Good job! I have to do this and other tasks on my /04 E60 (545i). Today, I am ordering from AGA: coolant pipe, secondary air port cleaning kit, and valve stem seal replacement tool kit. Also will get valve cover seals and stem seals. Total cost is about $1850. My E60 has 120k miles and all three problems showed up within the last 5k miles or so. Can't wait, ugh!
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