Precision Works E55 5.5 AMG M113K Supercharger Pulley 83mm Upgrade

Precision Works E55 5.5 AMG M113K Supercharger Pulley Designed & improved from the Mercedes factory supercharger pulley, Precision Works pulley is CNC machined from billet aluminum, 83.9mm diameter, and increases the boost pressure by approximately 2.5 psi. We utilize the same OEM Mercedes bearing, made by Nachi in Japan, to ensure durability and lasting performance. 83mm, increase 2.5 psi of boost OEM bearing by Nachi Japan Billet and lightweight Reduce rotational mass Increases horsepower & torque Factory part number reference: A1130900044 Fitment: 2003 - 2007 Mercedes Benz 55K models E55, CLS55, S55, CL55, G55