Exhaust manifold bolt / stud for mounting the heat shield on the passenger side. This is the longer of the two stud bolts. See item 41350 for the short heat shield bolt. For all Mercury Cougar or Ford Mustang, Torino, Cyclone, etc. with Q or R code 428 cobra Jet engines with factory cast iron exhaust manifolds. We also sell the complete bolt kit for the CJ exhaust manifolds. 382803-S