C303, Tgb13 New gearbox arrives June 14, 2014 admin Leave a comment Feeling flush I bought a new zf4hp22 from ashcroft transmissions. One problem with the 300dti drive train is it’s long. This new auto box incorporates a rear end from a v8 gearbox which is 40mm shorter. It all helps (1852) Likes(2)Dislikes(0)