New upper spring hat, in durable polyurethane. Helps tighten response of your rear suspension. Recommended installation with original #3041 coil springs, or our special #3004 lowering springs. To assure correct fit, specify year of car or measure inner diameter of mount location on underbody ("early" 1968-1971 GT/Kadett versions are about 3" wide, "later" 1971-1973 GT/Kadett versions are about 3 1/2" wide). 2 required per car. Available in either RED or BLACK