The Muffler,exhaust, cataloged under National Stock Number 2990-01-102-2322, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Cummins Filtration Inc.. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-01-102-2322 |
| Primary Part Number | 16845-A |
| Item Name | Muffler,exhaust |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Cummins Filtration Inc. |
| Status | ACTIVE |
| Operating Position | UNIVERSAL |
| Inlet Outside Diameter | 1.611 INCHES MINIMUM AND 1.631 INCHES MAXIMUM SINGLE INLET IN |
| Inlet Location | LOCATED 5.500 IN. FROM END AND 5 DEG 20 MINUTES FROM CENTER LINE IN |
| Design Type | DRY |
| Overall Diameter | 5.000 INCHES NOMINAL IN |
| Inlet Projection Length | 2.500 INCHES NOMINAL SINGLE INLET IN |
| Muffler Design | DIRECTIONAL VANE |
| Inlet Connection Type | UNTHREADED SINGLE INLET |
| Body Shape | ROUND |
| Nonconnection Outlet Location | CENTRALLY LOCATED IN MIDDLE OF BODY |
| Nonconnection Outlet Type and Quantity | 1 PERFORATED |
| Nonconnection Outlet Size | 14.520 IN. O/A LG,1.500 IN. W,1.370 IN. HIGH IN |
| Inlet Inside Diameter | 1.505 INCHES MINIMUM AND 1.525 INCHES MAXIMUM SINGLE INLET IN |
| Material | STEEL LOCATION NOT OTHERWISE SPECIFIED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 2990-01-102-2322 is a Muffler,exhaust, manufactured by Cummins Filtration Inc., classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-102-2322 has 2 manufacturer part numbers on file: 16845-A (Cummins Filtration Inc.), 4891528-4 (Kalmar AC Inc).
Key specifications for 16845-A: Operating Position: UNIVERSAL; Inlet Outside Diameter: 1.611 INCHES MINIMUM AND 1.631 INCHES MAXIMUM SINGLE INLET IN; Inlet Location: LOCATED 5.500 IN. FROM END AND 5 DEG 20 MINUTES FROM CENTER LINE IN; Design Type: DRY. 14 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.