11683943-1 — PISTON,INTERNAL COMBUSTION ENGIN

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

11683943-1: PISTON,INTERNAL COMBUSTION ENGIN.

PISTON,INTERNAL COMBUSTION ENGIN. Key specifications include weight: 126.3 OUNCES OZ, diameter: 5.695 INCHES MINIMUM AND 5.703 INCHES MAXIMUM IN, material: STEEL, oversize: 0.010 INCHES NOMINAL IN, cut_depth: 5.120 INCHES NOMINAL IN, head_style: DOME. This part is cataloged in the U.S.

Government catalog under NSN 2815-00-427-0551, 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

11683943-1

NSN: 2815-00-427-0551
FSC: 2815 — Diesel Engines and Components
CAGE: 0L7R7 — TECMOTIV (USA), INC. (USA)

SPECIFICATIONS

weight	126.3 OUNCES OZ
diameter	5.695 INCHES MINIMUM AND 5.703 INCHES MAXIMUM IN
material	STEEL
oversize	0.010 INCHES NOMINAL IN
cut_depth	5.120 INCHES NOMINAL IN
head_style	DOME
oil_groove	NOT INCLUDED
skirt_type	SEMISPLIT
carbon_groove	NOT INCLUDED
overall_height	6.870 INCHES NOMINAL IN
surface_finish	FINISHED
pin_hole_bushing	NOT INCLUDED
NSN	2815-00-427-0551

COMPONENT DIAGRAM

KEY FEATURES

•

CARBON GROOVE: NOT INCLUDED

•

RING GROOVE WIDTH: 0.0980 INCHES MINIMUM AND 0.0990 INCHES MAXIMUM THIRD RING IN

•

RETAINING RING GROOVE: NOT INCLUDED

•

SURFACE FINISH: FINISHED

TECHNICAL CHARACTERISTICS

OVERALL HEIGHT	6.870 INCHES NOMINAL IN
CARBON GROOVE	NOT INCLUDED
RING GROOVE WIDTH	0.0980 INCHES MINIMUM AND 0.0990 INCHES MAXIMUM THIRD RING IN
RING GROOVE WIDTH	0.0990 INCHES MINIMUM AND 0.1000 INCHES MAXIMUM SECOND RING IN
RING GROOVE WIDTH	0.0995 INCHES MINIMUM AND 0.1005 INCHES MAXIMUM FIRST RING IN
RING GROOVE WIDTH	0.1880 INCHES MINIMUM AND 0.0990 INCHES MAXIMUM FOURTH RING IN
RETAINING RING GROOVE	NOT INCLUDED
SURFACE FINISH	FINISHED
DIAMETER	5.695 INCHES MINIMUM AND 5.703 INCHES MAXIMUM IN
RING GROOVE DIAMETER	5.179 INCHES MINIMUM AND 1.189 INCHES MAXIMUM FOURTH RING IN

SUBSTITUTES & CROSS-REFERENCES 3

655216-1Reference document

Same NSN cross-reference

Reference document — Secondary reference

2815004270551Reference document

Same NSN cross-reference

Reference document — Informative reference only

11683943Reference document

Same NSN cross-reference

Reference document — Drawing number reference only

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is 11683943-1?

11683943-1 is a PISTON,INTERNAL COMBUSTION ENGIN.

What parts can replace 11683943-1?

There are 3 known substitutes for 11683943-1: 655216-1, 2815004270551, 11683943. Substitute compatibility should be verified for your specific system.

What is the NSN for 11683943-1?

11683943-1 is cataloged in the U.S. Government catalog under NSN 2815-00-427-0551. This indicates validated use in U.S. government and defense supply chains.

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11683943-1 — PISTON,INTERNAL COMBUSTION ENGIN

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