PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

T-11868Muffler,exhaust

Cummins Filtration Inc. · NSN 2990-00-088-9204 · FSC 2990 · No Item Name Available
Verified by PartsTable
NSN 2990-00-088-9204 — this item is cataloged by the U.S. Government under National Stock Number 2990-00-088-9204. Primary manufacturer part number: T-11868.
Features
  • Muffler,exhaust — FSC 2990
  • Inlet Location: ON SIDE OF BODY 2.530 IN. C TO END OF BODY,ON SIDE OF BODY 24.950 IN. C TO C OF INLETS IN
  • Inlet Inside Diameter: 3.015 INCHES NOMINAL SINGLE INLET IN
  • Design Type: DRY
  • Outlet Location: OFFSET IN END SECTION OF BODY 4.250 IN. C OF OUTLET TO C OF BODY IN
  • Outlet Outside Diameter: 3.625 INCHES NOMINAL FIRST OUTLET IN
  • Material: STEEL LOCATION NOT OTHERWISE SPECIFIED
  • Surface Treatment: ALUMINUM ALLOY
Applications
  • Applications requiring Steel Location Not Otherwise Specified construction
General Description

The Muffler,exhaust, cataloged under National Stock Number 2990-00-088-9204, 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 13 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
NSN2990-00-088-9204
Primary Part NumberT-11868
Item NameMuffler,exhaust
FSC / FSG2990 / 29 — No Item Name Available
ManufacturerCummins Filtration Inc.
StatusACTIVE
Inlet LocationON SIDE OF BODY 2.530 IN. C TO END OF BODY,ON SIDE OF BODY 24.950 IN. C TO C OF INLETS IN
Inlet Inside Diameter3.015 INCHES NOMINAL SINGLE INLET IN
Design TypeDRY
Outlet LocationOFFSET IN END SECTION OF BODY 4.250 IN. C OF OUTLET TO C OF BODY IN
Outlet Outside Diameter3.625 INCHES NOMINAL FIRST OUTLET IN
MaterialSTEEL LOCATION NOT OTHERWISE SPECIFIED
Surface TreatmentALUMINUM ALLOY
Tube Quantity5
Muffler DesignMULTIPASS
Inlet Projection Length3.000 INCHES NOMINAL SINGLE INLET IN
Outlet Projection Length7.000 INCHES NOMINAL FIRST OUTLET IN
Baffle Quantity2
Coolant TypeAIR
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3020-00-179-6872 INTERCHANGEABLE
Gear,spur
5977-00-234-9575103-5010 INTERCHANGEABLE
Brush,electrical Contact
Raytheon Company Dba Raytheon Co
5342-00-338-1881LC9250-1 INTERCHANGEABLE
Tip,protective
Src Elastomerics, Inc. Dba Src Elastomerics Inc Div Stockwell Elastomerics Inc
5136-00-370-4041 INTERCHANGEABLE
Tap,thread Cutting
4330-00-416-730622119 INTERCHANGEABLE
Ring,mounting
Fairbanks Morse, Llc
4720-00-448-7249 INTERCHANGEABLE
Hose,nonmetallic
5970-00-485-98441186-8-N INTERCHANGEABLE
Insulator,bushing
Matthew Warren, Inc Dba Raf Electronic Hardware Div Raf Electronic Hardware, Llc
4730-00-555-1764 INTERCHANGEABLE
Elbow,pipe to Tube
5315-00-704-924811868 INTERCHANGEABLE
Pin,detent,valve,hy
Eaton Aerospace Llc Dba Eaton Aerospace Jackson
4330-01-148-5467RK11868 INTERCHANGEABLE
Deflector Heat Assy
Parker-Hannifin Corporation Dba Racor Division Div Racor Division
Cross-Reference Index
Part NumberManufacturer
T-11868 PRIMARY Cummins Filtration Inc. (USA)
27Z528 Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/ (USA)
11868-N Cummins Filtration Inc. (USA)
11868 Cummins Filtration Inc. (USA)
ABT11868 Ar Bee Corp (USA)
Related Parts
3020-00-179-6872INTERCHANGEABLE
GEAR,SPUR
5977-00-234-9575INTERCHANGEABLE
BRUSH,ELECTRICAL CONTACT
103-5010
5342-00-338-1881INTERCHANGEABLE
TIP,PROTECTIVE
LC9250-1
5136-00-370-4041INTERCHANGEABLE
TAP,THREAD CUTTING
4330-00-416-7306INTERCHANGEABLE
RING,MOUNTING
22119
4720-00-448-7249INTERCHANGEABLE
HOSE,NONMETALLIC
5970-00-485-9844INTERCHANGEABLE
INSULATOR,BUSHING
1186-8-N
4730-00-555-1764INTERCHANGEABLE
ELBOW,PIPE TO TUBE
5315-00-704-9248INTERCHANGEABLE
PIN,DETENT,VALVE,HY
11868
4330-01-148-5467INTERCHANGEABLE
DEFLECTOR HEAT ASSY
RK11868
5910-01-163-8853INTERCHANGEABLE
CAPACITOR,FIXED,PAPER DIELECTRIC
5355-01-491-5661INTERCHANGEABLE
KNOB
11868

Frequently Asked Questions

What is NSN 2990-00-088-9204?

NSN 2990-00-088-9204 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 2990-00-088-9204?

NSN 2990-00-088-9204 has 5 cross-referenced part numbers: T-11868 (Cummins Filtration Inc.), 27Z528 (Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/), 11868-N (Cummins Filtration Inc.), 11868 (Cummins Filtration Inc.), ABT11868 (Ar Bee Corp).

What NSN replaces 2990-00-088-9204?

There are 12 known substitutes for 2990-00-088-9204: 3020-00-179-6872, 5977-00-234-9575, 5342-00-338-1881 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of T-11868?

Key specifications for T-11868: Inlet Location: ON SIDE OF BODY 2.530 IN. C TO END OF BODY,ON SIDE OF BODY 24.950 IN. C TO C OF INLETS IN; Inlet Inside Diameter: 3.015 INCHES NOMINAL SINGLE INLET IN; Design Type: DRY; Outlet Location: OFFSET IN END SECTION OF BODY 4.250 IN. C OF OUTLET TO C OF BODY 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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