The Cooler,lubricating Oil,engine, cataloged under National Stock Number 2935-01-579-3033, is classified within Federal Supply Class 2935 (Engine System Cooling Components, Aircraft Prime Moving) of the Engine Accessories group. The manufacturer of record is Triumph Thermal Systems, Llc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2935-01-579-3033 |
| Primary Part Number | UA538551-3 |
| Item Name | Cooler,lubricating Oil,engine |
| FSC / FSG | 2935 / 29 — Engine System Cooling Components, Aircraft Prime Moving |
| Manufacturer | Triumph Thermal Systems, Llc |
| Status | ACTIVE |
| Supplementary Features | ASSY C/O FINNED CORE AND COLLECTOR HOUSING WHICH IS BRAZED TO THE CORE; IN AND OUT PORTS LOCATED ON TOP OF COOLER, NIPPLE IS PROVIDED IN EACH PORT TO AID TO CONNECT TO ENGINE |
| 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 |
|---|---|
| UA538551-3 PRIMARY | Triumph Thermal Systems, Llc (USA) |
| Reference | Meaning |
|---|---|
| 2935PL1784377 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 2935-01-579-3033 is a Cooler,lubricating Oil,engine, manufactured by Triumph Thermal Systems, Llc, classified under FSC 2935, Engine System Cooling Components, Aircraft Prime Moving. Status: active.
NSN 2935-01-579-3033 has 1 manufacturer part number on file: UA538551-3 (Triumph Thermal Systems, Llc).
Key specifications for UA538551-3: Supplementary Features: ASSY C/O FINNED CORE AND COLLECTOR HOUSING WHICH IS BRAZED TO THE CORE; IN AND OUT PORTS LOCATED ON TOP OF COOLER, NIPPLE IS PROVIDED IN EACH PORT TO AID TO CONNECT TO ENGINE; Special Features: INLET(OIL) TEMP -65 DEG F TO 350 DEG F(-53,8 DEG C TO 176,7 DEG C); OIL INLET PRESSURE 300 PSI(2068,4KPA); VALVE CRACKING PRESSURE 50 TO 70 PSIG(344,7 TO 482,7 KPAG); WEIGHT(DRY) 3.75 LBS (1,7 KG); LENGTH 8.0 IN. (203,2MM); WIDTH 3.75 IN. (95,3 MM); HEIGHT 3.75 IN. (95,3 MM LBS; Part Name Assigned by Controlling Agency: OIL COOLER AND RELIEF BYPASS VALVE ASSY. 1 specification is 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.