Transform your BMW E46's driving dynamics with our comprehensive ZF Plated Limited Slip Differential (LSD) Installation Kit. Designed to fit perfectly into the E46 188K differential found in a variety of models from 320Cd M47N to 330xi M54, this kit provides everything needed to upgrade your vehicle with a high-performance LSD from E30, E36, and E34 models. What’s Included in the Kit: All necessary components to install a ZF plated LSD found in E30, E36, and E34 models into an E46 188K diff type. Customizable Crown gear spacers tailored to different differential gear ratios. Key Benefits: Cost-Effective Performance Upgrade: Installing a ZF plated LSD is more economical than purchasing a new aftermarket unit, especially when combined with our Performance Packs tailored for various racing disciplines and street performance. Enhanced Durability and Functionality: We recommend refreshing the LSD unit prior to installation, as many used units are over 25 years old with worn factory friction discs. Installation Ease: Step-by-Step Guidance: The kit includes a complete tutorial on swapping an E30/E36/E34 LSD unit into an E46 differential housing, ensuring a smooth and successful installation. Video Resources: Access our detailed video tutorials to learn how to rebuild the 188mm LSD unit and optimize it for your driving needs. It is the most cost effective way to put a proper LSD unit into E46 188K diff type found in the following models: 320Cd M47N 320Ci M54 320d M47 320d M47N 320i M54 323Ci M52 323i M52 323i 2.4 M52 325Ci M54 325Ci M56 +325i M54 +325Ci M54 +325Ci M56 +325i M54 +328i M52 +330Ci M54 +330i M54 +330xd M57 +330xd M57N +330xi M54 We advise you to refresh the LSD unit prior installation into E46 differential housing, as used units are 25+ years old and probably have factory friction discs which are worn out. Important Note: Please specify the required Crown gear spacer thickness based on your differential's gear ratio when ordering to ensure a perfect fit and optimal function. E46 Differential ratios  188mm LSD unit(2.65 - 3.07) 188mm LSD unit(3.15 - 4.45) Low range (2.37 - 2.87) 7,15mm spacer No spacer needed Mid range (2.93 - 3.07) 12,15mm spacer 5,15mm spacer High range (3.15 - 4.45) 19,15mm spacer 12,15mm spacer