Collection: BMW Welded Diff Conversion Kits

The BMW Welded Diff Conversion Kit is designed for customers who want to send us their original open or LSD differential and ring gear for modification. This service is essential for BMW models with a BMW welded diff, most commonly the E36, E46 and E9x, where the factory ring gear is friction-welded to the differential.

Professional Conversion Service

As part of the BMW conversion kit service, we take your supplied welded diff and ring gear, separate them, and then carry out precision machining. The ring gear is drilled and threaded to specification, allowing it to accept bolts for a secure and reliable fitment. Our experience working with top car differential manufacturers ensures accuracy and durability throughout the process.

What the Service Includes:

• Separation of factory welded differential and ring gear
• Machining, drilling, and threading of the ring gear
• Preparation for bolt-on installation with aftermarket LSD units
• Option to have the modified setup installed into your existing axle (additional service available)

Reliable Upgrade with Trusted Suppliers

By choosing our BMW welded diff conversion service, you benefit from working with experienced technicians and leading differential suppliers. This ensures your BMW, whether an E36, E46 or E9x, is equipped with a strong, reliable setup ready for performance applications on the road or track.