PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21476Muffler,exhaust

Walker Mfg Co · NSN 2990-00-790-2644 · FSC 2990 · No Item Name Available
Verified by PartsTable
NSN 2990-00-790-2644 — this item is cataloged by the U.S. Government under National Stock Number 2990-00-790-2644. Primary manufacturer part number: 21476.
Features
  • Muffler,exhaust — FSC 2990
  • 45 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 2990-00-790-2644, 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 45 commercial cross-references from 21 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)
ManufacturersWalker Mfg Co (CAGE 30278); Military Vehicles Opn General Motors Truck and Bus Group Ms 2603-02 (CAGE 23862); Walker Mfg Co (CAGE 79260); Donaldson Company, Inc. (CAGE 18265); Navistar Intl Corp Truck Br Ohio Plant (CAGE 89346)
Technical Specifications
ParameterValue
NSN2990-00-790-2644
Primary Part Number21476
Item NameMuffler,exhaust
FSC / FSG2990 / 29 — No Item Name Available
ManufacturerWalker Mfg Co
StatusCANCELLED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
6625-00-009-4222270-4 INTERCHANGEABLE
Multimeter
Simpson Electric Company, Inc.
5940-00-079-1575826 INTERCHANGEABLE
Terminal Board
Keystone Electronics Corp
1560-00-097-6749953-1 INTERCHANGEABLE
Ladder,rope,emergency
Ami Industries, Inc Div Utc Aerospace Systems
5330-00-119-420522980 INTERCHANGEABLE
Gasket
Dana Automotive Systems Group, Llc Dba Dana Sealing Products
9540-00-145-8450 INTERCHANGEABLE
Angle,structural
5995-00-164-6527103605 INTERCHANGEABLE
Cable Assembly,power,electrical
Lucent Technologies Inc Corporate Headquarters
5133-00-170-5024103605 INTERCHANGEABLE
Cutter,counterbore
Huck International, Inc. Div Kingston Operations
5975-00-194-8848 INTERCHANGEABLE
Extension,junction Box
5975-00-194-8863 INTERCHANGEABLE
Junction Box
5315-00-198-5979MS24692-277 INTERCHANGEABLE
Pin,tapered,plain
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
Cross-Reference Index
Part NumberManufacturer
21476 Walker Mfg Co (USA)
2485787 Military Vehicles Opn General Motors Truck and Bus Group Ms 2603-02 (USA)
21476 PRIMARY Walker Mfg Co (USA)
MZM08-5023 Donaldson Company, Inc. (USA)
211618R91 Navistar Intl Corp Truck Br Ohio Plant (USA)
TD2 PRIMARY Maremont Corp (USA)
466984C91 Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/ (USA)
466984C91 PRIMARY Dressta North America Ltd (USA)
13964 Cummins Filtration Inc. (USA)
244007R91 Navistar International Corporation Dba Navistar (USA)
MZM085023 PRIMARY Donaldson Company, Inc. (USA)
244007R91 Navistar Intl Corp Truck Br Ohio Plant (USA)
T-13964-C Cummins Filtration Inc. (USA)
9531 Teck Exhaust Systems Inc (USA)
86139M PRIMARY Cummins Filtration Inc. (USA)
244007R91 Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/ (USA)
A23180-28 Tiffin Parts, L.l.c. Div Subsidiary of Pettibone Corp. (USA)
211618R91 Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/ (USA)
465971C1 Navistar International Corporation Dba Navistar (USA)
465971C1 Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/ (USA)
Related Parts
6625-00-009-4222INTERCHANGEABLE
MULTIMETER
270-4
5940-00-079-1575INTERCHANGEABLE
TERMINAL BOARD
826
1560-00-097-6749INTERCHANGEABLE
LADDER,ROPE,EMERGENCY
953-1
5330-00-119-4205INTERCHANGEABLE
GASKET
22980
9540-00-145-8450INTERCHANGEABLE
ANGLE,STRUCTURAL
5995-00-164-6527INTERCHANGEABLE
CABLE ASSEMBLY,POWER,ELECTRICAL
103605
5133-00-170-5024INTERCHANGEABLE
CUTTER,COUNTERBORE
103605
5975-00-194-8848INTERCHANGEABLE
EXTENSION,JUNCTION BOX
5975-00-194-8863INTERCHANGEABLE
JUNCTION BOX
5315-00-198-5979INTERCHANGEABLE
PIN,TAPERED,PLAIN
MS24692-277
5999-00-204-6148INTERCHANGEABLE
CONTACT,ELECTRICAL
2704
5940-00-237-6804INTERCHANGEABLE
POST,BINDING,ELECTRICAL
2804-103

Frequently Asked Questions

What is NSN 2990-00-790-2644?

NSN 2990-00-790-2644 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 2990-00-790-2644?

NSN 2990-00-790-2644 has 45 cross-referenced part numbers: 21476 (Walker Mfg Co), 2485787 (Military Vehicles Opn General Motors Truck and Bus Group Ms 2603-02), 21476 (Walker Mfg Co), MZM08-5023 (Donaldson Company, Inc.), 211618R91 (Navistar Intl Corp Truck Br Ohio Plant) and 40 more.

What NSN replaces 2990-00-790-2644?

There are 12 known substitutes for 2990-00-790-2644: 6625-00-009-4222, 5940-00-079-1575, 1560-00-097-6749 and 9 more. Verify interchangeability with system specifications before substitution.

Is NSN 2990-00-790-2644 still in active supply?

NSN 2990-00-790-2644 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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