MFactory E8x 135i 07-13 (AT) - 3.46 Helical LSD Pumpkin *Includes $500 Refundable Core Fee

MFactory E8x 135i 07-13 (AT) - 3.46 Helical LSD Pumpkin *Includes $500 Refundable Core Fee


Rebuilt Carriers/Pumpkins

Gain a prominent advantage over the competition with an MFactory Rebuilt Carrier/Pumpkin. As one of North America's largest BMW Specialists, we have most popular fitments and ratios in stock at our California-based facility. 

  • Choice of MFactory Helical LSD or Metal Plate LSD:  
Our LSD's are always in stock, offering an unmatched turnaround time!

  • Popular fitments pre-built on-the-shelf: 
Unlike our competitors who may take over 1 week to source parts, we have most popular fitments pre-built on-the-shelf, ready for same-day shipping!

  • 30-Day Core Exchange Program:  
For the utmost in convenience, we offer a core exchange program whereby customers have upto 30 days from receipt of their pre-built carrier to return their old core to us for a $500 core refund

  • Covered by the MFactory Feel The Torque™ 30-Day Money Back Guarantee: (See Mfactory Website for More Details
An Industry First! If you do not feel the difference after installing your new Limited Slip Differential, you may return the product to us for a full refund (excluding shipping costs) within 30 days of the purchase date


  • All rebuilt cores are sourced from low-mileage vehicles
  • All internal parts are checked for wear, cleaned in our steam washer, de-burred then re-assembled within OEM specifications
  • All core housings are cleaned, sand-blasted and repainted, leaving our facility in "as new" condition


TERMS: MFactory Competition Products will provide a limited 1 year warranty for all rebuilt carriers to be free of defects in materials and workmanship upon receipt of product and professional installation. Parts returned must be determined by MFactory Competition Products to be defective before any warranty credit or replacement is issued 

MFactory Competition Products's obligation under warranty shall be limited to repairing or replacing, at its option, any part proven defective. The customer must prepay transportation charges 

Final determination of the suitability of the products for the use contemplated by the buyer is the sole responsibility of the buyer. MFactory Competition Products shall not be liable for any special, direct, indirect, incidental, or consequential damages, that might be claimed as a result of the failure of any part, including claims for delay, loss of profits, or labor 

MFactory Competition Products shall not be liable for any damage or injury to persons or property resulting from improper installation or misuse of any part subject to this warranty 

There are no other warranties expressed or implied extending beyond those set forth above 

INSTALLATION: Any warranty claims arising as a result of the failure of a rebuilt carrier will ONLY be entertained if the rebuilt carrier was professionally installed and was NOT disassembled. Disassembling a rebuilt carrier will invalidate the warranty.