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1968-1974 GMC C15/C1500 Pickup Automatic Extension Housing Seal - National SX-NAMJ

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National automatic transmission extension housing seal (MPN: SX-NAMJ) for GMC C15/C1500 pickups, 1968–1974 — direct replacement.

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BrandNational
MPN / Part NumberSX-NAMJ 1974 1973 1972 1971 1970 1969
OE NumberTimken SKF C449 VEMO King 46-57
Part TypeAutomatic Transmission Extension Housing Seal
PositionTransmission extension housing
TransmissionAutomatic

Product Description

National extension housing seal designed as a direct replacement for automatic transmissions in GMC C15/C1500 pickup trucks from 1968 through 1974. Supplied as a single piece and intended to restore sealing at the transmission extension housing. Matches several interchange references listed by the manufacturer.

Product Specifications

BrandNational
TypeAutomatic Transmission Extension Housing Seal
Manufacturer Part NumberSX-NAMJ 1974 1973 1972 1971 1970 1969
Manufacturer Warranty1 Year
Interchange Part NumberTimken SKF C449 VEMO King 46-57
Placement on VehicleTransmission > Gaskets Sealing Systems
Compatible MakeGMC
Compatible ModelC15/C1500 Pickup
Compatible Year1974 1973 1972 1971 1970 1969 1968
Core ChargeFree - No Core Charge
Fitment TypeDirect Replacement
Bundle Description1 pc National Extension Housing Seal
UPCDoes not apply
Country of OriginUnited States
Manufacturer Warranty1 Year
Interchange Part NumberTimken; SKF; C449; VEMO; King 46-57
Fitment TypeDirect Replacement
Bundle Description1 pc National Extension Housing Seal
Core ChargeFree - No Core Charge
Country of OriginUnited States
UPCDoes not apply

Vehicle Fitment

YearMakeModelEngineTrimTransmission
1968GMCC15/C1500 PickupAutomatic
1969GMCC15/C1500 PickupAutomatic
1970GMCC15/C1500 PickupAutomatic
1971GMCC15/C1500 PickupAutomatic
1972GMCC15/C1500 PickupAutomatic
1973GMCC15/C1500 PickupAutomatic
1974GMCC15/C1500 PickupAutomatic

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