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4N7870 — MUFFLER,INTAKE

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

4N7870: MUFFLER,INTAKE.

The MUFFLER,INTAKE is a the manufacturer industrial component. Key specifications include body_shape: OVAL. This part is cataloged in the U.S.

Government catalog under NSN 2990-00-427-6904, 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
4N7870
NSN: 2990-00-427-6904
NIINs: 004276904, 010217587
FSC: 2990 — Miscellaneous Engine Accessories, Nonaircraft
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
body_shapeOVAL
NSN2990-00-427-6904
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available MUFFLER,INTAKE TITLE COMPONENT PN 4N7870 MFR MUFFLER,INTAKE
KEY FEATURES
•
OPERATING POSITION: UNIVERSAL
•
INLET OUTSIDE DIAMETER: 4.125 INCHES NOMINAL SINGLE INLET IN
•
INLET LOCATION: LOCATED ON HORIZONTAL CENTERLINE OF BODY
•
COOLANT TYPE: AIR
•
DESIGN TYPE: DRY
•
OUTLET INSIDE DIAMETER: 4.000 INCHES NOMINAL FIRST OUTLET IN
•
INLET PROJECTION LENGTH: 2.125 INCHES NOMINAL SINGLE INLET IN
TECHNICAL CHARACTERISTICS
OPERATING POSITIONUNIVERSAL
OVERALL HEIGHT6.375 INCHES NOMINAL IN
INLET OUTSIDE DIAMETER4.125 INCHES NOMINAL SINGLE INLET IN
INLET LOCATIONLOCATED ON HORIZONTAL CENTERLINE OF BODY
COOLANT TYPEAIR
DESIGN TYPEDRY
OUTLET INSIDE DIAMETER4.000 INCHES NOMINAL FIRST OUTLET IN
INLET PROJECTION LENGTH2.125 INCHES NOMINAL SINGLE INLET IN
OVERALL LENGTH27.250 INCHES NOMINAL IN
OVERALL WIDTH10.250 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 3
8S5034Reference document
Same NSN cross-reference
Reference document — Secondary reference
112-3249Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
MJM08-0047Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4N7870?
4N7870 is a MUFFLER,INTAKE.
What parts can replace 4N7870?
There are 3 known substitutes for 4N7870: 8S5034, 112-3249, MJM08-0047. Substitute compatibility should be verified for your specific system.
What is the NSN for 4N7870?
4N7870 is cataloged in the U.S. Government catalog under NSN 2990-00-427-6904. 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.