Melling Chain Tensioner - BT143 Part #: BT143 Line: MEL Melling Chain Tensioner 1 Year Limited Warranty Height (in): 3.850 Inch Height (mm): 97.88mm Length (in): 3.954 Inch Length (mm): 100.44mm Width (in): 4.731 Inch Width (mm): 120.18mm Adjustable: Yes Bracket Included: Yes Bolts Included: No Mounting Hole Diameter (in): 0.315 Inch Housing Material: Nylon Instructions Included: No Spring Included: No Number Of Mounting Holes: 2 Gasket Or Seal Included: No Number Of Rows: 1 Shoe Included: Yes Mounting Hole Diameter (mm): 8mm Activation Style: Manual Tensioner Actuation Type: Mechanical Show More Show Less