The most reasonably priced component used on the Accord 1999 (x) 2dr Ex Ul Leather (kl) Install Pipe-tubing (excluding '01) is the Clip B 10 Tube.
Some items from this specific schematic: Bulk Tube,f 75x8m, Tube,purge, Bolt,flange,6x12, Joint,purge.
The Install Pipe-tubing (excluding '01) assembly is constructed from several parts from which the Bulk Tube,f 75x8m is the most expensive.
