Heat Shield, Exhaust2990-01-677-5378

NSN 2990-01-677-5378 · NIIN 016775378 · Part number 12680299

General Motors Corp · FSC 2990 — Miscellaneous Engine Accessories, Nonaircraft · FSG 29 — Engine Accessories · CAGE 24617

Government record, cited

NSN 2990-01-677-5378 — this item is cataloged by the U.S. Government under National Stock Number 2990-01-677-5378. Manufacturer of record part number: 12680299.

Also searched as 2990-01-677-5378 · 2990016775378 · NIIN 016775378 · 01-677-5378 · FSC 2990 Miscellaneous Engine Accessories, Nonaircraft · CAGE 24617 · 12680299 · 4392531

Nearby stock numbers ← 2990-01-677-5369 Sensor, Crankshaft Position, Emiss · 2990-01-677-5380 Sensor, Air Charged Temperature, E →

Features

Heat Shield,exhaust — FSC 2990
Material: STEEL
1 manufacturer part number on file
Manufacturer of record: General Motors Corp

Identification

NSN: 2990-01-677-5378
NIIN: 016775378
FSC: 2990 — Miscellaneous Engine Accessories, Nonaircraft
FSG: 29 — Engine Accessories
Primary part number: 12680299
Manufacturer: General Motors Corp

General Description

The Heat Shield,exhaust, cataloged under National Stock Number 2990-01-677-5378, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is General Motors Corp. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.

Technical Specifications

Parameter	Value
NSN	2990-01-677-5378
Primary Part Number	12680299
Item Name	Heat Shield,exhaust
FSC / FSG	2990 / 29 — Miscellaneous Engine Accessories, Nonaircraft
Manufacturer	General Motors Corp
Status	ACTIVE
Material	STEEL

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	No hazard code in the DLA record (HMIC N)
Criticality Code	X

Cross-Reference Index

Part Number	Manufacturer
12680299 PRIMARY	General Motors Corp (USA)

Reference documents

Reference	Meaning
4392531	7/2 Vendor item drawing reference Oshkosh Defense Llc

Frequently Asked Questions

What is NSN 2990-01-677-5378?

NSN 2990-01-677-5378 is a Heat Shield,exhaust, manufactured by General Motors Corp, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.

What part numbers are listed for NSN 2990-01-677-5378?

NSN 2990-01-677-5378 has 1 manufacturer part number on file: 12680299 (General Motors Corp).

What are the specifications of 12680299?

Key specifications for 12680299: Special Features: HEAT SHIELD,EXHAUST;LENGTH 8.77 IN, WIDTH 7.47 IN;HEIGHT 4.14; IN; Part Name Assigned by Controlling Agency: HTSHLD, UP PIPE, DMAX, RH; End Item Identification: 2320-016536516; Material: STEEL. 1 specification is documented in the U.S. Government catalog.

Is NSN 2990-01-677-5378 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.

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