Home / Lawn & Garden / Parts / Lawn Tractor Ignition Key 1717163SM Lawn Tractor Ignition Key 1717163SM$13.31 Price may not be up-to-date. In Stock View Product Part Number: 1717163SM Brand: MURRAY INC Seller: Sears PartsDirect Categories: Lawn & Garden, Parts Not Returnable Description This ignition key (part number 1717163SM) is for lawn tractors. Use ignition key 1717163SM to start the tractor. Follow the directions in the owner’s manual for installing this part.