Protect your engine against harmful harmonics at all RPM levels - 10% Underdrive to increase usable horsepower without greatly affecting engine accessories
Applies tension to the accessory belt to prevent slippage
5X Entries Into Our F80 M3 Sweepstakes We Price Match - Give Us A Call or Chat! For Pre-LCI models only without the Energy Recovery System
Maintain proper accessory belt tension and protect your engine’s drive system with this OEM-quality replacement automatic belt tensioner from Febi Bilstein.
Applies tension to the accessory belt to prevent slippage
We Price Match - Give Us A Call or Chat! For Pre-LCI models only without the Energy Recovery System
Replace your failing harmonic balancer and address your leaking front crank seal with this replacement kit
For 2018-2021 models years with the Gen1 & Gen2 B58 engines
Brand:
ES#:
5444830
Mfg#:
11239846660KT
Back Ordered
$933.00
This product was last offered at the strikethrough price on 03-11-2026
Pulleys drive accessories essential to vehicle operation. Whether you need to install a stock original equipment pulley during a repair, or improve engine performance and appearance with a lightweight aluminum or underdrive pulley, count on ECS Tuning for pulley solutions that work.
Lifetime Replacement
