On this parts fiche the Cotter,valve is the most specified component.
The most reasonably priced component used on the Gl1200d Goldwing 1984 (e) E-4 Camshaft-valve is the Seat Valve Spg.
A sample from the products for the E-4 Camshaft-valve include: Spring, Valve, Spg.rock.arm.assi, Valve,exhaust, Collar.a.rock.arm.