The Rogue Engineering Power Pulley Kit for your E39 M5 consists of pulleys that are CNC-machined from 6061-T6, heat-treated aluminum and specially coated with MIL-A-8625 Type III hardcoat anodized finish. Not to be confused with the cosmetic Type II anodized finish, RE's anodizing actually builds a small surface layer on top of the aluminum, preventing wear. This hardcoat anodize not only offers a true protective layer, but it also has a unique jet-black, gloss finish unlike the dark grey of other hardcoat finishes that actually looks brown. This unique finish is standard on all Rogue Engineering pulleys.
BMW Fitments: 5 Series
Rogue Engineering's power pulley kit effectively reduces the drag on specific pulleys while allowing others to remain at their same efficiency. This kit makes for the perfect blend of daily-driver smoothness with noticeably increased power that's always on tap. Power pulleys don't so much add power as they do to free up existing power that's reduced through drag from accessory pulleys. The RE pulleys are specifically calculated from factory dimensions, so component speeds are safely reduced without any negative effects to their true purpose.
Kit Includes: Power steering pulley, water pump pulley, tensioner pulley, crankshaft pulley, new high-quality A/C and serpentine belts, and installation manual.
NOTE: E39 M5 tensioner pulley requires minor modification of the factory tensioner bracket for installation.
E39 (96-03) > M5 (96-03)