PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

T-8114Muffler,exhaust

Cummins Filtration Inc. · NSN 2990-00-991-3631 · FSC 2990 · No Item Name Available
Verified by PartsTable
NSN 2990-00-991-3631 — this item is cataloged by the U.S. Government under National Stock Number 2990-00-991-3631. Primary manufacturer part number: T-8114.
Features
  • Muffler,exhaust — FSC 2990
  • Operating Position: UNIVERSAL
  • Baffle Quantity: 1
  • Design Type: DRY
  • Overall Diameter: 4.000 INCHES NOMINAL IN
  • Muffler Design: STRAIGHT THROUGH W/BAFFLE
  • Coolant Type: AIR
  • Inlet Inside Diameter: 1.775 INCHES NOMINAL SINGLE INLET IN
Applications
  • Applications requiring Steel Location Not Otherwise Specified construction
General Description

The Muffler,exhaust, cataloged under National Stock Number 2990-00-991-3631, 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 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN2990-00-991-3631
Primary Part NumberT-8114
Item NameMuffler,exhaust
FSC / FSG2990 / 29 — No Item Name Available
ManufacturerCummins Filtration Inc.
StatusACTIVE
Operating PositionUNIVERSAL
Baffle Quantity1
Design TypeDRY
Overall Diameter4.000 INCHES NOMINAL IN
Muffler DesignSTRAIGHT THROUGH W/BAFFLE
Coolant TypeAIR
Inlet Inside Diameter1.775 INCHES NOMINAL SINGLE INLET IN
Inlet LocationLOCATED ON SIDE OF BODY
Outlet Connection TypeUNTHREADED FIRST OUTLET
Inlet Connection TypeUNTHREADED SINGLE INLET
MaterialSTEEL LOCATION NOT OTHERWISE SPECIFIED
Body ShapeROUND
Outlet Outside Diameter1.750 INCHES NOMINAL FIRST OUTLET IN
Outlet LocationLOCATED ON SIDE OF BODY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
2930-00-346-54718114 INTERCHANGEABLE
Pump,cooling System,engine
Elgin Industries Inc. Dba
5961-00-378-40328-114 INTERCHANGEABLE
Transistor
Nextiraone Solutions Llc
4920-00-475-07668-1-1-4 INTERCHANGEABLE
Tie Down,trailer,th
Celtech Corporation Div Use CAGE 65552 for All Orders
4330-00-540-40017500501 INTERCHANGEABLE
Filter Element,fluid
Pti Technologies Inc.
5999-00-676-8452902361-1 INTERCHANGEABLE
Contact,electrical
The Boeing Company Div Defense
5331-00-844-32188114 INTERCHANGEABLE
O-Ring
Minnesota Rubber Co
5330-00-865-1997 INTERCHANGEABLE
Gasket
4240-01-022-77024118 INTERCHANGEABLE
Visor,faceshield,industrial
Fibre-Metal Products Co Inc
5998-01-091-5676 INTERCHANGEABLE
Circuit Card Assembly
5930-01-228-1527499-999-920 INTERCHANGEABLE
Switch,module
L3harris Interstate Electronics Corporation
Cross-Reference Index
Part NumberManufacturer
T-8114 PRIMARY Cummins Filtration Inc. (USA)
35A5296 White Farm Equipment Co Sub of Tic Investment Inc (USA)
ABT8114 Ar Bee Corp (USA)
8114 Cummins Filtration Inc. (USA)
Related Parts
2930-00-346-5471INTERCHANGEABLE
PUMP,COOLING SYSTEM,ENGINE
8114
5961-00-378-4032INTERCHANGEABLE
TRANSISTOR
8-114
4920-00-475-0766INTERCHANGEABLE
TIE DOWN,TRAILER,TH
8-1-1-4
4330-00-540-4001INTERCHANGEABLE
FILTER ELEMENT,FLUID
7500501
5999-00-676-8452INTERCHANGEABLE
CONTACT,ELECTRICAL
902361-1
5331-00-844-3218INTERCHANGEABLE
O-RING
8114
5330-00-865-1997INTERCHANGEABLE
GASKET
4240-01-022-7702INTERCHANGEABLE
VISOR,FACESHIELD,INDUSTRIAL
4118
5998-01-091-5676INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
5930-01-228-1527INTERCHANGEABLE
SWITCH,MODULE
499-999-920
8415-01-507-0699INTERCHANGEABLE
GLOVES,MEN'S
8114

Frequently Asked Questions

What is NSN 2990-00-991-3631?

NSN 2990-00-991-3631 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 2990-00-991-3631?

NSN 2990-00-991-3631 has 4 cross-referenced part numbers: T-8114 (Cummins Filtration Inc.), 35A5296 (White Farm Equipment Co Sub of Tic Investment Inc), ABT8114 (Ar Bee Corp), 8114 (Cummins Filtration Inc.).

What NSN replaces 2990-00-991-3631?

There are 11 known substitutes for 2990-00-991-3631: 2930-00-346-5471, 5961-00-378-4032, 4920-00-475-0766 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of T-8114?

Key specifications for T-8114: Overall Length: 14.500 INCHES NOMINAL IN; Operating Position: UNIVERSAL; Baffle Quantity: 1; Design Type: DRY. 15 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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