USA standard gear sells rebuild kits on amazon that the $50 gift card burning a hole in my pocket has its eye on. Ive got a 1983 Delta 88 with the 7.5 and im wondering about their kits.

The ZK GM7.5-A & ZK GM7.5-B kits seem to be identical with their koyo/timken bearings and other small parts but a $25 price tag difference. The former being "7.5 pre-81" and latter being "7.5&7.625 82-99".

Can I just buy the cheaper one since mine is definitely a 7.5 or do I have to buy the "B" kit?

 

The pinion bearings are different sizes
A uses the M89449 M89410 1975-1981
B uses the M89249 M89210 1982- 1988

YOU have to use the correct kit...THEY ARE NOT THE SAME

 

Thanks for clearing that up for me Jim. Appreciate the info!