Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2017 Bmw 320iSerpentine Belt Diagram & Size
OEM serpentine belt spec from the factory service manual for the 2015-2018 (2015-2018).
Quick Answer
Routing: N20/N26 engine: - REPLACING DRIVE BELT FOR A/C COMPRESSOR (N20) - REPLACING DRIVE BELT FOR ALTERNATOR (N20/N26) N55 engine: - REPLACING DRIVE BELT FOR ALTERNATOR (N55 ) N47 engine (diesel): - REPLACING DRIVE BELT FOR ALTERNATOR (N47)
Source: Factory service manual — 2017 Bmw 320i 2015-2018.
This vehicle's factory manual
2017 Bmw 320i: confirm the engine, trim, or drivetrain to open the available repair and diagnosis sections.
What You'll Need
Related for Your 2017 Bmw 320i
Frequently Asked Questions
- What size serpentine belt does a 2017 Bmw 320i use?
- Refer to the factory service manual for the exact serpentine belt specification for your 2017 Bmw 320i.
- How do I know if my Bmw 320i serpentine belt is bad?
- Common signs include squealing on startup (especially when cold), visible cracks or fraying on the ribbed side, power steering or A/C failure, and battery warning lights. The factory manual includes inspection criteria and replacement intervals.