Parts Should Fit if your VIN starts:- 5B4LP57G...- 5B4KP57G...- 5B4KP37G...- 5B4LP37...- 1GBKP37...- 1GBLP37...These are Genuine Workhorse Parts to Complete a Full Brake Job on a 1996-2005 Workhorse or GM P32 Motor Home Chassis.Change quantity of parts to match what you are needing..