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1954-1959 GMC M300 Front Engine Crankshaft Repair Sleeve - National SX-MM50

1954-1959 GMC M300 Front Engine Crankshaft Repair Sleeve - National SX-MM50

$55.22
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National front engine crankshaft repair sleeve (SX-MM50) for 1954–1959 GMC M300. Direct replacement repair sleeve, position: front.

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BrandNational
MPN / Part NumberSX-MM50 1959 1958 1957 1956 1955 1954
OE NumberTimken SKF C421 VEMO King 80-21
Part TypeEngine Crankshaft Repair Sleeve
PositionFront

Product Description

National Engine Crankshaft Repair Sleeve, front position, part number SX-MM50 (listed with years 1954–1959). Designed as a direct replacement for GMC M300 models from 1954 through 1959. Includes interchange references: Timken, SKF, C421, VEMO, King 80-21.

Product Specifications

BrandNational
TypeEngine Crankshaft Repair Sleeve
Manufacturer Part NumberSX-MM50 1959 1958 1957 1956 1955 1954
Manufacturer Warranty1 Year
Interchange Part NumberTimken SKF C421 VEMO King 80-21
Placement on VehicleEngine > Hardware Fasteners Fittings
Compatible MakeGMC
Compatible ModelM300
Compatible Year1959 1958 1957 1956 1955 1954
Core ChargeFree - No Core Charge
PositionFront
Fitment TypeDirect Replacement
Bundle Description1 pc Genuine National Engine Crankshaft Repair Sleeve
UPCDoes not apply
Country of OriginUnited States
Manufacturer Warranty1 Year
Placement on VehicleEngine > Hardware Fasteners Fittings
Core ChargeFree - No Core Charge
Fitment TypeDirect Replacement
Bundle Description1 pc Genuine National Engine Crankshaft Repair Sleeve
UPCDoes not apply
Country of OriginUnited States

Vehicle Fitment

YearMakeModelEngineTrimTransmission
1954GMCM300
1955GMCM300
1956GMCM300
1957GMCM300
1958GMCM300
1959GMCM300

Always compare the part number and listed specifications with your original part before ordering.

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