PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21910Muffler,exhaust

Walker Mfg Co · NSN 2990-01-046-1170 · FSC 2990 · No Item Name Available
Verified by PartsTable
NSN 2990-01-046-1170 — this item is cataloged by the U.S. Government under National Stock Number 2990-01-046-1170. Primary manufacturer part number: 21910.
Features
  • Muffler,exhaust — FSC 2990
  • 16 verified cross-references
  • Primary manufacturer: Walker Mfg Co
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Muffler,exhaust, cataloged under National Stock Number 2990-01-046-1170, is classified within Federal Supply Class 2990 (No Item Name Available) of the Engine Accessories group. The primary manufacturer of record is Walker Mfg Co. This item has 16 commercial cross-references from 10 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Catalog Facts
Item NameMuffler,exhaust
FSC / FSG2990 — No Item Name Available (FSG 29)
ManufacturersGeneral Motors Corp (CAGE 24617); Walker Mfg Co (CAGE 79260); General Motors Corp Chevrolet Motor Div Special Products Dept (CAGE 11862); E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales (CAGE A00AM); Maremont Corp (CAGE 76110)
Technical Specifications
ParameterValue
NSN2990-01-046-1170
Primary Part Number21910
Item NameMuffler,exhaust
FSC / FSG2990 / 29 — No Item Name Available
ManufacturerWalker Mfg Co
StatusCANCELLED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5365-00-023-8379294-3 INTERCHANGEABLE
Shim
Aerocontrolex Group, Inc. Div Talley Actuators
3120-00-147-52732943 INTERCHANGEABLE
Bushing,sleeve
Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.
5360-00-201-0646200108PC5 INTERCHANGEABLE
Spring,helical,compression
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
6250-00-227-03175111-20 INTERCHANGEABLE
Lampholder
Raytheon Company Div Rmd Strategic
5670-00-285-2463 INTERCHANGEABLE
Ventilator,air Circulating
2815-00-404-361413379 INTERCHANGEABLE
Plate,cam
Industrial Technologies and Services Llc
4920-00-444-2355AA4920-8503-2943 INTERCHANGEABLE
Bar,pair Blade Position
Us Army Aviation and Missile Command
5905-00-557-9474 INTERCHANGEABLE
Resistor,variable,wire Wound,non
5330-00-684-7852S1500 INTERCHANGEABLE
Packing with Retainer
Thomson Industries Inc
5120-00-786-7500 INTERCHANGEABLE
Remover,electrical Contact
Cross-Reference Index
Part NumberManufacturer
357399 General Motors Corp (USA)
21910 PRIMARY Walker Mfg Co (USA)
14063795 General Motors Corp Chevrolet Motor Div Special Products Dept (USA)
14033594 General Motors Corp Chevrolet Motor Div Special Products Dept (USA)
22093 Walker Mfg Co (USA)
14089132 General Motors Corp Chevrolet Motor Div Special Products Dept (USA)
2990010461170 E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales
14034894 General Motors Corp Chevrolet Motor Div Special Products Dept (USA)
ZD010 PRIMARY Maremont Corp (USA)
357399 General Motors Corp Chevrolet Motor Div Special Products Dept (USA)
14063795 General Motors Llc Dba General Motors Llc (USA)
2943 Ap Parts North American Aftermarket Div (USA)
14095600 Military Vehicles Opn General Motors Truck and Bus Group Ms 2603-02 (USA)
474206 Marmon-Herrington Company (USA)
ZD010 Maremount Corp (USA)
14034894 General Motors Llc Dba General Motors Llc (USA)
Related Parts
5365-00-023-8379INTERCHANGEABLE
SHIM
294-3
3120-00-147-5273INTERCHANGEABLE
BUSHING,SLEEVE
2943
5360-00-201-0646INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
200108PC5
6250-00-227-0317INTERCHANGEABLE
LAMPHOLDER
5111-20
5670-00-285-2463INTERCHANGEABLE
VENTILATOR,AIR CIRCULATING
2815-00-404-3614INTERCHANGEABLE
PLATE,CAM
13379
4920-00-444-2355INTERCHANGEABLE
BAR,PAIR BLADE POSITION
AA4920-8503-2943
5905-00-557-9474INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,NON
5330-00-684-7852INTERCHANGEABLE
PACKING WITH RETAINER
S1500
5120-00-786-7500INTERCHANGEABLE
REMOVER,ELECTRICAL CONTACT
5985-00-888-5511INTERCHANGEABLE
DUMMY LOAD,ELECTRICAL
114A
6220-00-923-8625INTERCHANGEABLE
LIGHT,MARKER,CLEARANCE
02161-8047-01

Frequently Asked Questions

What is NSN 2990-01-046-1170?

NSN 2990-01-046-1170 is a Muffler,exhaust, manufactured by Walker Mfg Co, classified under FSC 2990 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 2990-01-046-1170?

NSN 2990-01-046-1170 has 16 cross-referenced part numbers: 357399 (General Motors Corp), 21910 (Walker Mfg Co), 14063795 (General Motors Corp Chevrolet Motor Div Special Products Dept), 14033594 (General Motors Corp Chevrolet Motor Div Special Products Dept), 22093 (Walker Mfg Co) and 11 more.

What NSN replaces 2990-01-046-1170?

There are 12 known substitutes for 2990-01-046-1170: 5365-00-023-8379, 3120-00-147-5273, 5360-00-201-0646 and 9 more. Verify interchangeability with system specifications before substitution.

Is NSN 2990-01-046-1170 still in active supply?

NSN 2990-01-046-1170 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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