BMW 2.5L M54 DISA Valve Repair & Upgrade Kit - For 2.2 & 2.5L Engines Only, 3.0L Version is available as Seperate Kit. Fit the following BMW models with 2.5L & 2.2L M54 engine: E36 Z3 2.5i, E39 525i, E46 3201, E46 325i, E46 325Ci, E46 325xi, E60 525i, E83 X3 2.5i, and E85 Z4 2.5i Roadster. DISA housing will show BMW part number 7544806 or 7502269. NOTE: THIS KIT FITS 2.5 & 2.2 LITER BMW MODELS ONLY, SEE SEPERATE LISTING FOR 3.0 LITER MODELS. DOES NOT FIT 2.5L M56 ENGINES. Designed & Manufactured in the USA by BMW Specialists with a Limited Lifetime Warranty. Precision CNC Machined from Aircraft Grade Aluminum and Titanium Alloys. Don't accept cheaply made "Copy Cat" kits or failure prone plastic replacements. Purchase with confidence from the company that invented the "DISA Repair Kit" The German Auto Solutions DISA Repair Kit includes a precision machined black anodized aluminum flapper valve, precision machined black anodized aluminum bell crank lever, precision machined titanium pivot screw, stainless steel lock washer and a new silicone main housing o-ring seal. We also include everything you need to easily & accurately install our kit. The German Auto Solutions DISA Repair Kit includes a link to the most detailed on-line installation instructions in the industry.