Stock replacement hydraulic cam chain tensionersTensioner housings are precision machined from billet 6061 aluminum, pads are injection molded Nylon with PTFE added to increase wear and friction resistanceTensioners are single piston duplicating the output pressure of stock unitsFeuling tensioners include ARP® 12-point hardwareMade in the USATensioners fit Feuling, factory and SE '07-'17 camplates and conversion camplates designed to run the early '99-'06 camshafts.