Additional Details ------------------------------ Product description: Oil pressure gauge: replaces IH part number: 41934 DB w / studs with dash opening of 2'' (52mm) I also sell a Farmall IH 1/4" OD Copper Oil Line Kit from engine block to gauge for fast hook up! compatible with Farmall / IH Tractors: H, M, SH, SM, SMD, SMTA, O, W, SW The gauge also has a 1/8" NPT male nipple, mounting studs and bracket. It has a nice 6 or 12 volt light feature included so owner has option to use or not to use! Thank you for looking Vardia Enterprises