PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

T-86125Muffler,exhaust

Cummins Filtration Inc. · NSN 2990-00-248-4271 · FSC 2990 · No Item Name Available
Verified by PartsTable
NSN 2990-00-248-4271 — this item is cataloged by the U.S. Government under National Stock Number 2990-00-248-4271. Primary manufacturer part number: T-86125.
Features
  • Muffler,exhaust — FSC 2990
  • Body Shape: OVAL
  • Outlet Projection Length: 3.000 INCHES NOMINAL FIRST OUTLET IN
  • Tube Quantity: 2
  • Inlet Location: OFFSET IN END SECTION OF BODY
  • Surface Treatment: ALUMINUM ALLOY
  • Inlet Inside Diameter: 4.005 INCHES MINIMUM AND 4.045 INCHES MAXIMUM SINGLE INLET IN
  • Material: STEEL LOCATION NOT OTHERWISE SPECIFIED
Applications
  • Applications requiring Steel Location Not Otherwise Specified construction
General Description

The Muffler,exhaust, cataloged under National Stock Number 2990-00-248-4271, 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 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 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
NSN2990-00-248-4271
Primary Part NumberT-86125
Item NameMuffler,exhaust
FSC / FSG2990 / 29 — No Item Name Available
ManufacturerCummins Filtration Inc.
StatusACTIVE
Body ShapeOVAL
Outlet Projection Length3.000 INCHES NOMINAL FIRST OUTLET IN
Tube Quantity2
Inlet LocationOFFSET IN END SECTION OF BODY
Surface TreatmentALUMINUM ALLOY
Inlet Inside Diameter4.005 INCHES MINIMUM AND 4.045 INCHES MAXIMUM SINGLE INLET IN
MaterialSTEEL LOCATION NOT OTHERWISE SPECIFIED
Design TypeDRY
Outlet Connection TypeUNTHREADED FIRST OUTLET
Outlet LocationOFFSET IN END SECTION OF BODY
Coolant TypeAIR
Baffle Quantity2
Inlet Projection Length3.000 INCHES NOMINAL SINGLE INLET IN
Outlet Inside Diameter4.005 INCHES MINIMUM AND 4.045 INCHES MAXIMUM FIRST OUTLET IN
Inlet Connection TypeUNTHREADED SINGLE INLET
Operating PositionHORIZONTAL
Muffler DesignBAFFLE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4720-00-202-6716 INTERCHANGEABLE
Hose Assembly,nonmetallic
4320-00-218-2310134 INTERCHANGEABLE
Impeller,pump,centrifugal
Industrial Technologies and Services Llc
4730-00-254-62151102-9 INTERCHANGEABLE
Elbow,pipe to Tube
Barnes Group Inc. Dba Barnes Distribution
2520-00-352-21685-92X INTERCHANGEABLE
Spider,universal Joint,vehicular
Dana Corp Spicer Transmission Div
2930-00-375-0265641016 INTERCHANGEABLE
Radiator
Clark Material Handling Company
5310-00-431-728121174 INTERCHANGEABLE
Nut,plain,hexagon
Dresser, Llc
3120-00-432-407521174 INTERCHANGEABLE
Roller,tape Guide
Drs C3 & Aviation Company Dba Drs Data & Imaging Systems
5342-00-514-30567439075 INTERCHANGEABLE
Mount,resilient,weapon System
The Boeing Company
6625-00-949-1306982 INTERCHANGEABLE
Adapter,illuminato
Monocle Industries Inc
5330-01-069-5180982 INTERCHANGEABLE
Gasket
Q V S Inc
Cross-Reference Index
Part NumberManufacturer
T-86125 PRIMARY Cummins Filtration Inc. (USA)
277177C91 Navistar International Corporation Dba Navistar (USA)
277177C91 Navistar Intl Corp Truck Br Ohio Plant (USA)
277177C91 PRIMARY Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/ (USA)
884 De Koven Mfg Co (USA)
982 Walker Mfg Co (USA)
21174 PRIMARY Walker Mfg Co (USA)
86125-A Cummins Filtration Inc. (USA)
Related Parts
4720-00-202-6716INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
4320-00-218-2310INTERCHANGEABLE
IMPELLER,PUMP,CENTRIFUGAL
134
4730-00-254-6215INTERCHANGEABLE
ELBOW,PIPE TO TUBE
1102-9
2520-00-352-2168INTERCHANGEABLE
SPIDER,UNIVERSAL JOINT,VEHICULAR
5-92X
2930-00-375-0265INTERCHANGEABLE
RADIATOR
641016
5310-00-431-7281INTERCHANGEABLE
NUT,PLAIN,HEXAGON
21174
3120-00-432-4075INTERCHANGEABLE
ROLLER,TAPE GUIDE
21174
5342-00-514-3056INTERCHANGEABLE
MOUNT,RESILIENT,WEAPON SYSTEM
7439075
6625-00-949-1306INTERCHANGEABLE
ADAPTER,ILLUMINATO
982
5330-01-069-5180INTERCHANGEABLE
GASKET
982
5950-01-074-3938INTERCHANGEABLE
COIL,RADIO FREQUENCY
21174
5998-01-097-8509INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
21174

Frequently Asked Questions

What is NSN 2990-00-248-4271?

NSN 2990-00-248-4271 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 2990-00-248-4271?

NSN 2990-00-248-4271 has 8 cross-referenced part numbers: T-86125 (Cummins Filtration Inc.), 277177C91 (Navistar International Corporation Dba Navistar), 277177C91 (Navistar Intl Corp Truck Br Ohio Plant), 277177C91 (Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/), 884 (De Koven Mfg Co) and 3 more.

What NSN replaces 2990-00-248-4271?

There are 12 known substitutes for 2990-00-248-4271: 4720-00-202-6716, 4320-00-218-2310, 4730-00-254-6215 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of T-86125?

Key specifications for T-86125: Overall Height: 10.000 INCHES NOMINAL IN; Body Shape: OVAL; Outlet Projection Length: 3.000 INCHES NOMINAL FIRST OUTLET IN; Tube Quantity: 2. 21 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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