This differential cover is 100% bolt-in and made in-house from 6061 aluminum. It includes all hardware and a magnetic drain plug to allow for easy gear oil changes. This is a great way to add form and function to your E8X or E9X! WPI or Whitbread Performance Innovations prides themselves on their quality automotive performance parts, service, custom metal fabrication, and machining. When it comes to machined-in-house goods, look no further!
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