AR55984 — PISTON,INTERNAL COMBUSTION ENGIN

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

AR55984: PISTON,INTERNAL COMBUSTION ENGIN.

PISTON,INTERNAL COMBUSTION ENGIN. Key specifications include weight: 32.0 OUNCES OZ, diameter: 4.250 INCHES NOMINAL IN, material: ALUMINUM, oversize: 0.010 INCHES NOMINAL IN, cut_depth: 0.430 INCHES NOMINAL IN, head_style: CAVITY. This part is cataloged in the U.S.

Government catalog under NSN 2815-01-192-8476, 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

AR55984

NSN: 2815-01-192-8476
FSC: 2815 — Diesel Engines and Components
CAGE: 75160 — DEERE & CO (USA)

SPECIFICATIONS

weight	32.0 OUNCES OZ
diameter	4.250 INCHES NOMINAL IN
material	ALUMINUM
oversize	0.010 INCHES NOMINAL IN
cut_depth	0.430 INCHES NOMINAL IN
head_style	CAVITY
oil_groove	NOT INCLUDED
skirt_type	SOLID
carbon_groove	NOT INCLUDED
overall_height	4.410 INCHES NOMINAL IN
surface_finish	FINISHED
pin_hole_bushing	INCLUDED
NSN	2815-01-192-8476

COMPONENT DIAGRAM

KEY FEATURES

•

CARBON GROOVE: NOT INCLUDED

•

RING GROOVE WIDTH: 0.2656 INCHES NOMINAL AND 0.2000 INCHES NOMINAL AND 0.2156 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN

•

DISTANCE BETWEEN PIN BOSSES: 3.9844 INCHES NOMINAL IN

•

RETAINING RING GROOVE: NOT INCLUDED

•

SURFACE FINISH: FINISHED

•

DIAMETER: 4.250 INCHES NOMINAL IN

•

RING GROOVE DIAMETER: 3.604 INCHES NOMINAL AND 3.640 INCHES NOMINAL AND 3.570 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN

TECHNICAL CHARACTERISTICS

OVERALL HEIGHT	4.410 INCHES NOMINAL IN
CARBON GROOVE	NOT INCLUDED
RING GROOVE WIDTH	0.2656 INCHES NOMINAL AND 0.2000 INCHES NOMINAL AND 0.2156 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
DISTANCE BETWEEN PIN BOSSES	3.9844 INCHES NOMINAL IN
RETAINING RING GROOVE	NOT INCLUDED
SURFACE FINISH	FINISHED
DIAMETER	4.250 INCHES NOMINAL IN
RING GROOVE DIAMETER	3.604 INCHES NOMINAL AND 3.640 INCHES NOMINAL AND 3.570 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
DISTANCE FROM PIN HOLE CENTER TO EXTREME TOP	1.880 INCHES NOMINAL IN
PIN	NOT INCLUDED

OTHER ITEMS IN FSC 2815 — Diesel Engines and Components

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

2815-00-011-9099 2815-00-017-1875 2815-00-024-4185 2815-00-033-1482 2815-00-036-5350 2815-00-179-7630 2815-00-346-4639 2815-00-592-5308

SUBSTITUTES & CROSS-REFERENCES 2

39065AReference document

Same NSN cross-reference

Reference document — Secondary reference

XVE4936D4Reference document

Same NSN cross-reference

Reference document — Design control — primary reference

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 AR55984?

AR55984 is a PISTON,INTERNAL COMBUSTION ENGIN.

What parts can replace AR55984?

There are 2 known substitutes for AR55984: 39065A, XVE4936D4. Substitute compatibility should be verified for your specific system.

What is the NSN for AR55984?

AR55984 is cataloged in the U.S. Government catalog under NSN 2815-01-192-8476. This indicates validated use in U.S. government and defense supply chains.

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AR55984 — PISTON,INTERNAL COMBUSTION ENGIN

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