The Transmission,hydraulic,vehicular, cataloged under National Stock Number 2520-01-166-8881, is classified within Federal Supply Class 2520 (Vehicular Power Transmission Components) of the Vehicular Equipment Components group. The manufacturer of record is Barney & White Auto Parts Inc. Government technical data includes 2 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 2520-01-166-8881 |
| Primary Part Number | AT540/AL9CB |
| Item Name | Transmission,hydraulic,vehicular |
| FSC / FSG | 2520 / 25 — Vehicular Power Transmission Components |
| Manufacturer | Barney & White Auto Parts Inc |
| Status | ACTIVE |
| Design Type | PLANETARY GEAR W/INTEGRAL TORQUE CONVERTER-TRANSFER TRANSMISSION |
| Features Provided | INTEGRAL OIL COOLER |
| 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 |
|---|---|
| AT540/AL9CB PRIMARY | Barney & White Auto Parts Inc (USA) |
| Reference | Meaning |
|---|---|
| AL9CB | 5/9 Secondary reference Barney & White Auto Parts Inc |
| AT540 | 5/9 Secondary reference Navistar International Corporation Dba Navistar |
| 414606C91 | 5/9 Secondary reference Allison Transmission Inc Dba Allison Transmission, Inc |
| AT540/AL9C | 5/9 Secondary reference Barney & White Auto Parts Inc |
| 414606C91 | 3/2 Design control — primary reference U.S. Government activity |
NSN 2520-01-166-8881 is a Transmission,hydraulic,vehicular, manufactured by Barney & White Auto Parts Inc, classified under FSC 2520, Vehicular Power Transmission Components. Status: active.
NSN 2520-01-166-8881 has 1 manufacturer part number on file: AT540/AL9CB (Barney & White Auto Parts Inc).
1 possible match (shared part number, not a government interchangeability claim): 5130-01-368-4504. Verify interchangeability with system specifications before substitution.
Key specifications for AT540/AL9CB: Design Type: PLANETARY GEAR W/INTEGRAL TORQUE CONVERTER-TRANSFER TRANSMISSION; Features Provided: INTEGRAL OIL COOLER; End Item Identification: INTERNATIONAL HARVESTER TRUCK MODELS 183RE; 1600 THRU 1603; 1700 THRU 1750; 1800 SERIES; V304 AND 345 ENGINES. 2 specifications are documented in the U.S. Government catalog.
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.