BMW N55 Serpentine Belt System Replacement DIY (2010-2016 BMW F10 535i)

►The serpentine belt, also called the accessory or drive belt, can be responsible for several functions on an engine. In the case of BMW's N55 engine in the F10 5-Series, duties are limited to the A/C compressor and alternator, so replacing it is a very straightforward task. A typical lifespan is around 65,000 miles, but you won't want to wait until it fails for replacement.

The system consists of the main belt, a mechanical tensioner, and a couple of pulleys to keep everything on track. The belt is rubber, so it'll harden and crack over time. Pulley life is similar to the belt, but they should be replaced together if well used. A seized pulley will snap a belt with ease. Even a tensioner can go wrong, and while rarer than the other two failures, it's just as critical to replace it with everything else.

In this video, FCP Euro's Professional DIY'er, Mike Hidalgo, replaces the accessory drive system on a BMW N55 engine.

00:00 - Intro
01:50 - Tools Needed
03:15 - Getting Access to the Drive Belt System
09:30 - BMW N55 535i Serpentine Belt Removal
10:40 - BMW N55 535i Serpentine Belt System Replacement
18:42 - Cleaning up the Engine Bay
26:01 - Wrap-up

Shop the parts used in this video:
BMW 535i Drive Belt Kit: https://www.fcpeuro.com/products/bmw-...

BMW Hex Bolt: https://www.fcpeuro.com/products/bmw-...

This video applies to the following vehicles (& more in the product link):
BMW 535i
2011 BMW 535i Accessory Drive Belt Kit
w/o Dynamic Drive (S229A) or Chassis & suspens. setup"Adaptive Drive" (S2VAA)
2012 BMW 535i Accessory Drive Belt Kit
w/o Dynamic Drive (S229A) or Chassis & suspens. setup"Adaptive Drive" (S2VAA)
2013 BMW 535i Accessory Drive Belt Kit
w/o Dynamic Drive (S229A) or Chassis & suspens. setup"Adaptive Drive" (S2VAA)
2014 BMW 535i Accessory Drive Belt Kit
w/o Dynamic Drive (S229A) or Chassis & suspens. setup"Adaptive Drive" (S2VAA)
2015 BMW 535i Accessory Drive Belt Kit
w/o Dynamic Drive (S229A) or Chassis & suspens. setup"Adaptive Drive" (S2VAA)
2016 BMW 535i Accessory Drive Belt Kit
w/o Dynamic Drive (S229A) or Chassis & suspens. setup"Adaptive Drive" (S2VAA)

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