how do you change the expansion tank on 2003 BMW 325xi

have pin hole in tank and need to replace

by in Bethel, CT on March 27, 2011
1 answer
ANSWER by , March 27, 2011
This is not a simple process. I'd suggest a BMW specialty shop. If you are absolutely sure you can do it, you can find great repair manuals with step-by-step instructions, diagrams, parts locations and other important information here: Or here: Make sure you use the OE blue antifreeze and nothing else. If there is already another coolant in the system make sure it's flushed out well. Zee