| Item | Part No. | Part Name | Qty | Serial No. |
| 28786KF | FILTER ASSEMBLY, CASE DRAIN RETURN | | |
| 1 | 10882 | BOLT (5/16 IN x 3/4 IN) | | |
| 2 | 15559KF | WASHER, SAE FLAT (5/16 IN) | | |
| 3 | 24825 | COVER, FILTER HEAD | | |
| 4 | (NSS) | O-RING, FILTER HEAD COVER | | |
| 5 | 4A1-60-10140 | ELEMENT, RETURN FILTER | | |
| 6 | 11360 | PLUG | | |
| 7 | 23597 | HEAD, RETURN FILTER | | |
| 8 | (NSS) | O-RING, SQUARE FILTER HEAD | | |
| 9 | 16769 | TUBE, DIFFUSER | | |
| 10 | (NSS) | GASKET, RUBBER FILTER MOUNTING | | |
| 28788KF | FILTER ASSEMBLY, ATTACHMENT RETURN | | |
| 11 | 10882 | BOLT (5/16 IN x 3/4) | | |
| 12 | 15559KF | WASHER, SAE FLAT (5/16 IN) | | |
| 13 | 24825 | COVER, FILTER HEAD | | |
| 14 | (NSS) | O-RING, FILTER HEAD COVER | | |
| 15 | 4A1-60-10140 | ELEMENT, RETURN FILTER | | |
| 16 | 11360 | PLUG | | |
| 17 | 24789 | HEAD, CASE FILTER | | |
| 18 | (NSS) | O-RING, SQUARE FILTER HEAD | | |
| 19 | 16769 | TUBE, DIFFUSER | | |
| 20 | (NSS) | GASKET, RUBBER FILTER MOUNTING | | |
| 21 | 27334 | SCREEN, FILTER CANISTER TANK | | |
| 16852 | SEAL REPAIR KIT, RETURN FILTER | | |
| | | | |
| | F1 - PART AVAILABLE IN SERVICE KIT: | | |
