Get up to +82 hp and +100 lb-ft through a safe and easy to use app-controlled tuning module from RaceChip
Get up to +82 hp and +100 lb-ft through a safe and easy to use app-controlled tuning module from RaceChip
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.
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
This product was last offered at the strikethrough price on
07-21-2026
Unlock hidden M157 power with the UPD Cold Air Induction Kit - OEM style fitment with dyno-proven gains of up to 25WHP!