NSN 1650-01-667-2419 · NIIN 016672419 · Part number 4508445
Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp · FSC 1650 — Aircraft Hydraulic, Vacuum, and De-icing System Components · FSG 16 — Aircraft Components and Accessories · CAGE 78286
Government record, cited
NSN 1650-01-667-2419 — this item is cataloged by the U.S. Government under National Stock Number 1650-01-667-2419. Manufacturer of record part number: 4508445.
Also searched as1650-01-667-2419 ·
1650016672419 ·
NIIN 016672419 ·
01-667-2419 ·
FSC 1650 Aircraft Hydraulic, Vacuum, and De-icing System Components · CAGE 78286 · 4508445
The Oil Cooler Inlet, cataloged under National Stock Number 1650-01-667-2419, is classified within Federal Supply Class 1650 (Aircraft Hydraulic, Vacuum, and De-icing System Components) of the Aircraft Components and Accessories group. The manufacturer of record is Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp. Government technical data includes 1 specification, 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. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
1650-01-667-2419
Primary Part Number
4508445
Item Name
Oil Cooler Inlet
FSC / FSG
1650 / 16 — Aircraft Hydraulic, Vacuum, and De-icing System Components
Other items in FSC 1650 — Aircraft Hydraulic, Vacuum, and De-icing System Components
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
1650-00-011-0886
1650-00-011-0886 · Item name not on file
1650-00-013-3761
SLIDE,SELECTOR
1650-00-059-7742
PARTS KIT,SEAL REPLACEMENT,MECHA
1650-00-101-7836
CLIP,RETURN PLATE
1650-00-138-2779
FILTERING DISK,FLUID
1650-00-162-3907
PARTS KIT,LINEAR ACTUATING CYLIN
1650-00-594-3500
DISK,VALVE
1650-00-658-8056
PARTS KIT,VALVE
Frequently Asked Questions
What is NSN 1650-01-667-2419?
NSN 1650-01-667-2419 is a Oil Cooler Inlet, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 1650, Aircraft Hydraulic, Vacuum, and De-icing System Components. Status: active.
What part numbers are listed for NSN 1650-01-667-2419?
NSN 1650-01-667-2419 has 2 manufacturer part numbers on file: 4508445 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp), 4508445 (Rtx Corporation Div Pratt & Whitney).
What are the specifications of 4508445?
Key specifications for 4508445: Criticality Code Justification: AGAV; Part Name Assigned by Controlling Agency: DUCT,APU FAN; End Item Identification: CRITICAL APPLICATION ITEM (CAI);CH-53K SIKORSKY HEAVY LIFT HELICOPTER. 1 specification is documented in the U.S. Government catalog.
Is NSN 1650-01-667-2419 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
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.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.