i have a u320 450 cums 2001 is anyone doing the rk12963 retrofit kit if so what does it come with
This is the one on my coach.
Racor RK 12963 REPL KIT-INTEGRATED (https://racorstore.com/racor-rk-12963-repl-kit-integrated.html)
It comes with everything you need. Once installed you just have to change the filter part. The strainer is cleanable and replaceable.
I just replaced both of these and the secondary filter. Carry spare filters.
so you are saying new one willlook like old one i feel I'm getting air in system form old o ring thanks for the help fred
Might take a look at the Racor R790r30. Replaces the whole assembly and comes with a prime pump. Nice bit of gear.