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National 8974S Wheel Seal - Front InnerOE Quality 60-Day Returns
Part #: 8974S

National 8974S Wheel Seal - Front Inner

Front Inner
232 vehicles fit this part
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Fitment: Workhorse, Chevrolet, and GMC, P30, C2500, C3500, G20, G30, R2500 Suburban, R3500, G2500, G3500, P3500, P20, R2500, P2500, R20, R20 Suburban, R30, C20, C20 Suburban, C30, C2500 Suburban, C25, C25 Suburban, C35, G35, P25, P35, C20 Pickup, C30 Pickup, G20 Van, G30 Van, P20 Van, P30 Van, C25/C2500 Pickup, C25/C2500 Suburban, C35/C3500 Pickup, G35/G3500 Van, P25/P2500 Van, P35/P3500 Van, G25/G2500 Van, C10 Pickup, C10 Suburban, C15/C1500 Pickup, C15/C1500 Suburban, P15/P1500 Van, C20 Panel, C30 Panel, 2500, I2500, P1000, PB15 Series, PB25 Series, PB2500 Van, PB3500 Van, 1500 Series, 2500 Series, PB1500 Series, and PB2500 Series
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Overview of National 8974S Wheel Seal

The National 8974S wheel seal is engineered to provide reliable sealing performance for driveline components. Designed specifically for Chevrolet and GMC trucks and vans, this oil seal helps maintain proper lubrication and prevent contamination in wheel hubs.

  • Inside diameter: 2.180 inches (55.370 mm)
  • Outside diameter: 3.005 inches (76.330 mm)
  • Width: 0.495 inches (12.570 mm)
  • Material: durable nitrile rubber for resistance to oil and wear
  • Compatible with Chevrolet and GMC C10, C20, C30, Suburban, and P-series models

Detailed Product Description

The National 8974S wheel seal is part of the 8000 series and is constructed from nitrile, a material known for its excellent resistance to oil, heat, and abrasion. With an inside diameter of 2.180 inches and an outside diameter of 3.005 inches, this seal fits precisely within a 3.000 inch (76.200 mm) housing bore. Its 0.495 inch width ensures a secure fit to prevent leaks and contamination in the wheel hub assembly. The seal’s design supports the driveline and axle systems of Chevrolet and GMC vehicles, including models such as the C10 Suburban, C20, C2500, G20, P20, and R2500 Suburban.

Compatible Vehicles and Applications

This wheel seal is compatible with a range of Chevrolet and GMC trucks and vans, including:

  • Chevrolet C10 Suburban, C20, C20 Suburban, C30, C2500, C2500 Suburban, C3500
  • GMC G20, G30, P20, P30, P2500, P3500
  • GMC R20, R20 Suburban, R30, R2500, R2500 Suburban, R3500

Common Issues Addressed by the National 8974S Wheel Seal

  • Prevents oil leaks from wheel hubs
  • Protects bearings from dirt and moisture contamination
  • Maintains proper lubrication within axle assemblies
  • Reduces premature wear of driveline components
  • Helps avoid costly repairs due to seal failure

Installation Notes and Tips

Ensure the housing bore and shaft surfaces are clean and free of debris before installation. Use appropriate tools to press the seal evenly into the bore without distortion. Verify the seal’s orientation matches the original part to maintain proper sealing function. Lubricate the seal lip lightly with clean oil to reduce initial wear during startup.

Quality Assurance and Warranty

National wheel seals are manufactured to meet OEM specifications for fit and function. The 8974S seal undergoes rigorous quality control to ensure durability and performance in demanding automotive environments. While specific warranty terms may vary, National products typically include coverage against manufacturing defects to provide confidence in your replacement part.

BrandNational
Part Number8974S
Housing Bore (Inch)3.000
Housing Bore (MM)76.200
Inside Diameter2.180
Inside Diameter55.370
MaterialNitrile
Outside Diameter3.005
Outside Diameter76.330
Outside Diameter (Inch)3.005
Outside Diameter (mm)76.330
Part DescriptionOil Seal
Series8000
Shaft (Inch)2.180
Shaft (MM)55.370
Type49
Unit of DimensionInch
Width (Inch)0.495
Width (mm)12.570

This part fits 232 vehicles. Search below:

