Rear Pinion Bearing for Hyundai/Kia Differential ⚙️
This rear pinion bearing is a precision support part inside the rear differential. It is needed to keep the pinion gear perfectly aligned while it transfers power from the driveshaft to the ring gear. When the bearing is healthy, the axle runs smooth, quiet, and with correct gear mesh, even under load.
How it works
The bearing carries radial and axial forces created by acceleration, cruising, and engine braking. It lets the pinion shaft spin freely while holding it steady at the exact depth and angle. This protects the gear teeth pattern, keeps preload stable, and helps the differential oil film do its job.
Signs of failure & what happens if ignored
A worn bearing often causes humming/whining from the rear, vibrations, metal flakes in oil, and pinion seal leaks. If it breaks, the pinion can wobble, gears can chip, heat builds fast, and the differential may seize—leading to expensive gear and housing damage.
Compatibility ✅
- H-1 07 (2007-2015)
- H-1 07 (2010-2015)
- H-1 07My (Mexico) (2009-2013)
- H-1 15 (2015-2018)
- H-1 18 (2018-2021)
- H-1 18 (2018-)
- Grand Starex
- H-1/Grand Starex 15 (2015-2018)
- H-1/Grand Starex 18 (2018-2021)
