54360 Overdrive Adaptor (to Gearbox casing) in heat treated LM 25 cast alloy (alloy adaptors were used on early DB MkIII overdrive gearboxes just after AM300/3/1401 but changed to cast iron, DB4 4 speed overdrive gearbox adaptors were always alloy), suitably strengthened internally over original cast iron & alloy part, weighs 3 kg less than the cast iron part.

Made to original David Brown / Laycock De Nomanville drawings with minor mods listed as above.

Because it is in alloy, its likely to make the gearbox quieter aswell (over the original cast iron adaptor)