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X3 E83 (2004 - 2010)
Talk about the E83 BMW X3 in this forum!

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Old 09-30-2016, 04:56 AM
Bdiamond Bdiamond is offline
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Location: Delran N.J.
Join Date: Sep 2016
Posts: 1
Mein Auto: X3
Engine swap

I have a 05 x3 that I'm swapping engines same as original and would like to know beside the new water pump,starter,radiator,a/c compressor,xspanion tank,should I change the oil cooler or oil cooler thermostat
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Old 09-30-2016, 06:35 AM
timarnold timarnold is offline
Location: Maryland
Join Date: Sep 2009
Posts: 847
Mein Auto: 2003 bmw 525i
You will most likely break the oil cooler thermostat when you remove it. There is no need to replace the oi cooler.
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Old 09-30-2016, 06:46 AM
dukedkt442 dukedkt442 is offline
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Location: Upstate, NY
Join Date: Feb 2013
Posts: 1,405
Mein Auto: 08 E83; '86 442; 84 GMC
Engine swap

Pull the old engine out with everything you plan to swap still attached and swap on the stand. Don't need to replace the oil cooler, but certainly replace its gasket. I'd probably do the thermostat while out, as a "might as well."

Unless you need a new compressor, I'd just unbolt it and set it to the side in the engine bay so you don't have to mess with capturing refrigerant and recharging the system.

Last edited by dukedkt442; 09-30-2016 at 06:48 AM.
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