Countershaft Bearing for Nissan Manual Gearbox ⚙️

Why you need it

This bearing supports the countershaft so gears stay perfectly meshed, reducing friction, heat, and noise. It controls radial and axial loads during acceleration and engine braking, keeps shift feel precise, and protects synchros and gear teeth. Without a healthy support point, torque twists the shaft off-center, causing rapid wear across the transmission.

How it works

Hardened inner and outer races guide precision rollers/needles that rotate in a steady oil film ️. A rigid cage spaces the elements, preventing skidding while handling constant torque reversals. Tight machining tolerances keep the shaft concentric, so gears run true and quiet even under heavy load.

When worn or failed ⚠️

• Whine that rises with road speed
• Notchy or grinding shifts
• Metallic glitter on the drain plug
• Vibration on throttle and decel

Ignored, the rollers pit and overheat ️, cages collapse, and the bearing can seize—chipping gears, burning synchros, cracking the case, and leaving you with no drive (and a tow bill).

Pro install tips

• Inspect shaft journal; no scoring or blueing.
• Measure endplay and preload; follow spec.
• Renew seals/gasket, flush debris, clean magnet.
• Fill with the correct GL-4 oil and viscosity.
• Torque housing evenly and align dowels.

Built for longevity ✅

Heat-treated steel, precise roller geometry, and a smooth race finish deliver low friction and long life—ideal for towing and off-road duty .

Compatibility

• Civilian
• Safari
• Safari Pick Up
• Patrol