Water pump AISIN or GRAF

Had a better look during weekend and the "substance" in the expansion tank looks and feels like rust particles not oil. It does not feel slick. I'll be replacing the pump with the aluminum Graf unit soon, hoping I'll last more than 100k at least.

I ordered the Graf aluminum water pump kit from ECS Tuning and did the job this past weekend. I'm glad I took the intake manifold off. I did some carbon cleaning while I was in there, I was surprised to see how much build up was in there for a 70K engine. I don't really see how I could have replaced the pump without removing the intake manifold

I went to the dealer and after a long discussion about plastic vs metal impellers (they thought the VW branded pump was metal) a nice gentleman at the dealer ordered me a Graf branded aftermarket pump for $100 Canadian all-in.

I bought this KIT from SHOPDAP and it was a breeze to install. The price at SHOPDAP is great too.

Graf with the metal impeller. No issues.

I've used Graf water pumps on two different E46s without any issues.

I ordered the kit from urotuning for my gfs 01 golf, been in for almost 2 years now no issues. They use a Graf water pump with a metal impeller.

I picked up a 3.6 brass impeller Graf waterpump for under $50 from www.autohausaz.com they also sell the oem thermostat.

I had a graff metal impeller waterpump start leaking from the weep hole about 2 months after replacement.

I had a problem with a metal impeller water pump: I did a tbelt change about 10K miles ago. Used a GRAF water pump with a metal impeller(I think it is most common with the aftermarket tbelt kits). The bearing seal started leaking coolant 8k miles later.