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      03-07-2013, 09:15 PM   #80
ExpensiveTaste
Poor Kid with Dreams
 
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Drives: BSM 07 E90 335xi
Join Date: Aug 2010
Location: Danbury, CT

Posts: 701
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Quote:
Originally Posted by PINeely View Post
The thermostat is connected to the water pump with two bolts. There are three further bolts connecting the water pump to the crankcase. In theory you could leave the thermostat connected to the car after you remove those bolts and the thermostat -> water pump hose but you'd have less room to squeeze the pump out, maybe not enough. It's easiest to remove both parts at once I would think.

The sway bar needs to be lowered to access the pump as well. Four bolts, takes seconds.

I haven't changed one on an XI but it should be the same procedure and parts. Pumps are the same across the line with the exception of the M3 and 335d, which both use belt-driven pumps rather than electric.
The only difference with the xi is that the subframe covers alot more of the area that would be used for reaching in to. Taking off the passenger wheel and using long extensions to take off the hoseclamps was easiest.
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'07 BSM 335xi JB4, DCI, CX Racing I/C, ER Chargepipe, Meth, KW V3 - Pending Sale
'95 Mustang GTS 347ci Ported TFS TW Heads,Custom Cam,Victor 5.0 IM,Tubular Front Suspension,Full Exhaust,Big and Littles
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