This oil seal was introduced in 1992 with the first injection models and the HIF38 carb version cars and has the internal spriing closer to the back. Meant to help with extra crankcase pressures and nips up slightly tighter, it has been found to leak on extra high performance engines and the (84/87.13H2934MS) is favoured for this use. All verto clutches with this seal were fitted with a plastic protector shield (84/89.DAM2821), which can be fitted to any clutch seal.