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Seems Legit Garage

SLG - Non-M HD Differential Mount Kit

SLG - Non-M HD Differential Mount Kit


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Regular price $125.00 USD
Regular price Sale price $125.00 USD
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Another E46 part designed from the ground up by SLG that nobody else offers! This is for when you need the next level of protection from subframe and axle failures! 

The factory E46 differential mounting leaves so much to be desired for many reasons as explained below:

  • Power is unevenly distributed through the subframe to the vehicle floor, causing twisting and the notorious cracking of E46 subframe mounting areas
  • The diff is held with little leverage, and twists more than you think. With high power and/or clutch kicks we have seen bent front bolts and broken rear mounts in many cars
  • The moving diff contributes to blown axle CV joints aka broken axles
  • We just plain broke the rear mount on our 330. Race car problems!

So, take advantage of what is a power capable diff (up to ~400hp) and dont bother upgrading to an M3 subframe setup. Our kit bolts between the diff and the diff cover. It then attaches to the subframe via two weld-on tabs. Laser cut from steel in the USA.

Kit Contents:

  • Differential plate
  • Two Subframe mounting tabs
  • Two heavy duty mounting bolts
  • Install Instructions

    • Remove differential from subframe, and cover from diff.
    • Install the large plate, using differential seal RTV between the diff and plate, and plate and diff cover.
    • Torque bolts to 30 ft/lbs after RTV has cured for an hour. We recommend using longer bolts to get more thread engagement and not strip the case. 30mm with a washer is ok if using stock cover.
    • Install diff back into the subframe.
    • Weld on the first mounting tab after loosely securing it to the diff plate, while the diff is still bolted to the original rear mount for placement.
    • Remove the diff and cut off the original rear mount.
    • Install the diff using the front mounts and first tab you welded on. Loosley bolt on the second tab and weld on.
    • Remove diff and finalize welding.
    • Paint, what you like, install diff, and go rip
  • Terms and Conditions

    Due to the intended use of high performance products, Seems Legit Garage, LLC. ("SLG”) products and each part thereof, are sold "AS IS” and with all faults. To the fullest extent allowed by law, SLG Racing Products makes NO written, oral, expressed, or implied statement of warranty or guarantee on any product or part sold. SLG will not be liable for any direct, indirect, incidental, consequential, or special damages, including but not limited to, damage, injury, loss of life, loss of property or equipment, loss of profits or revenue, or claims from any individual or entity arising from the use of any SLG product. 

    RACING IS A DANGEROUS ACTIVITY AND PURCHASERS OF SLG PRODUCTS ACKNOWLEDGE THE INHERENT RISKS ASSOCIATED. SLG MAKES NO REPRESENTATIONS THAT ITS PRODUCTS CAN REDUCE OR ELIMINATE ANY SUCH RISK. SLG products are NOT FOR STREET, HIGHWAY, OR AIRCRAFT USE and are intended ONLY for race vehicles operated on closed-course facilities or race tracks with appropriate supervision of qualified technicians or mechanics to ensure that the safety needs of the race driver and others are met. SLG products could be combined with other products or parts which may not be suitable and could adversely affect performance of other race parts or the vehicle. The user shall determine the ultimate suitability and safety of the product for its intended use, and the user assumes all responsibility and risk in connection therewith. 

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