I have decided to part out a few of my new old stock Onan transfer switch load contactors. I suppose these were made in the 1970s or 1980s and made to last forever. All of these parts are unused. If you need any other parts from one of these big contactors please send me a message. This listing is for a 1 pole set of contact parts. Just what is pictured. 1 moveable contact, 2 stationary contacts, spring, screw, washers and 2 shims. 400 AMP 307-1312 ONAN CONTACT KIT 1 Pole NEW OLD STOCK PULLED FROM UNUSED UNIT acquired from the National Inventory Reserve which was an Onan factory surplus house since the 1960s. According to the parts manual 900-0044 for the AT and LT prior to spec F this contact fits the following transfer switch load contactor units: 307-1207 400 amp 307-1208 400 amp 307-1209 307-1210 400 amp 307-1211 307-1212 307-1220 307-1221 307-1222 307-1223 307-1297 307-1298 307-1299 307-1300 307-1301 307-1387 400 amp 307-1388 400 amp 307-1389 400 amp 307-1390 This contact fits many different Onan contactors above. there may be others too. works for all voltages If you need any other parts from one of these big contactors please send me a message. I have decided to part out a few of my new old stock Onan transfer switch load contactors. I suppose these were made in the 1970s or 1980s and made to last forever. All of these parts are unused. Please click on my Store and look at my other items Please look at my other auctions and put me on YOUR FAVORITES.