The Muffler,intake, cataloged under National Stock Number 2990-01-721-3389, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Skarda Equipment Company, Inc.. Government technical data includes 3 specifications, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2990-01-721-3389 |
| Primary Part Number | X07-0312007 |
| Item Name | Muffler,intake |
| FSC / FSG | 2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft |
| Manufacturer | Skarda Equipment Company, Inc. |
| Status | ACTIVE |
| Overall Diameter | 3.375 INCHES NOMINAL IN |
| Inlet Connection Quantity | 1 |
| Inlet Thread Size | 0.75 SINGLE INLET |
| 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 |
|---|---|
| X07-0312007 | Skarda Equipment Company, Inc. (USA) |
| Reference | Meaning |
|---|---|
| X07-0312007 | 3/9 Design control — primary reference U.S. Government activity |
NSN 2990-01-721-3389 is a Muffler,intake, manufactured by Skarda Equipment Company, Inc., classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
NSN 2990-01-721-3389 has 1 manufacturer part number on file: X07-0312007 (Skarda Equipment Company, Inc.).
Key specifications for X07-0312007: Overall Diameter: 3.375 INCHES NOMINAL IN; Inlet Connection Quantity: 1; Overall Length: 7.18 INCHES NOMINAL IN; Inlet Thread Size: 0.75 SINGLE INLET. 3 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.