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Old 08-15-2019, 10:10 AM
325bim 325bim is offline
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Serpentine belt broke

2006 Z4 n52 engine, I was able to get home, and after inspection, I donít see an idler pulley, just a tensioner, did they come without idler pulley? I plan on replacing the tensioner and belt, but not sure what parts I need.. confused as searches donít address this
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Old 08-15-2019, 10:24 AM
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Doug Huffman Doug Huffman is offline
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Old 08-15-2019, 10:35 AM
325bim 325bim is offline
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Thanks, but that doesnít represent my engine config, power steering is electric, so no pulley for that. Was the idler pulley deleted, when they went to electric power steering?
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Old 08-15-2019, 04:02 PM
wifesauto wifesauto is offline
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turn every pulley and make sure they are free before you replace the belt
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Old 08-15-2019, 05:12 PM
BabyUnicornTaco BabyUnicornTaco is offline
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I canít see the picture you uploaded but I think your electric pump is located on the passenger side of the engine. If so, I would think that you donít have or need an idler pulley and never had one. Your belt would be a different belt from what Doug posted but would follow the same path minus the power steering pulley.


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Old 08-15-2019, 05:43 PM
325bim 325bim is offline
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The difficulty is finding what is the correct part number for the belt, every where I look they either show the belt going around the ps under the alternator with an idler pulley, or describe it as for ac, alt and ps.
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Old 08-15-2019, 05:49 PM
BabyUnicornTaco BabyUnicornTaco is offline
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Quote:
Originally Posted by 325bim View Post
The difficulty is finding what is the correct part number for the belt, every where I look they either show the belt going around the ps under the alternator with an idler pulley, or describe it as for ac, alt and ps.


Do you have the M roadster, 3.0i, 3.0si, M coupe, or coupe 3.0si?


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Old 08-15-2019, 06:05 PM
325bim 325bim is offline
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3.0i. N52, build date 03/06
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Old 08-15-2019, 06:34 PM
BabyUnicornTaco BabyUnicornTaco is offline
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I see your dilemma clearly. You either need someone with the same setup to post what they are using or you have to measure yourself with some string and then find the right belt. You can run string along the belt route and then measure.


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Old 08-15-2019, 08:53 PM
Andyz4 Andyz4 is online now
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No worries, I have the year and model. On the N52 there is no idler pulley. Serp belt drives only crank, alternator, a/c and belt tensioner. You will need a T60 torx bit on an ratchet/extension to relieve the belt tensioner. Belt is Continental 6K1827 or equivalent. Autozone should have it in stock, as well as the T60 bit.
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Old 08-15-2019, 09:18 PM
325bim 325bim is offline
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Thank you! Do u also have the tensioner part number?
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Old 08-15-2019, 09:42 PM
Andyz4 Andyz4 is online now
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This is the one I bought. https://www.fcpeuro.com/products/bmw...em-11287530314
You will also need an E-14 torx socket to remove the tensioner and replace the stretch bolt (included in kit). FCP also sells this kit with the Conti belt included for a little more. This is a pretty easy job once you remove the plastic radiator cover and airbox plumbing for better access.
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Old 08-16-2019, 06:45 AM
325bim 325bim is offline
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Thanks again!
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Old 08-16-2019, 08:43 PM
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