PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

445INMuffler,exhaust

Cummins Filtration Inc. · NSN 2990-00-301-6533 · FSC 2990 · No Item Name Available
Verified by PartsTable
NSN 2990-00-301-6533 — this item is cataloged by the U.S. Government under National Stock Number 2990-00-301-6533. Primary manufacturer part number: 445IN.
Features
  • Muffler,exhaust — FSC 2990
  • 8 verified cross-references
  • Primary manufacturer: Cummins Filtration Inc.
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Muffler,exhaust, cataloged under National Stock Number 2990-00-301-6533, is classified within Federal Supply Class 2990 (No Item Name Available) of the Engine Accessories group. The primary manufacturer of record is Cummins Filtration Inc.. This item has 8 commercial cross-references from 4 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)
ManufacturersBriggs and Stratton Corp (CAGE 08645); Cummins Filtration Inc. (CAGE 76700); Ar Bee Corp (CAGE 52993); Brighton Cromwell Llc (CAGE 3NNX8)
Technical Specifications
ParameterValue
NSN2990-00-301-6533
Primary Part Number445IN
Item NameMuffler,exhaust
FSC / FSG2990 / 29 — No Item Name Available
ManufacturerCummins Filtration Inc.
StatusCANCELLED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5305-00-003-67904451 INTERCHANGEABLE
Screw,shoulder
Roller Bearing Co of America, Inc Div Pic Design
6685-00-020-8387 INTERCHANGEABLE
Transmitter,temperature,electric
5365-00-142-287710288-8 INTERCHANGEABLE
Plug,machine Thread
Cummins Inc.
5330-00-238-7951 INTERCHANGEABLE
Gasket
5120-00-293-2057250SB1 INTERCHANGEABLE
Bit,screwdriver
Qualtool Inc
4130-00-359-7079S18-527A INTERCHANGEABLE
Valve
Thermo King Corporation Dba Phoenix Global Distirbution.
6760-00-397-9651601130 INTERCHANGEABLE
Screen,aerial Image,focusing
Polaroid Corporation Dba Polaroid
5360-00-527-1063 INTERCHANGEABLE
Spring,helical,compression
5930-00-548-9069SCB61726 INTERCHANGEABLE
Switch Assembly
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
6685-00-930-0601G251A36S INTERCHANGEABLE
Thermocouple
Emerson Electric Co White Rodgers Co Div
Cross-Reference Index
Part NumberManufacturer
293813 Briggs and Stratton Corp (USA)
T-4451 Cummins Filtration Inc. (USA)
445IN PRIMARY Cummins Filtration Inc. (USA)
293460 Briggs and Stratton Corp (USA)
4451 Cummins Filtration Inc. (USA)
ABT4451 Ar Bee Corp (USA)
293459 Briggs and Stratton Corp (USA)
ABT4451 Brighton Cromwell Llc (USA)
Related Parts
5305-00-003-6790INTERCHANGEABLE
SCREW,SHOULDER
4451
6685-00-020-8387INTERCHANGEABLE
TRANSMITTER,TEMPERATURE,ELECTRIC
5365-00-142-2877INTERCHANGEABLE
PLUG,MACHINE THREAD
10288-8
5330-00-238-7951INTERCHANGEABLE
GASKET
5120-00-293-2057INTERCHANGEABLE
BIT,SCREWDRIVER
250SB1
4130-00-359-7079INTERCHANGEABLE
VALVE
S18-527A
6760-00-397-9651INTERCHANGEABLE
SCREEN,AERIAL IMAGE,FOCUSING
601130
5360-00-527-1063INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
5930-00-548-9069INTERCHANGEABLE
SWITCH ASSEMBLY
SCB61726
6685-00-930-0601INTERCHANGEABLE
THERMOCOUPLE
G251A36S
5905-00-994-7192INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND,INDUCT
995-3A8200
5998-01-050-5860INTERCHANGEABLE
PRINTED CIRCUIT BOARD
293-459

Frequently Asked Questions

What is NSN 2990-00-301-6533?

NSN 2990-00-301-6533 is a Muffler,exhaust, manufactured by Cummins Filtration Inc., classified under FSC 2990 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 2990-00-301-6533?

NSN 2990-00-301-6533 has 8 cross-referenced part numbers: 293813 (Briggs and Stratton Corp), T-4451 (Cummins Filtration Inc.), 445IN (Cummins Filtration Inc.), 293460 (Briggs and Stratton Corp), 4451 (Cummins Filtration Inc.) and 3 more.

What NSN replaces 2990-00-301-6533?

There are 12 known substitutes for 2990-00-301-6533: 5305-00-003-6790, 6685-00-020-8387, 5365-00-142-2877 and 9 more. Verify interchangeability with system specifications before substitution.

Is NSN 2990-00-301-6533 still in active supply?

NSN 2990-00-301-6533 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.
PartsTable Design LLC · partstable.com