Melling Chain Tensioner - BT5111 Part #: BT5111 Line: MEL Melling Chain Tensioner 1 Year Limited Warranty Height (in): 0.928 Inch Height (mm): 23.56mm Length (in): 1.575 Inch Length (mm): 40mm Width (in): 0.929 Inch Width (mm): 23.6mm 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: Aluminum Number Of Mounting Holes: 2 Gasket Or Seal Included: No Number Of Rows: 1 Shoe Included: Yes Mounting Hole Diameter (mm): 6.35mm Tensioner Actuation Type: Hydraulic Show More Show Less