Mercedes AMG M157 5.5 V8 BiTurbo Underdrive Crank Pulley (2011 - 2020) W463

Mercedes AMG M157 5.5 V8 BiTurbo Underdrive Crank Pulley (2011 - 2020) W463Fits CLS63, E63, S63, G63, CL63 The Ultimate Performance and Design (UPD) M157 BiTurbo Underdrive, lightweight and strengthened crank pulley is designed to increase power and torque by slowing down the rotation of all the engines accessories. By providing a much lighter crank pulley made of billet aluminum verses low cost cast iron used on the stock crank pulley: Your throttle response, engine performance and MPG will be improved and turbo will rev

(Pics shown are of m157 airbox kit and are examples

Easy installation

The UPD high performance M112K 3 piece idler set will replace your stock plastic double idler pulley assemble and tensioner pulley with a high quality CNC billet aluminum machined performance pulley set

This is the small single 65mm additional idler you need if you already have a 3 piece or 4pc idler kit to finish out all your idlers in the M113k

Order now and unleash the full potential of your luxury ride

Special edition black brackets and silver idler Belt wrap kit and idler pulley

*Easy install

thus increasing power equally across the power band

Installed engine idler colors may not match color but kit shows the black idlers included

high flow 200 cel cats

All M113k engine compatible

enjoy an exclusive discount on your purchase