Call 01772 329920 ask for kieran - hes my old pal at Renault and will do you a new one for £495 + vat with a 12 month warranty ( QUOTE MATT ). This is on an exchange basis and he will need your old gearbox back when you go to collect the new unit.

The code for a williams Gearbox is JC5 014 - 7701352174 Retail £627.92 + vat.

( OVAL PLATE IS C57M Gunner ;) )