Search result for: 3220331G00
BEARING-MAIN SHAFT
Part number: 3220331G00
Availability: 0
Weight, kg: 0.069
Make: Nissan
Made in: Japan

Premium Main Shaft Bearing for Nissan Manual Gearboxes ⚙️
This precision support bearing keeps the transmission’s main shaft running true and quiet. It centers the shaft, carries radial/axial loads from gears, and maintains perfect gear mesh. If you want crisp shifts, low noise, and long gearbox life, this is the core component you replace when play or rumble appears. Built to OEM geometry and hardened race specs, it resists heat, shock, and high RPM use.
Why it’s needed
Inside a manual gearbox, the main shaft transfers engine torque to the output. The bearing stabilizes that shaft so synchronizers can align smoothly and gears can share load evenly. A fresh unit restores alignment, reduces friction, and protects seals and synchros.
How it works
Hardened inner/outer races and precision balls/rollers ride in a calibrated cage. Film lubrication minimizes metal contact while the bearing supports the shaft under thrust during acceleration, deceleration, and towing.
What happens if worn or broken ❗
Expect growling at cruise, whine on load, shifter vibration, hard or notchy shifts, and metallic debris in oil. Continued use can chew synchros, pit gears, overheat the case, and lead to sudden transmission seizure.
Tech notes
Always check shaft runout, replace companion seals, flush the case, and refill with the correct GL-rated oil. Pre-lube the bearing and torque retainers per spec.
Compatibility
- Truck-Hardbody
- King Cab
- Hardbody
- Terrano2
- Np300
- Pathfinder
- Terrano
- Datsun Truck
- Truck
- Pickup
- Frontier
- Np300 F/Sbs,Med
- Patrol
- Skyline
- Safari
- Stagea
- Desert Thunder
- Xterra
- Nissan Truck Zn
