National 204 Manual Transmission Countershaft Bearing

National 204 Manual Transmission Countershaft Bearing

National 204 is a manual transmission countershaft bearing built to OE-quality standards for consistent support inside the gearbox. This single row radial ball bearing is sized for applications that call for a 20 mm bore, 47 mm outside diameter, and 14 mm width.

Compatible With Nissan Frontier, Nissan Xterra, Jeep Wrangler, Toyota Corolla, and other manual transmission applications listed below, this bearing is used in rear-position and right-side transmission locations depending on the vehicle and transmission code.

Key Features

• Part number: National 204
• Manual transmission countershaft bearing / ball bearing
• Single row radial design
• 20.000 mm bore and 47.000 mm outside diameter
• 14.000 mm width for specified transmission fitments
• Built to meet or exceed OE quality standards
• Cross-reference example: Monroe Shocks & Struts 5762

Product Details

National 204 is part of National’s 200 series and is engineered for precise fit and dependable operation in manual transmissions. The bearing’s 0.787 inch bore, 1.850 inch outside diameter, and 0.551 inch width align with the dimensional requirements of many import and domestic manual gearbox applications. It is used in rear-position applications on vehicles such as the 1998-2003 Nissan Frontier, 2000-2003 Nissan Xterra, 1997-2002 Jeep Wrangler, and 1984-2000 Jeep Cherokee, as well as right-side applications on models like the 1996-2001 Suzuki Swift and 1998-2001 Chevrolet Metro.

National 204 also appears in fitments for Nissan 240SX, Nissan 300ZX, Nissan D21, Nissan 720, Toyota Corolla, Isuzu Pickup, Isuzu Trooper, and Porsche 911 applications listed in the catalog data. The part number 204 is also referenced across multiple interchange listings, which helps when matching an OE-style replacement for a manual transmission countershaft bearing.

What It Helps Address

• Transmission bearing noise from worn countershaft support
• Excessive play in the manual gearbox shaft assembly
• Rough shifting caused by bearing wear or damage
• Transmission vibration related to bearing deterioration
• Service replacement for specified rear or right-side transmission positions

Installation Notes and Tips

Verify the transmission code, position, bore size, outside diameter, and width before ordering. This bearing is listed for rear and right-side applications depending on the vehicle, including Nissan FS5W71C, Suzuki M42, Suzuki MV2, Isuzu MSG-5K, Isuzu MSG-5ET, Toyota T50, and Porsche Sportomatic configurations shown in the fitment data. Confirm the exact application against the vehicle’s transmission identification to ensure proper installation.

For best results, inspect the mating shaft, race surfaces, and transmission housing for wear before assembly. Clean all contact surfaces thoroughly and follow the service procedure for the specific manual transmission being repaired.

Quality Assurance

National manufactures this bearing to exacting standards with OE-quality expectations for lasting performance and extended bearing life. The 204 part number is supported by broad interchange coverage and cataloged fitment data for a wide range of manual transmission applications.