National 32004 Manual Transmission Input Shaft Bearing

National 32004 Manual Transmission Input Shaft Bearing

National 32004 is an ISO metric taper bearing assembly for manual transmission input shaft service. Built to OE specifications with premium materials, it is sized for precise transmission support in a range of Volvo, Suzuki, Geo, Chevrolet, Pontiac, Jeep, Dodge, and Mitsubishi applications.

Key Features

• Manual transmission input shaft bearing, part number 32004
• Taper bearing assembly, Type TS, Series 32000
• ISO metric design with 20.0000 mm bore and 42.0000 mm outside diameter
• 15.0000 mm width for compact transmission packaging
• Engineered to meet OE specifications
• Cross-reference example: SKF BR32004

Detailed Description

This National 32004 bearing is designed for manual transmission input shaft applications where accurate shaft support and consistent rotational control matter. The taper bearing assembly uses an ISO metric design with a 0.7874 in. bore, 1.6535 in. outside diameter, and 0.5906 in. width, making it a direct-spec replacement for many import and light-duty manual gearboxes. It is commonly used in Volvo M66W, M66L, and M66C transmissions, as well as Suzuki M42, M58, and MV2 transmissions. It also appears in select Jeep BA 10/5, Mitsubishi KM161-0, and related applications. National 32004 is a practical choice when servicing a Volvo C30, S40, or V50 manual transmission, or when replacing an input shaft bearing in Suzuki Swift and Chevrolet Metro drivetrains.

What It Helps Fix

• Transmission noise from a worn input shaft bearing
• Excessive shaft play or looseness in the gearbox
• Rough shifting caused by bearing wear
• Vibration or gear whine from damaged taper rollers
• Premature transmission wear from poor shaft support

Installation Notes and Tips

Verify transmission code, position, and dimensions before installation. This bearing is listed for outer, left, and right positions depending on the vehicle and transmission, so confirm the exact application against the transmission tag or service information. Clean the bearing seat, inspect the shaft and cup surfaces for scoring, and replace any worn mating components during service. For fitment examples, this part fits 2007-2013 Volvo C30, outer, with Volvo M66W transmission; fits 2005-2008 Volvo S40, outer, with Volvo M66L transmission; and fits 1996-2001 Chevrolet Metro, left, with Suzuki M42 transmission.

Quality Assurance

National manufactures this taper bearing assembly to OE specification standards using premium materials for transmission service. The part number is 32004, and it is also referenced in the aftermarket under SKF BR32004 for the same application.