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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > Regional Forums > UK > UK Technical Forum > Serpentine belt



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      12-11-2018, 08:36 AM   #1
Dormermike
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Serpentine belt

Hi

Can someone confirm the serpentine belt change mileage for an n53 engine please?

Mine is on 60k miles at the moment and no signs of wear but I don't want the engine to lunch on it either.

Thanks
Mike
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      12-11-2018, 03:13 PM   #2
Phil325i
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Having seen the results of a shredded belt being sucked into the engine via the crankshaft pulley seal, I changed mine at 50K and will be doing so again soon, at 100K.
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      12-12-2018, 03:22 AM   #3
Dormermike
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Thanks Phil, will get one ordered.

Genuine BMW is best bet I imagine.
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      12-12-2018, 05:37 AM   #4
msjt
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It’s not really the belt that wears on it’s own. Leaking ofhg, loose power steering pump/pulley, or pulley hitting the subframe usually causes the belt to shred.
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      12-12-2018, 11:35 AM   #5
Dormermike
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Mines an f10 so no power steering but perhaps worth chucking a new tensioner on?

Apologies if this is a common question btw I did search but didn't find anything.

Only oil leak on my engine is at the back of the sump, small leak, misting not dripping.
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      12-12-2018, 12:25 PM   #6
Needbmwpartzz
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i would change after 100000 miles with tensioner/pulleys to be safe....and make sure no leaks as previously mentiined.
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