The Radiator,engine Coolant, cataloged under National Stock Number 2930-01-309-1726, is classified within Federal Supply Class 2930 (Engine Cooling System Components, Nonaircraft) of the Engine Accessories group. The manufacturer of record is General Motors Llc Dba General Motors Llc. Government technical data includes 21 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 2930-01-309-1726 |
| Primary Part Number | 20257 |
| Item Name | Radiator,engine Coolant |
| FSC / FSG | 2930 / 29 — Engine Cooling System Components, Nonaircraft |
| Manufacturer | General Motors Llc Dba General Motors Llc |
| Status | ACTIVE |
| Core Width | 28.250 INCHES NOMINAL IN |
| Inlet Connection End Type | PLAIN |
| Filler Neck | INCLUDED |
| Core Height | 16.875 INCHES NOMINAL IN |
| Tank Quantity | 1 SECOND TANK RIGHT SIDE |
| Tank Quantity | 1 FIRST TANK LEFT SIDE |
| Outlet Connection End Quantity | 1 |
| Inlet Connection End Shape | ROUND |
| Inlet Connection End Quantity | 1 |
| Tank Location | RIGHT SIDE SECOND TANK RIGHT SIDE |
| Tank Location | LEFT SIDE FIRST TANK LEFT SIDE |
| Mounting Feature | NOT INCLUDED |
| Valve Casing | NOT INCLUDED |
| Fan Shroud | NOT INCLUDED |
| Coolant Level Elbow Check Valve | NOT INCLUDED |
| Core Type | RIBBON CELLULAR |
| Filler Neck Quantity | 1 |
| Outlet Connection End Shape | ROUND |
| Core Thickness | 1.625 INCHES NOMINAL IN |
| Core Quantity | 3 |
| Outlet End Connection Type | PLAIN |
| 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 |
|---|---|
| 20257 PRIMARY | General Motors Llc Dba General Motors Llc (USA) |
| 3058989 PRIMARY | General Motors Llc Dba General Motors Llc (USA) |
| Reference | Meaning |
|---|---|
| 20257 | 5/9 Secondary reference General Motors Corp AC-Delco Div Government Order Dept |
| 3058989 | 5/9 Secondary reference General Motors Corp Chevrolet Motor Div Special Products Dept |
NSN 2930-01-309-1726 is a Radiator,engine Coolant, manufactured by General Motors Llc Dba General Motors Llc, classified under FSC 2930, Engine Cooling System Components, Nonaircraft. Status: active.
NSN 2930-01-309-1726 has 2 manufacturer part numbers on file: 20257 (General Motors Llc Dba General Motors Llc), 3058989 (General Motors Llc Dba General Motors Llc).
1 possible match (shared part number, not a government interchangeability claim): 2910-01-345-5753. Verify interchangeability with system specifications before substitution.
Key specifications for 20257: Core Width: 28.250 INCHES NOMINAL IN; Inlet Connection End Type: PLAIN; Filler Neck: INCLUDED; Core Height: 16.875 INCHES NOMINAL IN. 21 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.