The Nut,square,5mm is the cheapest item from this partsfiche.
A sample from the products for the Cylinder Head include: Nut,square,5mm, Spark Plug(k16pr-u11, Bolt, Flange 6x50, Guide,valve(over.
The Bolt, Flange 6x50 is the most widely applied product in the GL1800A GOLDWING 2001 (1) FRANCE / CMF CYLINDER HEAD ( sixteen times ).