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 340iSerpentine Belt Diagram & Size
OEM serpentine belt spec from the factory service manual for the 2017-2019 (2017-2019).
Quick Answer
Routing: REMOVING AND INSTALLING/REPLACING ALTERNATOR DRIVE BELT (B48B) (330I XDRIVE WAGON, 330I GT XDRIVE) REMOVING AND INSTALLING/REPLACING DRIVE BELT FOR ALTERNATOR (N47D20 K/U/O/T 1) (328D XDRIVE WAGON) REPLACING DRIVE BELT FOR ALTERNATOR (340I GT XDRIVE)
Source: Factory service manual — 2017 Bmw 340i 2017-2019.
This vehicle's factory manual
2017 Bmw 340i: confirm the engine, trim, or drivetrain to open the available repair and diagnosis sections.
What You'll Need
Related for Your 2017 Bmw 340i
Frequently Asked Questions
- What size serpentine belt does a 2017 Bmw 340i use?
- Refer to the factory service manual for the exact serpentine belt specification for your 2017 Bmw 340i.
- How do I know if my Bmw 340i 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.