coolant hose P/N tip
Posted: Sun Mar 08, 2015 4:47 pm
While working on ordering a set of coolant hoses for my 77 530i w/ 80-81 528i FI, I finally noticed why I'd seen so many recent posts asking about
hose P/N differences between early and late E12s.
In many cases, realoem shows a 9/79 cutoff on coolant hoses. Pulling up windows for both a 77 530i and an 81 528i, I noticed many of those P/Ns are the same across the "up to" and "from" 9/79 boundary; therefore, there are a lot less interchange problems than one is led to believe....
Having updated my car with many 528i items, I can say the only cooling hose differences occur in conjunction with older water-heated aux air valve. This affects a few hoses going to the middle of the coolant return pipe and 1 formed hose plumbing the TB.
hose P/N differences between early and late E12s.
In many cases, realoem shows a 9/79 cutoff on coolant hoses. Pulling up windows for both a 77 530i and an 81 528i, I noticed many of those P/Ns are the same across the "up to" and "from" 9/79 boundary; therefore, there are a lot less interchange problems than one is led to believe....
Having updated my car with many 528i items, I can say the only cooling hose differences occur in conjunction with older water-heated aux air valve. This affects a few hoses going to the middle of the coolant return pipe and 1 formed hose plumbing the TB.