The Edelbrock #9642/9643 1.81" exhaust valve is a one-piece, swirl-polished stainless steel valve with a hardened tip and undercut stem to increase flow. With a 4.928" overall length, this single valve is specified for #60929 and #60189 cylinder heads and suits Mopar 440 applications when replacing individual exhaust valves.
Edelbrock 1- Exh Valve 1 81 X 4 93 Chrys 60929 Head