Water pump OEM BMW or GRAF

A 525tds was my first car. Only ever had two problems with it. Heater fuse kept blowing- turned out the previous owners install of the head unit used eletrical tape which over time lead to a cable shorting out on the din cage. Water pump died - oem impeller was plastic. The replacement was metal

If it *is* leaking you might want to consider replacing it with a Graf alloy-bodied pump which won’t be affected by heat and exposure to oil, the usual causes of eventual failure of the plastic pumps.

Graf has been pretty good to me.

I have the Graf brand on mine, replaced mine at around 120k miles. It’s aluminum and has aluminum impeller also.

I installed one on me 325i 12k miles ago, no issues so far, it was part of the FCP euro water pump kits

6 months and 4000km on mine. Only found out a while after Graf has a bad rep. But no problems with mine yet.

Electric water pump on my BMW was \u00a3436.54 fitted at a BMW specialist (not dealership) OEM pump fitted, the same pump for me to buy and fit myself (no chance) was \u00a3600+ on Euro Car Parts

I don't trust the BMW oem pumps any farther than you can throw them

The water pump had a micro leak that would spray coolant on the air box. Never enough to make me want to go through the trouble of replacing it.

the metal fins are spot welded like shit on these cheap metal waterpumps. my graf pump also started to leak from the weep hole after a year too