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National 40520S Wheel Seal - Rear InnerOE Quality 60-Day Returns
Part #: 40520S

National 40520S Wheel Seal - Rear Inner

Rear Inner
64 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Aston Martin and Jaguar, DB7, XJ12, XJS, Vanden Plas, and XJ6
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Overview of National 40520S Wheel Seal for Aston Martin and Jaguar

The National 40520S wheel seal is engineered to provide reliable sealing performance for select Aston Martin and Jaguar models. Designed with precision, this oil seal helps maintain driveline integrity by preventing lubricant leaks and contamination.

  • Inside diameter: 2.250 inches (57.150 mm)
  • Outside diameter: 3.005 inches (76.330 mm)
  • Housing bore: 3.000 inches (76.200 mm)
  • Width: 0.250 inches (6.350 mm)
  • Material: durable nitrile rubber
  • Type: 4s series oil seal

Detailed Specifications and Material

The National 40520S wheel seal features a nitrile rubber construction, known for its resistance to oil, heat, and wear, making it suitable for demanding automotive applications. With an inside diameter of 2.250 inches and an outside diameter of 3.005 inches, this seal fits precisely within a 3.000-inch housing bore. The 0.250-inch width ensures a secure fit to maintain effective sealing around the shaft. This 4s type oil seal is part of National's 40000 series, designed specifically for driveline and axle sealing systems.

Compatible Vehicles and Applications

This wheel seal is compatible with various Aston Martin and Jaguar models, including the Aston Martin DB7 and Jaguar Vanden Plas, XJ6, XJ12, and XJS. The National 40520S is ideal for maintaining the integrity of the wheel hub assembly by preventing oil leaks and protecting against dirt and debris intrusion.

  • Prevents oil leaks in wheel hubs
  • Protects driveline components from contamination
  • Reduces wear on axle shafts
  • Maintains proper lubrication within the axle assembly
  • Helps avoid costly driveline repairs

Installation Notes and Tips

When installing the National 40520S wheel seal, ensure the housing bore and shaft surfaces are clean and free of debris. Use appropriate tools to press the seal evenly into the housing bore without damaging the sealing lip. Lubricate the seal lip lightly with compatible oil before installation to reduce initial wear. Verify the seal orientation matches the original part to ensure proper sealing performance.

Quality Assurance and Warranty

National manufactures the 40520S wheel seal to meet industry standards for durability and performance. The nitrile material and precise dimensions contribute to a reliable seal life under normal operating conditions. While specific warranty details may vary, National typically offers coverage against manufacturing defects to ensure customer confidence in their products.

BrandNational
Part Number40520S
Housing Bore (Inch)3.000
Housing Bore (MM)76.200
Inside Diameter2.250
Inside Diameter57.150
MaterialNitrile
Outside Diameter3.005
Outside Diameter76.330
Outside Diameter (Inch)3.005
Outside Diameter (mm)76.330
Part DescriptionOil Seal
Series40000
Shaft (Inch)2.250
Shaft (MM)57.150
Type4S
Unit of DimensionInch
Width (Inch)0.250
Width (mm)6.350

This part fits 64 vehicles. Search below:

YearMakeModelPositionNotes
2004Aston MartinDB7Rear Inner
2003Aston MartinDB7Rear Inner
2002Aston MartinDB7Rear Inner
2001Aston MartinDB7Rear Inner
2000Aston MartinDB7Rear Inner
1998Aston MartinDB7Rear Inner
1997Aston MartinDB7Rear Inner
1992JaguarXJ12Rear Inner
1992JaguarXJSRear Inner
1991JaguarXJ12Rear Inner
1991JaguarXJSRear Inner
1990JaguarXJ12Rear Inner
1990JaguarXJSRear Inner
1989JaguarXJ12Rear Inner
1989JaguarXJSRear Inner
1988JaguarXJ12Rear Inner
1988JaguarXJSRear Inner
1987JaguarVanden PlasRear Inner
1987JaguarXJ12Rear Inner
1987JaguarXJ6Rear Inner
1987JaguarXJSRear Inner
1986JaguarVanden PlasRear Inner
1986JaguarXJ12Rear Inner
1986JaguarXJ6Rear Inner
1986JaguarXJSRear Inner
1985JaguarVanden PlasRear Inner
1985JaguarXJ12Rear Inner
1985JaguarXJ6Rear Inner
1985JaguarXJSRear Inner
1984JaguarVanden PlasRear Inner
1984JaguarXJ12Rear Inner
1984JaguarXJ6Rear Inner
1984JaguarXJSRear Inner
1983JaguarVanden PlasRear Inner
1983JaguarXJ12Rear Inner
1983JaguarXJ6Rear Inner
1983JaguarXJSRear Inner
1982JaguarVanden PlasRear Inner
1982JaguarXJ12Rear Inner
1982JaguarXJ6Rear Inner
1982JaguarXJSRear Inner
1981JaguarXJ12Rear Inner
1981JaguarXJ6Rear Inner
1981JaguarXJSRear Inner
1980JaguarXJ6Rear Inner
1980JaguarXJSRear Inner
1979JaguarXJ12Rear Inner
1979JaguarXJ6Rear Inner
1979JaguarXJSRear Inner
1978JaguarXJ12Rear Inner
1978JaguarXJ6Rear Inner
1978JaguarXJSRear Inner
1977JaguarXJ12Rear Inner
1977JaguarXJ6Rear Inner
1977JaguarXJSRear Inner
1976JaguarXJ12Rear Inner
1976JaguarXJ6Rear Inner
1976JaguarXJSRear Inner
1975JaguarXJ12Rear Inner
1975JaguarXJ6Rear Inner
1974JaguarXJ12Rear Inner
1974JaguarXJ6Rear Inner
1973JaguarXJ12Rear Inner
1973JaguarXJ6Rear Inner

* 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:

0044500114450013128662236826-808532986840520S4450072-15957883249C-15231T2211

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