The Brake Booster Assembly,master Cy, cataloged under National Stock Number 2530-01-104-3491, is classified within Federal Supply Class 2530 (Vehicular Brake, Steering, Axle, Wheel, and Track Components) of the Vehicular Equipment Components group. The manufacturer of record is Dressta North America Ltd. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 2530-01-104-3491 |
| Primary Part Number | 137745 |
| Item Name | Brake Booster Assembly,master Cy |
| FSC / FSG | 2530 / 25 — Vehicular Brake, Steering, Axle, Wheel, and Track Components |
| Manufacturer | Dressta North America Ltd |
| Status | ACTIVE |
| General Characteristics Item Description | CAST IRON HOUSING,MECHANICAL PUSH ROD ACTUATION METHOD,TWO HYDRAULIC PORTS THD INTERNAL BOSS,0.875-14 UNF 2B,R.H. THD,WITH INTEGRAL BYPASS VALVE,4.562 IN O/A W,6.000 IN. O/A H,9.000 IN. O/A LG IN |
| 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 |
|---|---|
| 137745 PRIMARY | Dressta North America Ltd (USA) |
| Reference | Meaning |
|---|---|
| 137745 | 5/9 Secondary reference Komatsu America Corporation |
| 20-100-053 | 3/2 Design control — primary reference U.S. Government activity |
| D-137745 | 5/9 Secondary reference Komatsu America Corporation |
NSN 2530-01-104-3491 is a Brake Booster Assembly,master Cy, manufactured by Dressta North America Ltd, classified under FSC 2530, Vehicular Brake, Steering, Axle, Wheel, and Track Components. Status: active.
NSN 2530-01-104-3491 has 1 manufacturer part number on file: 137745 (Dressta North America Ltd).
1 possible match (shared part number, not a government interchangeability claim): 2815-01-564-4757. Verify interchangeability with system specifications before substitution.
Key specifications for 137745: General Characteristics Item Description: CAST IRON HOUSING,MECHANICAL PUSH ROD ACTUATION METHOD,TWO HYDRAULIC PORTS THD INTERNAL BOSS,0.875-14 UNF 2B,R.H. THD,WITH INTEGRAL BYPASS VALVE,4.562 IN O/A W,6.000 IN. O/A H,9.000 IN. O/A LG IN. 1 specification is 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.