Qbace Crank Seal Remover And Installer Kit Allows the crank seal to be replaced without dismantling the crank case saving your time and costs. Do not Mworry about scraping the crank surface. Universal use covering a wide range of cars with oil seals between 27mm and 58mm in diameter. Use the existing bolt in the vehicle for installation. Screw-type adapter to fit the centering. The blue seal adapters are made of aluminum to prevent the damage of crank.