4 Bolts on the water pump. 3 are small M6 and one is larger, M8 I think. I've heard if you can pull it out enough to get a gap it's possible to spray WD40 on the o ring and it will pop right out. My Graf pump practically fell out once I took the bolts out. O ring didn't look good at all. __________________ ~Dave~ 98 328ti Morea Grun slicktop 11 128i space gray slicktop 13 JGC WK2 Deep Cherry Search | RealOEM |