81115AS: PISTON,INTERNAL COMBUSTION ENGIN.
PISTON,INTERNAL COMBUSTION ENGIN. Key specifications include diameter: 4.375 INCHES NOMINAL IN, material: ALUMINUM, head_style: DISH, oil_groove: INCLUDED, skirt_type: SOLID, carbon_groove: NOT INCLUDED. This part is cataloged in the U.S.
Government catalog under NSN 2815-00-090-5639, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.
Verify compatibility with your specific system configuration before ordering.
| diameter | 4.375 INCHES NOMINAL IN |
| material | ALUMINUM |
| head_style | DISH |
| oil_groove | INCLUDED |
| skirt_type | SOLID |
| carbon_groove | NOT INCLUDED |
| overall_height | 6.844 INCHES NOMINAL IN |
| surface_finish | FINISHED |
| oil_passage_type | HOLE THIRD RING |
| pin_hole_bushing | NOT INCLUDED |
| pinhole_diameter | 1.6244 INCHES MINIMUM AND 1.6248 INCHES MAXIMUM IN |
| unable_to_decode | UNABLE TO DECODE |
| NSN | 2815-00-090-5639 |
| OVERALL HEIGHT | 6.844 INCHES NOMINAL IN |
| FSC APPLICATION DATA | DIESEL ENGINE |
| CARBON GROOVE | NOT INCLUDED |
| RING GROOVE WIDTH | 0.1250 INCHES MINIMUM AND 0.1260 INCHES MAXIMUM SECOND RING IN |
| RING GROOVE WIDTH | 0.1270 INCHES MINIMUM AND 0.1280 INCHES MAXIMUM FIRST RING IN |
| RING GROOVE WIDTH | 0.2500 INCHES NOMINAL THIRD RING IN |
| DISTANCE BETWEEN PIN BOSSES | 1.812 INCHES NOMINAL IN |
| RETAINING RING GROOVE | INCLUDED |
| SURFACE FINISH | FINISHED |
| RING GROOVE POSITION AND QUANTITY | NUMBER 1,NUMBER 2,NUMBER 3,NUMBER 4,NUMBER 5 AND NUMBER 6 PISTON ALL RINGS |