Deflection/Idler Pulley, OEM - N55 F22 F30 F32 X3 X4 X5 X6 35i, S55 M2/M3/M4 - 11288673720

OEM idler pulley to keep your belt running quiet and true on N55 and S55 powered BMWs

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Price:
$33.28

The N55/S55 deflection, or idler, pulley is located separate from the tensioner pulley and guides the belt around other accessories. The pulley contains a set of bearings, that when worn, will produce a screeching or rumbling sound. It's important to inspect and replace the pulley regularly. Spin the pulley by hand and listen for grinding or rumbling sounds and if there is resistance. All of these are signs of bad bearings. The pulley wheel is made of plastic and they are known to crack and snap and get flung around the engine compartment. They can damage your radiator, hoses, fan, and other critical items that will lead to a more expansive/expensive repair. Since the deflection pulley is bolted in place, not pressed on, it is easily replaced during a routine belt change.

NOT for the earlier N54 twin turbo engine cars. For cars with the N55 "TwinPower" engine and S55 M engine. If your BMW is a pre-2011 model, this is likely not the style belt idler / roller pulley you need. 

This pulley is manufactured by INA, the original supplier to BMW for this part and other pulleys. Since it is an OEM part, it conforms to the original design that BMW specified for the engines listed above. It comes with a two year warranty.

BMW Fitments:

2 Series
F22 / F23 (2014+) > M235i
F22 / F23 (2014+) > M235i xDrive
F22 / F23 (2014+) > M235i-Racing
F22 / F23 (2014+) > M240i-Racing
2 Series
F87 (2016+) > M2 Competition S55 (2019+)
F87 (2016+) > M2 N55 (2016-2018)
3 Series
F30 / F31 / F34 (2012+) > 335i
F30 / F31 / F34 (2012+) > 335i xDrive
3 Series
F80 (2015-2018) > M3 (2015-2018)
4 Series
F32 / F33 / F36 (2014+) > 435i
F32 / F33 / F36 (2014+) > 435i xDrive
4 Series
F82 / F83 (2015-2020) > M4 (2015-2020)
5 Series
F10 / F11 (11-16) > 535i
F10 / F11 (11-16) > 535i xDrive
6 Series
F12 / F13 (12-18) > 640i
7 Series
F01 / F02 (2009-2015) > 740Li
F01 / F02 (2009-2015) > 740i
X3 Series
F25 X3 (2011-2017) > X3 xDrive35i
X4 Series
F26 X4 (2015-2018) > X4 35i xDrive
X5 Series
E70 X5 (07-13) > X5 xDrive35i
X5 Series
F15 X5 (2014-2018) > X5 sDrive35i
F15 X5 (2014-2018) > X5 xDrive35i
X6 Series
E71 X6 (2008-2014) > X6 xDrive35i
X6 Series
F16 X6 (2015-2019) > X6 sDrive35i
F16 X6 (2015-2019) > X6 xDrive35i
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