PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21508Muffler,exhaust

Walker Mfg Co · NSN 2990-01-027-2214 · FSC 2990 · No Item Name Available
Verified by PartsTable
NSN 2990-01-027-2214 — this item is cataloged by the U.S. Government under National Stock Number 2990-01-027-2214. Primary manufacturer part number: 21508.
Features
  • Muffler,exhaust — FSC 2990
  • Outlet Location: CENTRALLY LOCATED IN END SECTION OF BODY OPPOSITE INLET END
  • Outlet Connection Type: UNTHREADED FIRST OUTLET
  • Inlet Location: OFFSET IN END SECTION OF BODY
  • Material: STEEL LOCATION NOT OTHERWISE SPECIFIED
  • Tube Quantity: 3
  • Inlet Projection Length: 2.438 INCHES NOMINAL SINGLE INLET IN
  • Outlet Projection Length: 2.438 INCHES NOMINAL FIRST OUTLET IN
Applications
  • Applications requiring Steel Location Not Otherwise Specified construction
General Description

The Muffler,exhaust, cataloged under National Stock Number 2990-01-027-2214, 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. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN2990-01-027-2214
Primary Part Number21508
Item NameMuffler,exhaust
FSC / FSG2990 / 29 — No Item Name Available
ManufacturerWalker Mfg Co
StatusACTIVE
Outlet LocationCENTRALLY LOCATED IN END SECTION OF BODY OPPOSITE INLET END
Outlet Connection TypeUNTHREADED FIRST OUTLET
Inlet LocationOFFSET IN END SECTION OF BODY
MaterialSTEEL LOCATION NOT OTHERWISE SPECIFIED
Tube Quantity3
Inlet Projection Length2.438 INCHES NOMINAL SINGLE INLET IN
Outlet Projection Length2.438 INCHES NOMINAL FIRST OUTLET IN
Coolant TypeAIR
Operating PositionHORIZONTAL
Outlet Inside Diameter2.250 INCHES NOMINAL FIRST OUTLET IN
Inlet Connection TypeUNTHREADED SINGLE INLET
Inlet Inside Diameter2.500 INCHES NOMINAL SINGLE INLET IN
Body ShapeOVAL
Muffler DesignMULTIPASS
Design TypeDRY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6625-00-005-5529 INTERCHANGEABLE
Ammeter
5935-00-080-9556335C637H02 INTERCHANGEABLE
Connector,plug,electrical
Goodrich Corporation
3110-00-100-61820283 INTERCHANGEABLE
Ball,bearing
Harley Davidson Motor Co Inc
5961-00-117-3906 INTERCHANGEABLE
Parts Kit,holder Se
5365-00-168-667121508 INTERCHANGEABLE
Spacer,sleeve
Eaton Aerospace Llc
5975-00-223-1835 INTERCHANGEABLE
Hanger,cable
3030-00-294-98401070289 INTERCHANGEABLE
Belt,v
Chrysler Realty Company Llc Dba Daimler Chrysler
5365-00-339-3345MC44 INTERCHANGEABLE
Bushing,cam Shaft
Insinger Machine Co
5340-00-353-299312203 INTERCHANGEABLE
Bellows,protection
Tld Wollard Llc
6730-00-356-5931 INTERCHANGEABLE
Shaft
Cross-Reference Index
Part NumberManufacturer
2930 Ap Parts Co Industrial Sales Div (USA)
3828445 Chrysler Realty Company Llc Dba Daimler Chrysler (USA)
21508 PRIMARY Walker Mfg Co (USA)
1154 Haviland Arnold Co (USA)
MC44 PRIMARY Maremont Corp (USA)
891 PRIMARY Merit Industries Inc (USA)
Related Parts
6625-00-005-5529INTERCHANGEABLE
AMMETER
5935-00-080-9556INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
335C637H02
3110-00-100-6182INTERCHANGEABLE
BALL,BEARING
0283
5961-00-117-3906INTERCHANGEABLE
PARTS KIT,HOLDER SE
5365-00-168-6671INTERCHANGEABLE
SPACER,SLEEVE
21508
5975-00-223-1835INTERCHANGEABLE
HANGER,CABLE
3030-00-294-9840INTERCHANGEABLE
BELT,V
1070289
5365-00-339-3345INTERCHANGEABLE
BUSHING,CAM SHAFT
MC44
5340-00-353-2993INTERCHANGEABLE
BELLOWS,PROTECTION
12203
6730-00-356-5931INTERCHANGEABLE
SHAFT
5120-00-398-3538INTERCHANGEABLE
WRENCH,SOCKET,PROPE
HS7627
2040-00-506-0973INTERCHANGEABLE
LINE ASSY
2409-3227846REVAPC21

Frequently Asked Questions

What is NSN 2990-01-027-2214?

NSN 2990-01-027-2214 is a Muffler,exhaust, manufactured by Walker Mfg Co, classified under FSC 2990 (No Item Name Available). Status: active.

What are the part numbers for NSN 2990-01-027-2214?

NSN 2990-01-027-2214 has 6 cross-referenced part numbers: 2930 (Ap Parts Co Industrial Sales Div), 3828445 (Chrysler Realty Company Llc Dba Daimler Chrysler), 21508 (Walker Mfg Co), 1154 (Haviland Arnold Co), MC44 (Maremont Corp) and 1 more.

What NSN replaces 2990-01-027-2214?

There are 12 known substitutes for 2990-01-027-2214: 6625-00-005-5529, 5935-00-080-9556, 3110-00-100-6182 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21508?

Key specifications for 21508: Outlet Location: CENTRALLY LOCATED IN END SECTION OF BODY OPPOSITE INLET END; Outlet Connection Type: UNTHREADED FIRST OUTLET; Overall Length: 29.375 INCHES NOMINAL IN; Overall Width: 9.750 INCHES NOMINAL IN. 18 total characteristics are documented in the Federal Logistics Information System.

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