National 14137A Manual Transmission Countershaft Bearing - Front

Manual Transmission Countershaft Bearing for Front Applications

National 14137A is a manual transmission countershaft bearing built as a taper bearing cone for front-position applications. It uses premium-grade steel with crowned raceways and rollers to promote even load distribution in service.

Compatible With front manual transmission applications on select Cadillac ATS, Chevrolet Camaro, Chevrolet SS, Dodge Challenger, Dodge Viper, Cadillac CTS, and Pontiac G8 models.

Key Features

• Taper bearing cone for manual transmission countershaft service
• Premium-grade steel construction
• Crowned raceways and rollers for even load distribution
• Cone bore: 1.3750 in. / 34.9250 mm
• Cone length: 0.7710 in. / 19.5830 mm
• Cone radius: 0.0620 in. / 1.5750 mm
• Part number: 14137A

Detailed Description

National 14137A is a taper bearing cone used in manual transmission countershaft assemblies where precise rolling contact and stable load handling matter. The crowned raceway and roller profile helps distribute load more evenly across the bearing surface, while the premium-grade steel construction supports consistent operation in demanding drivetrain environments. This part number 14137A is listed for front-position applications across multiple performance and passenger vehicles, including Cadillac ATS, Chevrolet Camaro, Chevrolet SS, Dodge Challenger, Dodge Viper, Cadillac CTS, and Pontiac G8.

This part cross-references StrongArm 4061 for the same application.

Common Issues This Bearing May Address

• Transmission noise from a worn countershaft bearing
• Rough or inconsistent manual transmission operation
• Excessive play in the countershaft bearing area
• Wear-related vibration in the transmission assembly
• Load distribution problems caused by a damaged taper bearing cone

Installation Notes and Tips

• Verify bearing dimensions and transmission application before installation.
• Inspect the mating race, shaft surfaces, and related components for wear or scoring.
• Clean all contact surfaces thoroughly before assembly.
• Use proper bearing installation tools to avoid damaging the cone or rollers.
• Confirm correct front-position placement during reassembly.

Quality Assurance

National manufactures this bearing cone with premium-grade steel and a crowned roller design to support even load distribution. Part number 14137A is built to meet the dimensional and application requirements listed for the confirmed vehicle fitments.