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277177C91 — MUFFLER,EXHAUST

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

277177C91: MUFFLER,EXHAUST.

The MUFFLER,EXHAUST is a the manufacturer industrial component. Key specifications include material: STEEL LOCATION NOT OTHERWISE SPECIFIED, body_shape: OVAL, design_type: DRY, coolant_type: AIR, overall_width: 15.000 INCHES NOMINAL IN, inlet_location: OFFSET IN END SECTION OF BODY. This part is cataloged in the U.S.

Government catalog under NSN 2990-00-248-4271, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
277177C91
NSN: 2990-00-248-4271
FSC: 2990 — Miscellaneous Engine Accessories, Nonaircraft
CAGE: 92679 — NAVISTAR INTL CORP MELROSE PARK ENGINE PLANT LOCATION /MELROSE PARK/ (USA)
SPECIFICATIONS
materialSTEEL LOCATION NOT OTHERWISE SPECIFIED
body_shapeOVAL
design_typeDRY
coolant_typeAIR
overall_width15.000 INCHES NOMINAL IN
tube_quantity2
inlet_locationOFFSET IN END SECTION OF BODY
muffler_designBAFFLE
overall_height10.000 INCHES NOMINAL IN
overall_length33.000 INCHES NOMINAL IN
baffle_quantity2
outlet_locationOFFSET IN END SECTION OF BODY
NSN2990-00-248-4271
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available MUFFLER,EXHAUST TITLE COMPONENT PN 277177C91 MFR MUFFLER,EXHAUST
KEY FEATURES
•
OPERATING POSITION: HORIZONTAL
•
INLET LOCATION: OFFSET IN END SECTION OF BODY
•
COOLANT TYPE: AIR
•
DESIGN TYPE: DRY
•
OUTLET INSIDE DIAMETER: 4.005 INCHES MINIMUM AND 4.045 INCHES MAXIMUM FIRST OUTLET IN
•
INLET PROJECTION LENGTH: 3.000 INCHES NOMINAL SINGLE INLET IN
•
BAFFLE QUANTITY: 2
TECHNICAL CHARACTERISTICS
OPERATING POSITIONHORIZONTAL
OVERALL HEIGHT10.000 INCHES NOMINAL IN
INLET LOCATIONOFFSET IN END SECTION OF BODY
COOLANT TYPEAIR
DESIGN TYPEDRY
OUTLET INSIDE DIAMETER4.005 INCHES MINIMUM AND 4.045 INCHES MAXIMUM FIRST OUTLET IN
INLET PROJECTION LENGTH3.000 INCHES NOMINAL SINGLE INLET IN
BAFFLE QUANTITY2
OVERALL LENGTH33.000 INCHES NOMINAL IN
OVERALL WIDTH15.000 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 3
884Reference document
Same NSN cross-reference
Reference document — Secondary reference
982Reference document
Same NSN cross-reference
Reference document — Secondary reference
86125-ASame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 277177C91?
277177C91 is a MUFFLER,EXHAUST.
What parts can replace 277177C91?
There are 3 known substitutes for 277177C91: 884, 982, 86125-A. Substitute compatibility should be verified for your specific system.
What is the NSN for 277177C91?
277177C91 is cataloged in the U.S. Government catalog under NSN 2990-00-248-4271. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.