BMW N52 V-Belt / Tensioner / Guide Pulley / Replacement 

In this video, we're replacing the V-Belt tensioner, the v-belt and the guide pulley on an N52 engine of a BMW E90 330i. As the N52/N53 are made of magnesium alloy, aluminium screws are used for some parts. Here, tightening torque needs to be applied precisely and screws need to be replaced and can't be reused.
Part numbers:
➥ Tensioner: 11288624196
➥ V-Belt: 11287631810
➥ Guide Pulley: 11287535860
➥ Aluminium Screw Tensioner: 11287530315
Kit: amzn.to/2KACDdp
Required tools:
➥ SW-17 socket wrench
➥ E14 outer torx
➥ Torx 60
➥ Torx 20
➥ slotted screwdriver
Required torques:
➥ Guide Pulley: 40 Nm
➥ Tensioner: 25 Nm, then 90°
Repair cost: ~45 EUR (Tensioner), ~20 EUR (V-Belt), ~20 EUR (Guide Pulley)
Difficulty: Easy
Warning: High elastic force at tensioner!
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