Melling Chain Tensioner - BT5501 Part #: BT5501 Line: MEL Melling Chain Tensioner 1 Year Limited Warranty Height (in): 0.850 Inch Height (mm): 21.71mm Length (in): 2.160 Inch Length (mm): 54.86mm Width (in): 1.703 Inch Width (mm): 43.26mm 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