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Message: <blockquote data-quote="thetool" data-source="post: 19937" data-attributes="member: 1534">He He-  I installed a tank heater in a 743 today.  If I'da known, I'da taken some photos.....I had the Bobcat kit, that came with a nipple to replace the drain petcock, a a plastic tee, and some hose clamps and mounting hardware.  There was no hose.Step one:  Remove and discard(or use for emergency toilet paper) the kit instructions....=)Drained the coolant, removed the draincock, and installed the nipple.  Mounted the heater about striaght across from the nipple on the left, with one L-bracket.  5/8" heater hose straight across from the nipple to the tank inlet.Remove the thermostat jumper hose, unless it has a cab heater.  If it does, you have to tee into one of the cab heater hoses.  Anyway, you need 1/2" hose for the thermostat housing nipples, but 5/8" to connect to the tank outlet.I used a brass tee, with 3/8" NPT hose barb fittings, two at 1/2" and one at 5/8".  You just make a bigger loop that used to be your thermostat housing jumper, and have it tee off with 5/8" to the tank outlet.The customer bought the kit, I'm sure it could have been had a lot cheaper from NAPA, but I did need the nipple in the kit, I think it's metric pipe thread for the Kubota block?It was a clean installation with no drilling, the heater is suspended by one L-bracket and two heater hoses.</blockquote>