Melling Chain Tensioner - BT5157 Part #: BT5157 Line: MEL Melling Chain Tensioner 1 Year Limited Warranty Height (in): 0.963 Inch Height (mm): 24.46mm Length (in): 1.865 Inch Length (mm): 47.37mm Width (in): 2.205 Inch Width (mm): 56.01mm Adjustable: Yes Bracket Included: Yes Bolts Included: No Mounting Hole Diameter (in): 0.250 Inch Housing Material: Aluminum Instructions Included: No Spring Included: Yes Piston Material: Aluminum 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