National 224255 Wheel Seal - Front Outer, Rear Left or Rear Outer

National 224255 Wheel Seal Overview

National 224255 is a metric oil seal for driveline and axle service, built with a polyacrylate sealing material and Redi-Coat surface treatment. With a 42.000 mm shaft diameter, 65.150 mm outside diameter, and 10.000 mm width, it is specified for a range of Mitsubishi-axle and Jatco transmission applications across Mazda MPV, Dodge Ram 50, Mitsubishi Mighty Max, and related vehicles.

National has supplied sealing solutions for more than 75 years, and this 224255 seal reflects that focus on dimensional accuracy and modern vehicle coverage. The National 224255 part number is used in axle and transmission sealing applications where the correct housing bore and shaft dimensions are critical.

Key Features

• Polyacrylate sealing material for driveline and axle sealing service
• Metric dimensions: 42.000 mm inside diameter, 65.150 mm outside diameter, 10.000 mm width
• Housing bore: 65.000 mm / 2.559 in
• Redi-Coat surface treatment for installation support
• Part description: oil seal
• National 224255 cross-references select BBB Industries 16527 and Bosch 66836 applications

Detailed Description

National 224255 is a metric wheel seal/oil seal engineered for driveline and axle sealing points where the shaft measures 42.000 mm and the housing bore measures 65.000 mm. The seal’s polyacrylate material is specified for sealing performance in automotive service environments, while the 10.000 mm width helps maintain the correct installed profile. This part is listed in National’s 220000 series and is identified as Type 47.

Compatible With applications include 1989-1998 Mazda MPV with Jatco RE4R01A transmission, 1983-1993 Dodge Ram 50 front outer with Mitsubishi axle and independent front suspension, and 1983-1993 Mitsubishi Mighty Max front outer with Mitsubishi axle and independent front suspension. It also covers additional Mitsubishi-axle vehicles such as Mitsubishi Montero, Dodge Raider, and several Chrysler, Plymouth, and Dodge rear axle applications. The National 224255 part number appears in interchange listings for multiple aftermarket references used in these same service positions.

What It Helps Address

• Gear oil seepage at axle or transmission seal points
• Contamination entering the sealed driveline area
• Leak-related fluid loss around the shaft opening
• Wear at the seal lip from age, heat, or mileage
• Service replacement needs on Mitsubishi axle and Jatco RE4R01A applications

Installation Notes and Tips

Verify shaft diameter, housing bore, and seal width before installation to confirm the National 224255 matches the application. Inspect the shaft surface and housing for scoring, corrosion, or burrs that can affect sealing performance. Clean the bore thoroughly and install the seal squarely to avoid distortion of the sealing lip. For fitment-specific service, use the vehicle position and notes listed for Mazda MPV, Dodge Ram 50, Mitsubishi Mighty Max, and other confirmed applications.

Quality Assurance

National has a long history in sealing technology and continues to support modern vehicle applications with dimensional, material, and fitment-focused designs. The 224255 seal is built to the listed metric specifications and material requirements for the applications shown.