YearMakeModelPositionNotes
1991ChevroletC2500Front Innerwith Heavy Duty Brakes
1991ChevroletC3500Front Inner
1991ChevroletG20Front Innerwith Heavy Duty Brakes
1991ChevroletG30Front Inner
1991ChevroletR2500 SuburbanFront Inner
1991ChevroletR3500Front Inner
1991GMCC2500Front Innerwith Heavy Duty Brakes
1991GMCC3500Front Inner
1991GMCG2500Front Innerwith Heavy Duty Brakes
1991GMCG3500Front Inner
1991GMCR2500 SuburbanFront Inner
1991GMCR3500Front Inner
1990ChevroletC2500Front Innerwith Heavy Duty Brakes
1990ChevroletC3500Front Inner
1990ChevroletG20Front Innerwith Heavy Duty Brakes
1990ChevroletG30Front Inner
1990ChevroletP30Front InnerExcept I-Beam Axle
1990ChevroletR2500 SuburbanFront Inner
1990ChevroletR3500Front Inner
1990GMCC2500Front Innerwith Heavy Duty Brakes
1990GMCC3500Front Inner
1990GMCG2500Front Innerwith Heavy Duty Brakes
1990GMCG3500Front Inner
1990GMCP3500Front InnerExcept I-Beam Axle
1990GMCR2500 SuburbanFront Inner
1990GMCR3500Front Inner
1989ChevroletC2500Front Innerwith Heavy Duty Brakes
1989ChevroletC3500Front Inner
1989ChevroletG20Front Innerwith Heavy Duty Brakes
1989ChevroletG30Front Inner
1989ChevroletP20Front Inner
1989ChevroletP30Front InnerExcept I-Beam Axle
1989ChevroletR2500Front Inner
1989ChevroletR2500 SuburbanFront Inner
1989ChevroletR3500Front Inner
1989GMCC2500Front Innerwith Heavy Duty Brakes
1989GMCC3500Front Inner
1989GMCG2500Front Innerwith Heavy Duty Brakes
1989GMCG3500Front Inner
1989GMCP2500Front Inner
1989GMCP3500Front InnerExcept I-Beam Axle
1989GMCR2500Front Inner
1989GMCR2500 SuburbanFront Inner
1989GMCR3500Front Inner
1988ChevroletC2500Front Innerwith Heavy Duty Brakes
1988ChevroletC3500Front Inner
1988ChevroletG20Front Innerwith Heavy Duty Brakes
1988ChevroletG30Front Inner
1988ChevroletP20Front Inner
1988ChevroletP30Front InnerExcept I-Beam Axle
1988ChevroletR20Front Inner
1988ChevroletR20 SuburbanFront Inner
1988ChevroletR30Front Inner
1988GMCC2500Front Innerwith Heavy Duty Brakes
1988GMCC3500Front Inner
1988GMCG2500Front Innerwith Heavy Duty Brakes
1988GMCG3500Front Inner
1988GMCP2500Front Inner
1988GMCP3500Front InnerExcept I-Beam Axle
1988GMCR2500Front Inner
1988GMCR2500 SuburbanFront Inner
1988GMCR3500Front Inner
1987ChevroletG20Front Innerwith Heavy Duty Brakes
1987ChevroletG30Front Inner
1987ChevroletP20Front Inner
1987ChevroletP30Front InnerExcept I-Beam Axle
1987ChevroletR20Front Inner
1987ChevroletR20 SuburbanFront Inner
1987ChevroletR30Front Inner
1987GMCG2500Front Innerwith Heavy Duty Brakes
1987GMCG3500Front Inner
1987GMCP2500Front Inner
1987GMCP3500Front InnerExcept I-Beam Axle
1987GMCR2500Front Inner
1987GMCR2500 SuburbanFront Inner
1987GMCR3500Front Inner
1986ChevroletC20Front Inner
1986ChevroletC20 SuburbanFront Inner
1986ChevroletC30Front Inner
1986ChevroletG20Front Innerwith Heavy Duty Brakes
1986ChevroletG30Front Inner
1986ChevroletP20Front Inner
1986ChevroletP30Front InnerExcept I-Beam Axle
1986GMCC2500Front Inner
1986GMCC2500 SuburbanFront Inner
1986GMCC3500Front Inner
1986GMCG2500Front Innerwith Heavy Duty Brakes
1986GMCG3500Front Inner
1986GMCP2500Front Inner
1986GMCP3500Front InnerExcept I-Beam Axle
1985ChevroletC20Front Inner
1985ChevroletC20 SuburbanFront Inner
1985ChevroletC30Front Inner
1985ChevroletG20Front Innerwith Heavy Duty Brakes
1985ChevroletG30Front Inner
1985ChevroletP20Front Inner
1985ChevroletP30Front InnerExcept I-Beam Axle
1985GMCC2500Front Inner
1985GMCC2500 SuburbanFront Inner
1985GMCC3500Front Inner
1985GMCG2500Front Innerwith Heavy Duty Brakes
1985GMCG3500Front Inner
1985GMCP2500Front Inner
1985GMCP3500Front InnerExcept I-Beam Axle
1984ChevroletC20Front Inner
1984ChevroletC20 SuburbanFront Inner
1984ChevroletC30Front Inner
1984ChevroletG20Front Innerwith Heavy Duty Brakes
1984ChevroletG30Front Inner
1984ChevroletP20Front Inner
1984ChevroletP30Front Inner
1984GMCC2500Front Inner
1984GMCC2500 SuburbanFront Inner
1984GMCC3500Front Inner
