Honda K Series Rear Mainshaft Ball Bearing 91002-RAS-003

Honda OEM K Series Rear Mainshaft Ball Bearing - 91002-RBB-003

Rebuilding your K series transmission? This is the genuine Honda rear mainshaft ball bearing for K series gearboxes. It installs on the rear of the mainshaft, opposite of the pilot bushing. It's the same bearing that came in your transmission from the factory, so it fits right and lasts. If your rear mainshaft bearing is worn out or noisy, you'll hear grinding or whining from the transmission. Replace it with this OEM bearing and your trans will shift smooth and quiet again. Part number 91002-RBB-003.

Why You Need OEM on a Mainshaft Bearing

The rear mainshaft bearing handles all the torque that goes through your transmission. It spins constantly whenever the car's moving, which means it takes a beating. Cheap aftermarket bearings often use lower quality steel or looser tolerances, so they wear out faster or make noise even when they're new. This genuine Honda bearing is built to the same specs as the original, so you get the reliability and service life Honda engineered into your transmission.

When to Replace It

If you're hearing grinding, whining, or growling from your transmission that changes with speed, your rear mainshaft bearing is probably worn out. You'll also want to replace it if you're doing a transmission rebuild or if you're swapping in a used trans and want to make sure the bearings are fresh. Don't reuse a questionable bearing and end up tearing the transmission apart again in six months.

Fits These Transmissions

• K series manual transmissions
• Verify fitment with part number 91002-RBB-003

Specifications

• Honda part number: 91002-RBB-003
• Genuine Honda OEM replacement
• Rear mainshaft ball bearing for K series transmissions
• Located on rear of mainshaft, opposite of pilot bushing

Note: Verify your part number before ordering. This bearing is for K series manual transmissions only. If you're rebuilding your transmission, replace all the bearings and synchros while you're in there.