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RX - 3rd Gen (2010-2015) Discussion topics related to the 2010 - 2015 RX350 and RX450H models

serpentine belt

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Old 12-03-15, 10:48 AM
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GSteg
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Originally Posted by IDRX
Isn't there a belt for the engine coolant pump?
I believe the water pump is driven by the timing chain.
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Old 12-04-15, 05:49 AM
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I could be wrong (just ask my wife), but my research shows the 400h water pump is driven by the Timing Belt. The 450h water pump is driven by a ribbed belt. (not much serpentine action as this belt appears to only go around the crank,water pump, and a tensioner).
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Old 12-04-15, 06:40 AM
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That would make it a lot easier to replace than having to remove the timing chain cover!
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Old 12-04-15, 07:14 AM
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I'll have to check under the hood today. May even end up replacing it at 100k miles if it's rubber!
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Old 04-10-24, 01:44 PM
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Originally Posted by IDRX
Isn't there a belt for the engine coolant pump?
Yup. Same belt as in the OP's photos.

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Old 04-11-24, 05:26 AM
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you could just post all these out on Google Drive or photos and share the link
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