Torsen Gleason 4 HA LSD Torque Biasing diff, specially altered & adapted by ourselves to replace the troublesome Original GKN Powerlock (Dana type) diff fitted to the Aston Martin DB7 i6 & DB7 Vantage & derivatives.

This diff has most of the advantages of a plate LSD as originally fitted to a DB7, it has the advantage of being quiet in corners - instead of being noisy in corners like a plate type diff, but if one rear wheel lifts fully of the ground the diff wont lock,

This is a Torsen Gleason gear type diff, which contain no noisy plates rubbing together, it also lasts a lot longer because of this, it uses a normal specification gear oil instead of the very exensive gear oils specified by Aston Martin 

It doesnt push into corners and promote understeer like the original diff as fitted by Aston Martin to the DB7

Can be suppied as unit for you to fit into your casing or we can rebuild your own casing / diff unit

We assemble the diff unit with bearings (Timken where possible) and solid (non crushable) spacers, new oil seals (double lip if possible), new locktabs on output shafts, new crown wheel & pinion if required (priced when work carried out), new HD crown wheel bolts, high temp oil.

If we fit the diff we correct the rear camber & toe whilst refitting.