BMW E81 / E82 / E87 / E88 1 Series & E90 / E91 / E92 / E93 3 Series Billet Aluminium Rear Differential Mount Insert Kit 2005 - 2013 (Excludes 1M / M3) Single Turbo This is the structural support

This is the structural support piece—reinstall it when replacing your bumper cover or doing collision repair work

You'll use the same bulb sizes as your original headlight

UV-resistant coating helps maintain long-term finish quality

S13 Silvia / 180SX SR20DET (but not CA18DET)

BMW E81 / E82 / E87 / E88 1 Series & E90 / E91 / E92 / E93 3 Series Billet Aluminium Rear Differential Mount Insert Kit 2005 - 2013 (Excludes 1M / M3) Single Turbo This is the structural supportEliminate rear differential movement and tighten up power delivery on your BMW E8X E9X chassis with this premium billet aluminium rear differential mount insert kit, precision CNC machined from 6061 billet aluminium for permanent durability and dramatically improved drivetrain response. Factory rubber differential bushings on the E8X E9X chassis are notorious for deforming under load particularly when applying or releasing throttle in spirited driving