New Step Gap piston ring oil seals for your Garrett T3, T4, T04B, T04E, TA31, TA0301 & TBP4 turbo. One (1) new stepped gap turbine shaft seal and one (1) stepped gap compressor seal. The step gap seal provides a superior seal over the stock style turbine & compressor seals. The design having a stepped end ensures a gapless seal as the steps overlap reducing possible blow by past the seal and into the turbine & compressor housings. Eliminates smoking and oil consumption. Excellent quality parts. Buyer pays $1.50 shipping within the USA. Shipping cost to Canada is $8.00. Shipping cost to all other countries is $12.50. Paypal accepted.