The Iseki TK37 is a compact utility tractor produced from 1996 to 2001 as part of the TK Series by Iseki. It features a 36.5 hp Isuzu 2.0L 4-cylinder diesel engine, 16-speed transmission, and four-wheel drive. The tractor offers a two-post folding ROPS with an optional cab. It has a wheelbase of 73 inches and weighs between 3759 and 4134 pounds depending on configuration. Standard tires are 8-18 front and 13.6-26 rear. The rear PTO operates at 540 rpm with multiple engine RPM settings. Electrical system is 12 volts with a 95 AH battery and negative ground. The TK37 is related to the TK41 model.