E46Fanatics - View Single Post - DIY: Stewart Water Pump + Expansion Tank + Coolant Change + 2 Tensioner Pullies
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Old 11-30-2011, 09:58 AM   #147
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Join Date: Sep 2011
Location: New York
Posts: 9,481
My Ride: '04 330Ci
Yeah, I know the aftermarket still sells

the factory part. My point was that BMW deems it so undesireable that they replaced the part with an improved hydraulic unit and stopped selling the spring version. But it will carry you another 50K miles or so.
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