The Ring,reinforcement Transmission, cataloged under National Stock Number 2990-01-496-2502, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Allison Transmission Inc Dba Allison Transmission, Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-01-496-2502 |
| Primary Part Number | 23045170 |
| Item Name | Ring,reinforcement Transmission |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Allison Transmission Inc Dba Allison Transmission, Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 23045170 PRIMARY | Allison Transmission Inc Dba Allison Transmission, Inc (USA) |
| Reference | Meaning |
|---|---|
| AS04-273 | D/9 Drawing number reference only Allison Transmission Inc Dba Allison Transmission, Inc |
NSN 2990-01-496-2502 is a Ring,reinforcement Transmission, manufactured by Allison Transmission Inc Dba Allison Transmission, Inc, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-496-2502 has 1 manufacturer part number on file: 23045170 (Allison Transmission Inc Dba Allison Transmission, Inc).
1 possible match (shared part number, not a government interchangeability claim): 2520-01-496-6011. Verify interchangeability with system specifications before substitution.
Key specifications for 23045170: Special Features: NHA AS04-273 (73342) PHYSICAL ADAPTATION, CATERPILLAR 3116 SERIES; Part Name Assigned by Controlling Agency: RING ASSY; End Item Identification: TRUCK, CARGO, DROPSIDE; 2320-01-383-3850. 0 specifications are documented in the U.S. Government catalog.
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.