Melling Chain Tensioner - BT168 Part #: BT168 Line: MEL Melling Chain Tensioner 1 Year Limited Warranty Height (in): 0.875 Inch Height (mm): 22.22mm Length (in): 2.018 Inch Length (mm): 51.26mm Width (in): 0.849 Inch Width (mm): 21.56mm Adjustable: Yes Bracket Included: Yes Bolts Included: No Mounting Hole Diameter (in): 0.250 Inch Housing Material: Nylon Instructions Included: No Spring Included: Yes Piston Material: Steel Number Of Mounting Holes: 2 Gasket Or Seal Included: No Number Of Rows: 1 Shoe Included: No Mounting Hole Diameter (mm): 6.35mm Tensioner Actuation Type: Hydraulic Show More Show Less