NSN 2990-01-508-8605 — this item is cataloged by the U.S. Government under National Stock Number 2990-01-508-8605. Manufacturer of record part number: 3801801.
The Aftercooler, cataloged under National Stock Number 2990-01-508-8605, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Cummins Inc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.
Other items in FSC 2990 — Miscellaneous Engine Accessories, Nonaircraft
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
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MUFFLER,EXHAUST
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BLOCK,ADJUSTING SCREW
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CONNECTOR,EXHAUST PIPE
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CONNECTOR,EXHAUST PIPE
Frequently Asked Questions
What is NSN 2990-01-508-8605?
NSN 2990-01-508-8605 is a Aftercooler, manufactured by Cummins Inc, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
What part numbers are listed for NSN 2990-01-508-8605?
NSN 2990-01-508-8605 has 1 manufacturer part number on file: 3801801 (Cummins Inc).
What are the specifications of 3801801?
Key specifications for 3801801: Overall Height: 7.875 INCHES NOMINAL IN; Overall Length: 38.750 INCHES NOMINAL IN; Overall Width: 5.500 INCHES NOMINAL IN. 0 specifications are documented in the U.S. Government catalog.
Is NSN 2990-01-508-8605 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.