Give a worn bearing a fresh surface to run against with the National M86610 bearing race. National catalogs this part as a differential pinion race, automatic transmission pinion race, transfer case output shaft race and wheel bearing race. It is a direct-fit replacement for many vehicles, among them the 1966-1976 BMW 2002, 1986-2005 Chevrolet Astro and 1995-2005 Chevrolet Blazer. See the "Vehicles it fits" section for the full list.
- What it does: A bearing race is the outer ring that the bearing's rollers ride against. It helps the shaft or hub turn smoothly while it carries load.
- Listed under several names: The same part number is cataloged as a differential pinion race, automatic transmission pinion race, transfer case output shaft race and wheel bearing race, depending on the application.
- Position varies by vehicle: It is cataloged for front, rear, front outer, rear outer, rear inner and rear rearward locations. The location depends on the vehicle and on where the race is used.
- Pair it with its bearing: A race and its mating bearing wear together, so they are commonly replaced as a set.
Signs a race may need replacing include a whine, growl or rumble that changes with speed, roughness or play at the shaft or hub, and pitting, flaking or scoring on the race surface. Diagnose the cause before replacing parts, because noise can also come from gears or other bearings. Consult the vehicle service information for the correct installation and setup procedure.
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Frequently Asked Questions
What does National M86610 do?
It is the bearing race, the outer ring that the rollers ride against. Depending on the vehicle, it serves a differential pinion, transmission pinion, transfer case output shaft or wheel bearing.
Why is this race listed under several part names?
The same M86610 race is used in different locations across its applications. It is cataloged as a differential pinion race, automatic transmission pinion race, transfer case output shaft race and wheel bearing race.
Is this a front or rear race?
It is cataloged for front, rear, front outer, rear outer, rear inner and rear rearward locations. The location depends on the vehicle and on where the race is used.
Which vehicles does M86610 fit?
It fits many vehicles, including the 1966-1976 BMW 2002 and 1986-2005 Chevrolet Astro. See the "Vehicles it fits" section for the full list.
Should I replace the bearing at the same time?
A race and its bearing wear together, so they are commonly replaced as a set. Follow the vehicle service information for installation and any required preload or setup.
