XDP 3/8" Street Performance Pushrods XD387 2017-2020 GM 6.6L Duramax L5P The XDP 3/8" Street Performance Pushrods XD387 will strengthen the weak link in the valvetrain of your 2017-2020 GM 6.6L Duramax L5P. The stock pushrods in your Duramax engine can...