Melling Chain Tensioner - BT431 Part #: BT431 Line: MEL Melling Chain Tensioner 1 Year Limited Warranty Height (in): 1.655 Inch Height (mm): 42mm Length (in): 2.056 Inch Length (mm): 52.22mm Width (in): 2.113 Inch Width (mm): 53.67mm Adjustable: Yes Bracket Included: Yes Bolts Included: No Mounting Hole Diameter (in): 0.335 Inch Housing Material: Cast Iron 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): 8.5mm Tensioner Actuation Type: Hydraulic Show More Show Less