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GC3921R1 — GOVERNOR,GASOLINE ENGINE

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

GC3921R1: GOVERNOR,GASOLINE ENGINE.

The GOVERNOR,GASOLINE ENGINE is a the manufacturer industrial component. Key specifications include drive_type: PULLEY, specific_use: WILLYS OVERLAND MOTORS INC,ENGINE MODEL MB, governor_type: CENTRIFUGAL, mounting_type: FLANGE, spark_control: NOT INCLUDED, drive_shaft_type: PINNED. This part is cataloged in the U.S.

Government catalog under NSN 2990-00-248-9270, 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
GC3921R1
NSN: 2990-00-248-9270
FSC: 2990 — Miscellaneous Engine Accessories, Nonaircraft
CAGE: 77260 — PIERCE CO INC THE SUB OF AVIS INDUSTRIAL CORP (USA)
SPECIFICATIONS
drive_typePULLEY
specific_useWILLYS OVERLAND MOTORS INC,ENGINE MODEL MB
governor_typeCENTRIFUGAL
mounting_typeFLANGE
spark_controlNOT INCLUDED
drive_shaft_typePINNED
hydraulic_controlNOT INCLUDED
speed_control_typeCONSTANT
lever_for_manual_operationNOT INCLUDED
NSN2990-00-248-9270
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available GOVERNOR,GASOLINE ENGINE TITLE COMPONENT PN GC3921R1 MFR GOVERNOR,GASOLINE ENGI
KEY FEATURES
•
DRIVE TYPE: PULLEY
•
GOVERNOR TYPE: CENTRIFUGAL
•
HYDRAULIC CONTROL: NOT INCLUDED
•
SPARK CONTROL: NOT INCLUDED
•
DRIVE SHAFT TYPE: PINNED
•
SPECIFIC USE: WILLYS OVERLAND MOTORS INC,ENGINE MODEL MB
•
SPEED CONTROL TYPE: CONSTANT
•
MOUNTING TYPE: FLANGE
TECHNICAL CHARACTERISTICS
DRIVE TYPEPULLEY
GOVERNOR TYPECENTRIFUGAL
HYDRAULIC CONTROLNOT INCLUDED
SPARK CONTROLNOT INCLUDED
DRIVE SHAFT TYPEPINNED
SPECIFIC USEWILLYS OVERLAND MOTORS INC,ENGINE MODEL MB
SPEED CONTROL TYPECONSTANT
MOUNTING TYPEFLANGE
LEVER FOR MANUAL OPERATIONNOT INCLUDED
SUBSTITUTES & CROSS-REFERENCES 6
151-155Reference document
Same NSN cross-reference
Reference document — Secondary reference
151-47Reference document
Same NSN cross-reference
Reference document — Secondary reference
121581Reference document
Same NSN cross-reference
Reference document — Secondary reference
151C155Reference document
Same NSN cross-reference
Reference document — Secondary reference
8328237Reference document
Same NSN cross-reference
Reference document — Secondary reference
GC-3921R2Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is GC3921R1?
GC3921R1 is a GOVERNOR,GASOLINE ENGINE.
What parts can replace GC3921R1?
There are 6 known substitutes for GC3921R1: 151-155, 151-47, 121581 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for GC3921R1?
GC3921R1 is cataloged in the U.S. Government catalog under NSN 2990-00-248-9270. 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.