The Retainer,oil,rear, cataloged under National Stock Number 2990-00-970-7551, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Retainer,oil,rear |
| FSC / FSG | 2990 — Miscellaneous Engine Accessories, Nonaircraft (FSG 29) |
| Manufacturers | Caterpillar Inc Div Caterpillar Defense (CAGE 11083); Schwitzer Engine Components a Household Intl Co (CAGE 53591) |
| Parameter | Value |
|---|---|
| NSN | 2990-00-970-7551 |
| Primary Part Number | 1P1122 |
| Item Name | Retainer,oil,rear |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 1P1122 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
| B137095 PRIMARY | Schwitzer Engine Components a Household Intl Co (USA) |
| Reference | Meaning |
|---|---|
| 7M9913 | 5/9 Secondary reference Caterpillar Inc Div Caterpillar Defense |
| IPD7M9913 | 5/9 Secondary reference Industrial Parts Depot, Llc Dba Ipd |
NSN 2990-00-970-7551 is a Retainer,oil,rear, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-00-970-7551 has 2 manufacturer part numbers on file: 1P1122 (Caterpillar Inc Div Caterpillar Defense), B137095 (Schwitzer Engine Components a Household Intl Co).
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.