Fitment questions?
Call (855) 786-7101 or text (801) 304-3141. We check fitment by VIN.
Product details
The A3 outer bearing cup provides the running track inside the specified Wilwood rotor-hub assembly. Its nominal outside diameter is 1.969 inches, so it must not be confused with the nearby 1.980-inch A4 inner race. Wilwood Engineering designs and manufactures complete disc brake systems as well as calipers, brake rotors, master cylinders, valves, fittings, and brake lines. Based in Camarillo, California, it was founded by Bill Wood in 1977. The range serves motorsport, street-performance, and specialized applications, requiring each part to be matched to the system in which it operates.
Technical Details
- Manufacturer part number: 370-9245
- Bearing Material: Steel
- Finish: Bare
- Cup OD: 1.969 inches nominal; 1.9687-inch reference
- Set: A3
- Reference: M12610
- Matching cone: 370-9542
- Supplied: One race
Fitment & Compatibility
Pair with outer cone 370-9542 and confirm the hub or rotor bearing specification. Wilwood lists a 1.9687-inch reference cup diameter; check the bearing family as well as size.
Manufacturer Documents
Representative product-family image. Confirm the ordered bearing or kit using the part number and specifications.
PMB Performance has over 20 years of experience working through parts and fitment questions. Let us help compare the component with your planned installation before purchase.
