PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

86131-MMuffler,exhaust

Cummins Filtration Inc. · NSN 2990-01-031-7251 · FSC 2990 · No Item Name Available
Verified by PartsTable
NSN 2990-01-031-7251 — this item is cataloged by the U.S. Government under National Stock Number 2990-01-031-7251. Primary manufacturer part number: 86131-M.
Features
  • Muffler,exhaust — FSC 2990
  • Inlet Projection Length: 3.500 INCHES NOMINAL SINGLE INLET IN
  • Surface Treatment: ALUMINUM ALLOY
  • Inlet Outside Diameter: 4.000 INCHES NOMINAL SINGLE INLET IN
  • Outlet Connection Type: UNTHREADED FIRST OUTLET
  • Outlet Outside Diameter: 4.000 INCHES NOMINAL FIRST OUTLET IN
  • Outlet Location: CENTRALLY LOCATED IN END SECTION OF BODY
  • Outlet Projection Length: 3.500 INCHES NOMINAL FIRST OUTLET IN
Applications
  • Applications requiring Steel Location Not Otherwise Specified construction
General Description

The Muffler,exhaust, cataloged under National Stock Number 2990-01-031-7251, 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.. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 3 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
NSN2990-01-031-7251
Primary Part Number86131-M
Item NameMuffler,exhaust
FSC / FSG2990 / 29 — No Item Name Available
ManufacturerCummins Filtration Inc.
StatusACTIVE
Inlet Projection Length3.500 INCHES NOMINAL SINGLE INLET IN
Surface TreatmentALUMINUM ALLOY
Inlet Outside Diameter4.000 INCHES NOMINAL SINGLE INLET IN
Outlet Connection TypeUNTHREADED FIRST OUTLET
Outlet Outside Diameter4.000 INCHES NOMINAL FIRST OUTLET IN
Outlet LocationCENTRALLY LOCATED IN END SECTION OF BODY
Outlet Projection Length3.500 INCHES NOMINAL FIRST OUTLET IN
Inlet LocationCENTRALLY LOCATED IN END SECTION OF BODY
MaterialSTEEL LOCATION NOT OTHERWISE SPECIFIED
Design TypeDRY
Inlet Connection TypeUNTHREADED SINGLE INLET
Coolant TypeAIR
Body ShapeROUND
Muffler DesignSTRAIGHT THROUGH
Overall Diameter9.000 INCHES NOMINAL IN
Operating PositionHORIZONTAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5999-00-012-982309336000 INTERCHANGEABLE
Contact,electrical
Hubbell Industrial Controls, Inc
5935-00-204-5121 INTERCHANGEABLE
Connector,receptacle,electrical
5310-00-245-8825MS16228-4C INTERCHANGEABLE
Nut,self-Locking,hexagon
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5950-00-542-1326 INTERCHANGEABLE
Coil,radio Frequency
5950-00-782-0368 INTERCHANGEABLE
Transformer,radio Frequency
5985-01-027-8271247AS-C2558-001 INTERCHANGEABLE
Attenuator,fixed
Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
5110-01-131-7095PL-46C INTERCHANGEABLE
Pliers,diagonal Cutting
Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc
4730-01-146-59007Z588-9336 B INTERCHANGEABLE
Clamp,hose
Norma Pennsylvania Inc. Div Breeze Industrial Products
4210-01-167-54309336 INTERCHANGEABLE
Dry Chemical,fire Extinguisher
Tyco Fire Products Lp
5307-01-194-9315N66641 INTERCHANGEABLE
Stud,plain
Leslie Controls, Inc. Dba Leslie Controls Inc
Cross-Reference Index
Part NumberManufacturer
T-86131 Cummins Filtration Inc. (USA)
86131-M PRIMARY Cummins Filtration Inc. (USA)
9336 Stemco Inc Sub of Coltec Industries Inc (USA)
190-9336 PRIMARY Stemco Inc Sub of Coltec Industries Inc (USA)
DA35908-3 Hme, Inc. Dba Hme Ahrens-Fox (USA)
Related Parts
5999-00-012-9823INTERCHANGEABLE
CONTACT,ELECTRICAL
09336000
5935-00-204-5121INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
5310-00-245-8825INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
MS16228-4C
5950-00-542-1326INTERCHANGEABLE
COIL,RADIO FREQUENCY
5950-00-782-0368INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
5985-01-027-8271INTERCHANGEABLE
ATTENUATOR,FIXED
247AS-C2558-001
5110-01-131-7095INTERCHANGEABLE
PLIERS,DIAGONAL CUTTING
PL-46C
4730-01-146-5900INTERCHANGEABLE
CLAMP,HOSE
7Z588-9336 B
4210-01-167-5430INTERCHANGEABLE
DRY CHEMICAL,FIRE EXTINGUISHER
9336
5307-01-194-9315INTERCHANGEABLE
STUD,PLAIN
N66641
6810-01-434-6526INTERCHANGEABLE
SULFURIC ACID SOLUTION
9336
5110-01-434-9459INTERCHANGEABLE
PLIERS,DIAGONAL CUTTING

Frequently Asked Questions

What is NSN 2990-01-031-7251?

NSN 2990-01-031-7251 is a Muffler,exhaust, manufactured by Cummins Filtration Inc., classified under FSC 2990 (No Item Name Available). Status: active.

What are the part numbers for NSN 2990-01-031-7251?

NSN 2990-01-031-7251 has 5 cross-referenced part numbers: T-86131 (Cummins Filtration Inc.), 86131-M (Cummins Filtration Inc.), 9336 (Stemco Inc Sub of Coltec Industries Inc), 190-9336 (Stemco Inc Sub of Coltec Industries Inc), DA35908-3 (Hme, Inc. Dba Hme Ahrens-Fox).

What NSN replaces 2990-01-031-7251?

There are 12 known substitutes for 2990-01-031-7251: 5999-00-012-9823, 5935-00-204-5121, 5310-00-245-8825 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 86131-M?

Key specifications for 86131-M: Inlet Projection Length: 3.500 INCHES NOMINAL SINGLE INLET IN; Surface Treatment: ALUMINUM ALLOY; Inlet Outside Diameter: 4.000 INCHES NOMINAL SINGLE INLET IN; Outlet Connection Type: UNTHREADED FIRST OUTLET. 17 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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