1984GMCG2500Front Innerwith Heavy Duty Brakes
1984GMCG3500Front Inner
1984GMCP2500Front Inner
1984GMCP3500Front Inner
1983ChevroletC20Front Inner
1983ChevroletC20 SuburbanFront Inner
1983ChevroletC30Front Inner
1983ChevroletG20Front Innerwith Heavy Duty Brakes
1983ChevroletG30Front Inner
1983ChevroletP20Front Inner
1983ChevroletP30Front Inner
1983GMCC2500Front Inner
1983GMCC2500 SuburbanFront Inner
1983GMCC3500Front Inner
1983GMCG2500Front Innerwith Heavy Duty Brakes
1983GMCG3500Front Inner
1983GMCP2500Front Inner
1983GMCP3500Front Inner
1982ChevroletC20Front Inner
1982ChevroletC20 SuburbanFront Inner
1982ChevroletC30Front Inner
1982ChevroletG30Front Inner
1982ChevroletP20Front Inner
1982ChevroletP30Front Inner
1982GMCC2500Front Inner
1982GMCC2500 SuburbanFront Inner
1982GMCC3500Front Inner
1982GMCG3500Front Inner
1982GMCP2500Front Inner
1982GMCP3500Front Inner
1981ChevroletC20Front Inner
1981ChevroletC20 SuburbanFront Inner
1981ChevroletC30Front Inner
1981ChevroletG30Front Inner
1981ChevroletP20Front Inner
1981ChevroletP30Front Inner
1981GMCC2500Front Inner
1981GMCC2500 SuburbanFront Inner
1981GMCC3500Front Inner
1981GMCG3500Front Inner
1981GMCP2500Front Inner
1981GMCP3500Front Inner
1980ChevroletC20Front Inner
1980ChevroletC20 SuburbanFront Inner
1980ChevroletC30Front Inner
1980ChevroletG30Front Inner
1980ChevroletP20Front Inner
1980ChevroletP30Front Inner
1980GMCC2500Front Inner
1980GMCC2500 SuburbanFront Inner
1980GMCC3500Front Inner
1980GMCG3500Front Inner
1980GMCP2500Front Inner
1980GMCP3500Front Inner
1979ChevroletC20Front Inner
1979ChevroletC20 SuburbanFront Inner
1979ChevroletC30Front Inner
1979ChevroletG30Front Inner
1979ChevroletP20Front Inner
1979ChevroletP30Front Inner
1979GMCC2500Front Inner
1979GMCC2500 SuburbanFront Inner
1979GMCC3500Front Inner
1979GMCG3500Front Inner
1979GMCP2500Front Inner
1979GMCP3500Front Inner
1978ChevroletC20Front Inner
1978ChevroletC20 SuburbanFront Inner
1978ChevroletC30Front Inner
1978ChevroletG20Front Innerwith Heavy Duty Brakes
1978ChevroletG30Front Inner
1978ChevroletP20Front Inner
1978ChevroletP30Front Inner
1978GMCG35Front Inner
1977ChevroletC20Front Inner
1977ChevroletC20 SuburbanFront Inner
1977ChevroletC30Front Inner
1977ChevroletG20Front Innerwith Heavy Duty Brakes
1977ChevroletG30Front Inner
1977ChevroletP20Front Inner
1977ChevroletP30Front Inner
1977GMCG35Front Inner
1976ChevroletC20Front Inner
1976ChevroletC20 SuburbanFront Inner
1976ChevroletC30Front Inner
1976ChevroletG20Front Innerwith Heavy Duty Brakes
1976ChevroletG30Front Inner
1976ChevroletP20Front Inner
1976ChevroletP30Front Inner
1976GMCG35Front Inner
1975ChevroletC20Front Inner
1975ChevroletC20 SuburbanFront Inner
1975ChevroletC30Front Inner
1975ChevroletG20Front Innerwith Heavy Duty Brakes
1975ChevroletG30Front Inner
1975ChevroletP20Front Inner
1975ChevroletP30Front Inner
1975GMCG35Front Inner
1974ChevroletC20 SuburbanFront Inner
1974GMCG35/G3500 VanFront Inner
1973ChevroletC20 SuburbanFront Inner
1973GMCG35/G3500 VanFront Inner
1972ChevroletC20 SuburbanFront Inner
1972GMCG35/G3500 VanFront Inner
1971ChevroletC20 SuburbanFront Inner
1971GMCG25/G2500 VanFront Innerwith Front Drum Brakes
1971GMCG35/G3500 VanFront Inner
1970ChevroletC10 SuburbanFront Innerwith Heavy Duty Brakes
1970ChevroletC20 SuburbanFront Inner
1970GMCG25/G2500 VanFront Innerwith Drum Brakes
1970GMCG35/G3500 VanFront Inner
1969ChevroletC10 SuburbanFront Innerwith Heavy Duty Brakes
1969ChevroletC20 SuburbanFront Inner
1969GMCG25/G2500 VanFront Innerwith Drum Brakes
1968ChevroletC20 SuburbanFront Inner
1968GMCG25/G2500 VanFront Innerwith Drum Brakes
1967ChevroletC20 SuburbanFront Inner
1967GMCG25/G2500 VanFront Innerwith Drum 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:

12304208217712620392290-280290-8138216563857731417.66000432177146424464538974SGS1061T2175

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