Honda Genuine Radial Ball Bearing – 43x68x13mm for TRX250, TRX300 & TRX250EX – 91051HC4003
Honda Genuine Radial Ball Bearing – 43x68x13mm for TRX250, TRX300 & TRX250EX – 91051HC4003 is backordered and will ship as soon as it is back in stock.
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Honda Genuine Radial Ball Bearing – 43x68x13mm for TRX250, TRX300 &...
Ensure smooth rotation and reliable drivetrain performance with this genuine Honda OEM radial ball bearing, part number 91051-HC4-003. Factory-engineered to exact Honda specifications, this bearing measures 43mm (inner) x 68mm (outer) x 13mm (width) and is the exact replacement for the component originally installed on your Honda ATV .
This bearing is a critical component of the rear differential / final drive assembly. It is interchangeable with Koyo DG436813 and NTN SC0929, confirming its precision-grade Japanese manufacturing origin . A direct OEM fit – no modifications required.
Vehicle Fitment:
⚠️ Not compatible with TRX300EX Sportrax Edition .
Always verify fitment using your vehicle's specific model, year, and VIN before ordering.
Product Specifications:
Why Choose Genuine Honda 91051-HC4-003?
This radial ball bearing is a genuine Honda OEM-specification component, manufactured by premium Japanese bearing suppliers Koyo or NTN . It is a critical wear item within the rear differential housing, supporting the pinion gear or differential case under constant load and rotation.
Forum Verified: An experienced Honda TRX technician specifically recommends purchasing genuine Honda bearings for this application, advising to "stay away from all 'repair kits' on Ebay" and to order the individual OEM parts – including 91051-HC4-003 – from Honda .
Non-genuine or aftermarket bearings risk:
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Incorrect dimensional tolerances – improper fitment and premature failure
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Sub-standard steel alloys – accelerated raceway wear and spalling
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Inadequate cage construction – ball separation and bearing seizure
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Recurring labour costs – repeated differential disassembly and replacement
This genuine Honda 91051-HC4-003 bearing is precision-ground to exact tolerances and sealed to Honda's specification, ensuring long service life in the harsh, oil-immersed environment of your ATV's final drive.
Kit & Cross-Reference Note:
This bearing is frequently included in aftermarket differential rebuild kits alongside seal 91271-HC4-004 . However, verified owner feedback confirms that genuine Honda OEM bearings are the preferred choice for durability and correct fitment .
OEM part numbers are provided for cross-reference purposes only. This listing is for the genuine Honda bearing or an equivalent OEM-quality replacement meeting all factory specifications.
Genuine OEM Advantage:
Honda genuine parts are the only components engineered and tested to meet all factory standards for safety, performance, and reliability. Trust the original.
Genuine Honda OEM parts are precision-engineered to maintain the performance, reliability, and value of your powersports vehicle.
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