National 1012N Wheel Seal

National 1012N Wheel Seal for Driveline Service

National 1012N is a metric wheel seal built with nitrile sealing material for dependable sealing performance in driveline and axle service. With precise dimensions and broad vehicle coverage, it is a direct-fit option for many rear, front inner, and right-side applications across BMW, Audi, Porsche, Saab, and other import platforms.

National has supplied sealing solutions for more than 75 years, and this seal reflects that focus on dimensional accuracy and modern vehicle coverage. The 1012N is an oil seal style component with a 45.000 mm shaft size, 62.000 mm housing bore, and 8.000 mm width.

Key Features

• Part number: 1012N
• Wheel seal / oil seal style component for driveline and axle sealing
• Nitrile sealing material for reliable fluid retention
• Metric dimensions: 45.000 mm inside diameter, 62.300 mm outside diameter, 8.000 mm width
• Housing bore: 62.000 mm
• Series 1000 design
• Direct replacement coverage for rear, front inner, rear inner, and right-side applications

Detailed Description

National 1012N is engineered around exact metric sizing to help maintain a proper seal at the shaft and housing interface. The nitrile material is commonly used in automotive sealing applications because it provides consistent contact and resistance in demanding driveline environments. This makes the seal a practical choice for service work where leakage control and dimensional match are critical.

Fitment includes applications such as 1994-1999 BMW M3, rear; 1995-1998 Audi A6 Quattro, right; 1983-1991 Porsche 944, front inner; and 1965-1989 Porsche 911, front inner. It also covers vehicles like the BMW 740i, BMW 750iL, Saab 900, Saab 9000, and Volkswagen Beetle in the listed positions. This part cross-references SKF 550154 for the same application.

Common Problems This Seal Can Address

• Gear oil seepage at the wheel or axle seal area
• Contamination entering the sealed driveline or hub interface
• Leakage around a worn shaft-to-housing sealing surface
• Noise or driveline wear associated with low lubricant retention
• Service replacement for aging seals on BMW M3, Audi A6 Quattro, and Porsche 944 applications

Installation Notes and Tips

• Verify shaft diameter, housing bore, and width before installation.
• Confirm the vehicle position exactly as listed, such as rear, right, front inner, or rear inner.
• Inspect the sealing surface for scoring, corrosion, or wear before installing the new seal.
• Use clean installation practices to avoid damaging the nitrile sealing lip.
• Match the application notes, including differential or transmission details where specified for BMW, Audi, Saab, and Ford models.

Quality Assurance

National is recognized for sealing products backed by more than 75 years of industry experience. The 1012N is part of the National 1000 series and is built to meet the dimensional requirements needed for accurate automotive sealing service.