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18378-N — MUFFLER,EXHAUST

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

18378-N: MUFFLER,EXHAUST.

The MUFFLER,EXHAUST is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING LOCATION NOT OTHERWISE SPECIFIED, body_shape: ROUND, design_type: DRY, coolant_type: AIR, inlet_location: CENTRALLY LOCATED IN END SECTION OF BODY, muffler_design: STRAIGHT THROUGH. This part is cataloged in the U.S.

Government catalog under NSN 2990-01-175-1393, 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
18378-N
NSN: 2990-01-175-1393
FSC: 2990 — Miscellaneous Engine Accessories, Nonaircraft
CAGE: 76700 — CUMMINS FILTRATION INC. (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING LOCATION NOT OTHERWISE SPECIFIED
body_shapeROUND
design_typeDRY
coolant_typeAIR
inlet_locationCENTRALLY LOCATED IN END SECTION OF BODY
muffler_designSTRAIGHT THROUGH
overall_length21.000 INCHES NOMINAL IN
overall_diameter6.100 INCHES NOMINAL IN
operating_positionHORIZONTAL
fsc_application_dataMISCELLANEOUS ENGINE ACCESSORIES,AIRCRAFT
inlet_connection_typeUNTHREADED SINGLE INLET
inlet_inside_diameter1.915 INCHES NOMINAL SINGLE INLET IN
NSN2990-01-175-1393
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available MUFFLER,EXHAUST TITLE COMPONENT PN 18378-N MFR MUFFLER,EXHAUST
KEY FEATURES
•
OPERATING POSITION: HORIZONTAL
•
FSC APPLICATION DATA: MISCELLANEOUS ENGINE ACCESSORIES,AIRCRAFT
•
INLET LOCATION: CENTRALLY LOCATED IN END SECTION OF BODY
•
COOLANT TYPE: AIR
•
DESIGN TYPE: DRY
•
OVERALL DIAMETER: 6.100 INCHES NOMINAL IN
•
INLET PROJECTION LENGTH: 2.000 INCHES NOMINAL SINGLE INLET IN
TECHNICAL CHARACTERISTICS
OPERATING POSITIONHORIZONTAL
FSC APPLICATION DATAMISCELLANEOUS ENGINE ACCESSORIES,AIRCRAFT
INLET LOCATIONCENTRALLY LOCATED IN END SECTION OF BODY
COOLANT TYPEAIR
DESIGN TYPEDRY
OVERALL DIAMETER6.100 INCHES NOMINAL IN
INLET PROJECTION LENGTH2.000 INCHES NOMINAL SINGLE INLET IN
OVERALL LENGTH21.000 INCHES NOMINAL IN
MUFFLER DESIGNSTRAIGHT THROUGH
INLET CONNECTION TYPEUNTHREADED SINGLE INLET
SUBSTITUTES & CROSS-REFERENCES 1
8141016-1Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 18378-N?
18378-N is a MUFFLER,EXHAUST.
What parts can replace 18378-N?
There is 1 known substitute for 18378-N: 8141016-1. Substitute compatibility should be verified for your specific system.
What is the NSN for 18378-N?
18378-N is cataloged in the U.S. Government catalog under NSN 2990-01-175-1393. 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.