The Muffler and Inlet Pipe Assembly, cataloged under National Stock Number 2990-01-152-7788, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Walker Mfg Co. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-01-152-7788 |
| Primary Part Number | 41334/22329 |
| Item Name | Muffler and Inlet Pipe Assembly |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Walker Mfg Co |
| Status | ACTIVE |
| General Characteristics Item Description | STAINLESS STEEL; DRY TYPE; AIR COOLANT; STRAIGHT THROUGH; ROUND; 21.250 IN. O/A LG OF MUFFLER; 9.250 IN. O/A DIA OF MUFFLER; WITH ONE RIGHT HAND TAIL PIPE IN |
| 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 |
|---|---|
| 41334/22329 | Walker Mfg Co (USA) |
| Reference | Meaning |
|---|---|
| 14067424 | 5/9 Secondary reference General Motors Corp Chevrolet Motor Div Special Products Dept |
| 14067430 | 3/9 Design control — primary reference General Motors Llc Dba General Motors Llc |
| 14067430 | 5/9 Secondary reference General Motors Corp Chevrolet Motor Div Special Products Dept |
| 3331AND18045 | 5/9 Secondary reference U.S. Government activity |
| 14055564 | 5/9 Secondary reference General Motors Corp Chevrolet Motor Div Special Products Dept |
| 14055567 | 5/9 Secondary reference General Motors Corp Chevrolet Motor Div Special Products Dept |
| 2990011527788 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
NSN 2990-01-152-7788 is a Muffler and Inlet Pipe Assembly, manufactured by Walker Mfg Co, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-152-7788 has 1 manufacturer part number on file: 41334/22329 (Walker Mfg Co).
Key specifications for 41334/22329: General Characteristics Item Description: STAINLESS STEEL; DRY TYPE; AIR COOLANT; STRAIGHT THROUGH; ROUND; 21.250 IN. O/A LG OF MUFFLER; 9.250 IN. O/A DIA OF MUFFLER; WITH ONE RIGHT HAND TAIL PIPE IN; End Item Identification: 2320011232665. 1 specification is 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.