Diff Trans (NSW) Pty Ltd is a family owned and operated business specialising in repairs and parts for manual transmissions and differentials. We have combined the experience of 90 years and we are well known for quality workmanship and prompt service. Our machine shop is fully equipped to meet all your needs for different conversions, different housing straightening, bracing, new axles, stud pattern changes, repairing of gearbox components, and tail shaft modifications.