7 Automotive and engine components, namely, cylinder heads, intake manifolds, pistons, valve covers, camshafts, rocker arms, internal combustion engine intake and exhaust valves, valve springs, valve covers, valve lifters, pushrods, [ gaskets for oil pans, ] intake and exhaust manifolds, valve covers, [ and timing cover gaskets, complete stoker kits comprised of a rotating assembly, crankshaft, pistons, rings, and connecting rods, ] exhaust manifolds in the nature of headers, mufflers, [ exhaust systems comprised of mufflers, pipes, headers, hangers, and clamps, harmonic balancers for internal combustion engines in the nature of crank pulley dampers, torsional dampers and vibration dampers, ] automotive and marine engine oil pans, [master cylinders, ] ignitions for internal combustion engines of automobiles and boats, [ sparkplug wires, ] automotive and marine engine fuel pumps, and carburetors