Excellent reproduction of the thermostatic choke well cup & gasket used on 1970-72 Big Block and 1971-72 Small Block applications except Six Pack. Cup is formed from the correct gauge stainless steel with all the features of an original part. Gasket is die cut from the correct thickness high temperature gasket material. Located between the thermostatic choke and intake manifold. Reference Chrysler part numbers 2951 544 & 2951 545.