 15 | Crankshaft & balancer | N/A | 1 | N/A |
| 16 | Bearing | N/A | 1 | N/A |
| 17 | Rear bearing seat gasket | N/A | 1 | Kit #2 |
| 18 | Oil seal | N/A | 1 | N/A |
| 19 | Rear bearing seat | N/A | 1 | N/A |
| 20 | Breathing cover | 788882 | 1 | N/A |
| 21 | Hexagon bolt | N/A | 4 | N/A |
| 22 | Pulley | N/A | 1 | N/A |
| 23 | Plate washer | N/A | 1 | N/A |
| 24 | Hexagon bolt set | N/A | 1 | N/A |
| 25 | Exhaust elbow | N/A | 1 | N/A |
| 26 | Exhaust three way pipe | N/A | 1 | N/A |
| 27 | Exhaust tube set | N/A | 1 | N/A |
| 28 | Air filter set (2 pcs) | 788883 | 1 | N/A |
| 29 | Filter element | N/A | 2 | N/A |
| 30 | Cylinder gasket | N/A | 2 | Kit # 2 & Kit # 3 |
| 31 | In. & Ex. Valve seat | N/A | 2 | Kit #3 |
| 32 | Valve seat gasket | N/A | 2 | Kit # 2 & Kit # 3 |
| * | Wing nut, air filter | 789523 | 2 | N/A |
Kit #1 Piston Ring Kit- Part # 788885
| Ref No | Description | Qty |
|---|---|---|
| 6 | Cylinder gasket | 2 |
| 7 | Piston ring set | 2 |
Kit #2 Gasket Kit- Part # 788884
| Ref No | Description | Qty |
|---|---|---|
| 6 | Cylinder gasket | 2 |
| 17 | Rear bearing seat gasket | 1 |
| 30 | Cylinder gasket | 2 |
| 32 | Valve seat gasket | 2 |
Kit # 3 Valve Kit – Part # 788878
| Ref No | Description | Qty |
|---|---|---|
| 30 | Cylinder gasket | 2 |
| 31 | In. & Ex. Valve seat | 2 |
| 32 | Valve seat gasket | 2 |





