Product Description
National extension housing seal (part number SX-3165) designed for automatic transmissions on GMC C25 trucks from 1975 through 1978. Direct replacement sealing component supplied as a single piece. Matches the listed interchange references (Timken/SKF C173, VEMO, King 33-23).
Product Specifications
BrandNational
TypeAutomatic Transmission Extension Housing Seal
Manufacturer Part NumberSX-3165 1978 1977 1976 1975 Automatic
Manufacturer Warranty1 Year
Interchange Part NumberTimken SKF C173 VEMO King 33-23
Placement on VehicleTransmission > Gaskets Sealing Systems
Compatible MakeGMC
Compatible ModelC25
Compatible Year1978 1977 1976 1975
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 C173 VEMO King 33-23
Fitment TypeDirect Replacement
Bundle Description1 pc National Extension Housing Seal
Core ChargeFree - No Core Charge
UPCDoes not apply
Country of OriginUnited States
Vehicle Fitment
Always compare the part number and listed specifications with your original part before ordering.