E30 Secondary Diff Mount (Dual Mount Conversion)

OVERVIEW

If your E30 is making serious power, your differential is seeing serious loads. That's where the E30 dual-mount conversion comes in. An absolute must for V8 swaps. By adding a second mounting point you are effectively spreading the load your stock diff mount and bushing would see. There is a reason that BMW switched to dual mounts on the later models. This conversion was also done in higher-powered cars by Hartge. This will not fit E36ti models or Z3 models. Installation is simple. 6 bolts are all it takes (all hardware is supplied). Simply unbolt the two bolts on your diff cover and bolt ours up. Drill four holes into the trunk and bolt it up. That's it!! Comes with chassis mounting points. This will only work with medium case differentials. It will not work with early model small differentials.

We recommend always using a little blue Loctite to make sure the bolts don't get loose! This is the version we recommend: https://amzn.to/3MWIUlO

Includes

• CNC aluminum diff mount and spacer
• Two 10.9 grade longer diff casing bolts
• Hardware for new diff bushing (diff bushing not included but is an option)
• Heavy-duty mounting brackets (and trunk plate) as well as hardware.
  
• Black  and Red anodized options available
• Standard E30 diff version will come with a spacer for the new mount, all spacers will have a bare machined finish regardless of the anodized color of the mount
• 100% bolt up installation! No differential sensor issues that other conversions have

Select the "Finned MZ3 cover version" if you are running an MZ3 finned cover on your E30. We will then ship you the correct brackets to fit the finned cover. The 2 hole spacer shown in the pictures will not be needed for the MZ3 cover application because it's already offset.

Fitment

• Fits: E30 Models with 188mm Differential (Medium Case) 
  •  Standard Medium Case Diff Cover, and Z3M Finned Diff Cover
• Does NOT Fit: Small Case 168 mm E30 Differentials 
• Does NOT fit: E36ti models or Z3 models
• Does NOT include a Z3M cover (obviously)
• Note: The provided billet spacer may come bare aluminum

Useful Links

• E30 Secondary Differential Mount Fitment Issues Explained

• We recommend always using a little blue Loctite to make sure the bolts don't get loose! This is the version we recommend: https://amzn.to/3MWIUlO