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Old 08-30-2012, 10:59 AM   #7
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Join Date: Nov 2008
Location: USA - GA
Posts: 2,310
My Ride: '04 330i 6mt ZSP ZPP
+1 on OEM cooling components. As one example, the hoses are shaped in a specific way and have quick-fitting plastic connectors on each end, with rubber O-rings integrated on the inside. The plastic connectors are oriented in a specific way to line up with the keyed inlets and outlets of the thermostat, radiator, etc. Removal and install is literally "a snap"!

As specific as the hose design is, I wouldn't want to compromise proper fitment by using another brand of hose. That is just my preference. I'm sure others have had success with aftermarket hoses.

The Stewart-vs-OEM water pump debate will go on forever. Some people here perceive it to be more durable simply because the impeller is metal and the pump looks/feels prettier. Unfortunately there is no real statistical data on this forum to justify the $100 price difference. It's really a matter of personal preference. Stick with OEM and change it at regular intervals.
BMW CCA member - Peachtree Chapter

Last edited by LeMansteve; 08-30-2012 at 11:17 AM.
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