Air and Fuel Superchargers, Turbochargers and Components

Renntech

Diverter Valve Upgrade with Blow-Off Valve for M157 5.5L V8

$20,640.00

SKU: 09.157.2010

In Stock
In Stock
Ships by Aug 1
Free Shipping over $100
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The RENNtech 3rd Generation Diverter Valve is specifically engineered for the M157 5.5L V8 BiTurbo engine. This performance upgrade incorporates an all-new Blow-Off Valve (BOV) design within re-designed OEM turbo tubes. The valve's construction focuses on enhancing turbo response and potentially altering the exhaust note. This diverter valve is compatible with various M157-equipped Mercedes-Benz models, including the W212 E 63, C218 CLS 63, W166 ML 63 AMG, W231 SL63 AMG, and 63 AMG SUVs. While not a direct performance tuning package, this diverter valve is often part of broader turbo upgrade kits, such as the RENNtech Stage 2 Turbo Upgrade PKG, which has been reported to achieve up to 855 HP and 945 TQ at the crank.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandRenntech
Part Number09.157.2010
CategoryAir and Fuel

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy