Starter relay / Starter solenoid. Most commonly used for (but not limited to) 260cc and 300cc liquid cooled ATV's, UTVs, dirt bikes / pit bikes, scooters, dune buggies, go karts and other similar products. Manufacturer part number 5.3.01.0040. Popularly applies to Buyang 300cc 4x4 ATV, Gio Bear 300cc, Daymak Grunt 300cc, Midwest 300cc, ZMC Titan 300cc, Chironex 300cc Bandito, Asun 300cc Bandito and may apply to other similar variations of 300cc 4x4 ATVs from companies like Linhai, Liangzi, Kangdi and many more. This product has been produced since the early 2000's and applies to almost all variations of the 2x4, 4x4 and 4x4 IRS (Independent Rear Suspension) models. Also commonly used for JCL, Linhai, Xingyue and similar manufacturers. Buyang model name is primarily listed as "Buyang 300cc ATV", "Buyang FA300 ATV", "Feishen FA-H300, FA-D300-4WD, FA-D300-2WD", and generally "Feishen 300cc ATV". Common listed Buyang FA-H300 starter relay part number is 5.3.01.0040 and listed as "STARTER RELAY" in their parts lists.