GL1800 Anti-dive ValveThis is an anti dive valve. This OEM Honda part is designed to replace the original valve mounted on the left fork tube. These are known to fail and cause the front fork to lock up which creates a very rough ride and increases the chance of blowing out a fork seal. This will fit all Goldwing GL1800's from 2001 2005. This will not fit the 2006 2017 models. 51530 MCA 003 Item: H51530 MCA 003 Honda