Upgrade your M157 AMG or M278 with the UPD Billet Idler Kit - CNC-machined aluminum pulleys built to eliminate factory plastic idler failures and deliver lasting performance and reliability.
Upgrade your M112K with the UPD Billet Idler Kit - CNC-machined aluminum pulleys built to eliminate factory plastic idler failures and deliver lasting performance and reliability.
Upgrade your V12 with the UPD Billet Idler Kit - CNC-machined aluminum pulleys built to eliminate factory plastic idler failures and deliver lasting performance and reliability.
Transfers power from the accessory belt to the alternator rotor
2X Entries For Our 25th Anniversary Sweepstakes! We Price Match - Give Us A Call or Chat! Does Not Fit Bosch Alternators - Only Fits Valeo 120 Amp Alternators From Valeo Number 2542582D - Please Verify Fitment Prior To Ordering
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.
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Mercedes Benz
Lifetime Replacement
