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National 9406S Wheel Seal - Front InnerOE Quality 60-Day Returns
Part #: 9406S

National 9406S Wheel Seal - Front Inner

Front Inner
39 vehicles fit this part
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Fitment: Cadillac, Chevrolet, and Pontiac, Bel Air, Caprice, Commercial Chassis, Corvette, DeVille, Fleetwood, Impala, Laurentian, and Parisienne
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National 9406S Wheel Seal for Front Inner Applications

The National 9406S wheel seal is a front inner oil seal built for select Chevrolet, Cadillac, and Pontiac applications. It uses nitrile construction and precise inch-based dimensions to support a proper seal at the shaft and housing bore.

  • Part number: 9406S
  • Part description: oil seal / wheel seal
  • Material: nitrile
  • Inside diameter: 2.000 in. / 50.800 mm
  • Outside diameter: 2.629 in. / 66.780 mm
  • Housing bore: 2.625 in. / 66.680 mm
  • Width: 0.285 in. / 7.240 mm
  • Series: 9000
  • Unit of dimension: inch

Fitment Details

Compatible With front inner wheel seal applications on classic GM vehicles, including Fits 1969-1982 Chevrolet Corvette, Front Inner; Fits 1969-1971 Cadillac DeVille, Front Inner; Fits 1969-1971 Cadillac Fleetwood, Front Inner; Fits 1969-1970 Chevrolet Bel Air, Front Inner; Fits 1969-1970 Chevrolet Caprice, Front Inner; Fits 1969-1970 Chevrolet Impala, Front Inner; Fits 1969-1970 Pontiac Laurentian, Front Inner; and Fits 1969-1970 Pontiac Parisienne, Front Inner.

National 9406S is also listed for 1968 Cadillac, Chevrolet, and Pontiac front inner disc brake applications, including Cadillac Commercial Chassis, DeVille, Fleetwood, Chevrolet Bel Air, Caprice, Impala, Pontiac Laurentian, and Pontiac Parisienne.

What This Seal Helps Address

  • Oil leakage at the wheel end
  • Contamination entering the hub or bearing area
  • Wear from an aged or hardened seal lip
  • Loss of sealing performance during brake or hub service
  • Fitment issues when replacing a worn front inner seal on classic GM vehicles

Installation Notes and Tips

Verify shaft diameter, housing bore, and width before installation. Clean the sealing surface and inspect the hub, spindle, and bearing area for scoring or corrosion. For 1968 applications, confirm the vehicle is equipped with disc brakes, as noted in the fitment data. Use the exact position listed for the vehicle: front inner.

Quality Assurance

National has supplied sealing solutions for more than 75 years and continues to develop sealing components for modern and legacy vehicles. This part cross-references Febi-Bilstein 19768 and Four Seasons 64068 for the same application.

BrandNational
Part Number9406S
Inside Diameter2.000
Inside Diameter50.800
Outside Diameter2.629
Outside Diameter66.780
Housing Bore (Inch)2.625
Housing Bore (MM)66.680
MaterialNitrile
Outside Diameter (Inch)2.629
Outside Diameter (mm)66.780
Part DescriptionOil seal
Series9000
Shaft (Inch)2.000
Shaft (MM)50.800
Type279
Unit of DimensionInch
Width (Inch)0.285
Width (mm)7.240

This part fits 39 vehicles. Search below:

YearMakeModelPositionNotes
1982ChevroletCorvetteFront Inner
1981ChevroletCorvetteFront Inner
1980ChevroletCorvetteFront Inner
1979ChevroletCorvetteFront Inner
1978ChevroletCorvetteFront Inner
1977ChevroletCorvetteFront Inner
1976ChevroletCorvetteFront Inner
1975ChevroletCorvetteFront Inner
1974ChevroletCorvetteFront Inner
1973ChevroletCorvetteFront Inner
1972ChevroletCorvetteFront Inner
1971CadillacDeVilleFront Inner
1971CadillacFleetwoodFront Inner
1971ChevroletCorvetteFront Inner
1970CadillacDeVilleFront Inner
1970CadillacFleetwoodFront Inner
1970ChevroletBel AirFront Inner
1970ChevroletCapriceFront Inner
1970ChevroletCorvetteFront Inner
1970ChevroletImpalaFront Inner
1970PontiacLaurentianFront Inner
1970PontiacParisienneFront Inner
1969CadillacCommercial ChassisFront Inner
1969CadillacDeVilleFront Inner
1969CadillacFleetwoodFront Inner
1969ChevroletBel AirFront Inner
1969ChevroletCapriceFront Inner
1969ChevroletCorvetteFront Inner
1969ChevroletImpalaFront Inner
1969PontiacLaurentianFront Inner
1969PontiacParisienneFront Inner
1968CadillacCommercial ChassisFront InnerCompatible with vehicles equipped with disc brakes.
1968CadillacDeVilleFront InnerCompatible with vehicles equipped with disc brakes.
1968CadillacFleetwoodFront InnerCompatible with vehicles equipped with disc brakes.
1968ChevroletBel AirFront InnerCompatible with vehicles equipped with disc brakes.
1968ChevroletCapriceFront InnerCompatible with vehicles equipped with disc brakes.
1968ChevroletImpalaFront InnerCompatible with vehicles equipped with disc brakes.
1968PontiacLaurentianFront InnerCompatible with vehicles equipped with disc brakes.
1968PontiacParisienneFront InnerCompatible with vehicles equipped with disc brakes.

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

1230390714888831494465197682620403290-893953412417.6200852-21-0410640689406ST3911

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.