The Block,spacer,differential, cataloged under National Stock Number 2520-01-155-6829, is classified within Federal Supply Class 2520 (Vehicular Power Transmission Components) of the Vehicular Equipment Components group. The manufacturer of record is General Motors Llc Dba General Motors Llc. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Block,spacer,differential |
| FSC / FSG | 2520 — Vehicular Power Transmission Components (FSG 25) |
| Manufacturers | Eaton Corp Fluid Power Opns Marshall Div (CAGE 19954); General Motors Llc Dba General Motors Llc (CAGE 7X677) |
| Parameter | Value |
|---|---|
| NSN | 2520-01-155-6829 |
| Primary Part Number | 12471398 |
| Item Name | Block,spacer,differential |
| FSC / FSG | 2520 / 25 — Vehicular Power Transmission Components |
| Manufacturer | General Motors Llc Dba General Motors Llc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| EDS-99593-42 | Eaton Corp Fluid Power Opns Marshall Div (USA) |
| 12471398 PRIMARY | General Motors Llc Dba General Motors Llc (USA) |
| Reference | Meaning |
|---|---|
| 14048424 | D/9 Drawing number reference only General Motors Corp Chevrolet Motor Div Special Products Dept |
| 14048430 | 5/9 Secondary reference General Motors Corp Chevrolet Motor Div Special Products Dept |
| EDS-99593 | D/9 Drawing number reference only Eaton Corp Fluid Power Opns Marshall Div |
| 14048430 | 3/9 Design control — primary reference General Motors Llc Dba General Motors Llc |
NSN 2520-01-155-6829 is a Block,spacer,differential, manufactured by General Motors Llc Dba General Motors Llc, classified under FSC 2520, Vehicular Power Transmission Components. Status: active.
NSN 2520-01-155-6829 has 2 manufacturer part numbers on file: EDS-99593-42 (Eaton Corp Fluid Power Opns Marshall Div), 12471398 (General Motors Llc Dba General Motors Llc).
2 possible matches (shared part number, not a government interchangeability claim): 2520-01-155-6830, 2520-01-156-8309. Verify interchangeability with system specifications before substitution.
Possible hazard — SDS may be required (DLA HMIC P). 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.