OE-rings - straight cut - Fitting rings with part number O-SPR-AL4-E1 to a transmission with NDTH hydraulic distributor or fitting rings with part number O-SPR-DPO-E1-NDTH to a transmission with a non-NDTH hydraulic distributor causes the destruction of the automatic gearbox. For more info please check our "IDS-AL4(DPO)-E1-Rings" - PLEASE COMPARE THE E1 SEALS WHICH ARE IN THE TRANSMISSION PROPERLY WITH THOSE YOU WISH TO INSTALL