The Impeller,fan,axial, cataloged under National Stock Number 2930-01-398-8319, is classified within Federal Supply Class 2930 (Engine Cooling System Components, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Borgwarner Thermal Systems Inc. Div Emissions/thermal Systems. Government technical data includes 10 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2930-01-398-8319 |
| Primary Part Number | 4735-38449-18 |
| Item Name | Impeller,fan,axial |
| FSC / FSG | 2930 / 29 — Engine Cooling System Components, Nonaircraft |
| Manufacturer | Borgwarner Thermal Systems Inc. Div Emissions/thermal Systems |
| Status | ACTIVE |
| Mounting Hole Quantity | 6 |
| Style Designator | STRAIGHT TIP |
| Attachment Method | BOLT HOLE |
| Mounting Hole Diameter | 0.406 INCHES NOMINAL IN |
| Diameter | 22.000 INCHES NOMINAL IN |
| Blade Shape | STRAIGHT |
| Blade Quantity | 10 |
| Mounting Bolt Circle Diameter | 3.500 INCHES NOMINAL IN |
| Hub Location | CENTER |
| Rotation Direction for Which Designed | CLOCKWISE |
| 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 |
|---|---|
| 12448651 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 4735-38449-18 PRIMARY | Borgwarner Thermal Systems Inc. Div Emissions/thermal Systems (USA) |
| Reference | Meaning |
|---|---|
| 2930013988319 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| 12448651 | 5/9 Secondary reference Am General Llc |
| 4035-38449-18 | 5/9 Secondary reference Borgwarner Thermal Systems Inc. Div Emissions/thermal Systems |
| RCSK-14620 | 5/9 Secondary reference U S Army Tank Automotive Command Amsta-Im-Mm |
| RCSK-14620 | 5/9 Secondary reference Am General Llc |
NSN 2930-01-398-8319 is a Impeller,fan,axial, manufactured by Borgwarner Thermal Systems Inc. Div Emissions/thermal Systems, classified under FSC 2930, Engine Cooling System Components, Nonaircraft. Status: active.
NSN 2930-01-398-8319 has 2 manufacturer part numbers on file: 12448651 (U S Army Tank Automotive Command Amsta-Im-Mm), 4735-38449-18 (Borgwarner Thermal Systems Inc. Div Emissions/thermal Systems).
Key specifications for 4735-38449-18: Mounting Hole Quantity: 6; Style Designator: STRAIGHT TIP; Attachment Method: BOLT HOLE; Mounting Hole Diameter: 0.406 INCHES NOMINAL IN. 10 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.