OMIX proudly offers all the parts you need to keep your Willys/Jeep running like new with quality standards that always meet or exceed those of the factory part. This replacement main shaft rear bearing adapter fits 46-49 CJ2A, 49-53 CJ3A, 53-66 CJ3B, 50-52 M38, 52-57 M38A1 and 55-71 CJ5 / CJ6 models equipped with T90 3-speed manual transmissions. Replaces 644552