InMotion WT30304 Manual Transmission Countershaft Bearing - Front Outer, Outer or Rear

Manual Transmission Countershaft Bearing

InMotion WT30304 is a manual transmission countershaft bearing built for select import applications that use a tapered bearing design. With a 20 mm cone inside diameter, 52 mm cup outside diameter, and 16.3 mm set width, it is sized for precise transmission support and smooth rotational movement.

Use WT30304 when servicing a manual gearbox that calls for a tapered countershaft bearing in the transmission assembly. This bearing is listed for a wide range of vehicles, including Nissan Sentra, Dodge Colt, and Mitsubishi Mirage applications with specific Mitsubishi and Aichi transmissions.

Key Features

• Manual transmission countershaft bearing for transmission service and rebuild work
• Taper bearing construction for controlled load handling and reduced friction
• 20 mm cone inside diameter, 52 mm cup outside diameter
• 16 mm cone width and 13 mm cup width for matched fitment
• Set width of 16.3 mm for applications requiring this bearing specification
• Fits select Nissan, Dodge, Hyundai, Mitsubishi, Toyota, Volkswagen, and Mercedes-Benz applications
• Part number WT30304 for catalog and service identification

Detailed Description

InMotion WT30304 is a tapered manual transmission countershaft bearing engineered for applications that require stable shaft support and consistent rotation inside the gearbox. The bearing uses quality materials and a universal-style design approach for dependable operation in automotive and industrial environments. Its dimensions and bearing geometry make it a direct-spec service part for transmissions that call for this exact size and type.

Vehicle coverage includes Fits 1982-1999 Nissan Sentra, N/A, with Aichi F30A Transmission; Fits 1985-1989 Dodge Colt, N/A, with Mitsubishi KM182-0 Transmission; Fits 1986-1989 Hyundai Excel, Rear, with Mitsubishi KM162-0 Transmission; and Fits 1989 Mitsubishi Mirage, Outer, with Mitsubishi KM171-5 Transmission. WT30304 also applies to additional Mitsubishi, Toyota Pickup, Volkswagen Beetle, and Mercedes-Benz 300SL and 300D listings in the provided fitment data. If you are searching for a manual transmission countershaft bearing for Nissan Sentra or Mitsubishi Mirage service, WT30304 is the listed part number.

What It Helps Address

• Transmission noise caused by worn countershaft bearing surfaces
• Excess friction inside a manual gearbox
• Shaft instability or looseness in the transmission assembly
• Rough rotation during transmission rebuild or repair
• Wear-related service needs in older Mitsubishi, Nissan, and Dodge manual transmissions

Installation Notes and Tips

Confirm the bearing dimensions, taper style, and transmission code before installation. WT30304 is listed for specific gearbox applications, so match the vehicle, transmission model, and bearing position exactly to the fitment data. Clean the housing thoroughly, inspect the shaft and cup surfaces for wear, and verify proper seating during assembly. For best results, compare the removed bearing to the new part before pressing it into place.

Quality Assurance

InMotion describes this bearing as a high-quality, multi-purpose component built for consistent performance and durability across demanding environments. Part number WT30304 is specified for exact-fit service in the listed manual transmission applications.