I HAVE MANY NEW AND USED PARTS FOR M35A2 AND MANY OTHER M SERIES VEHICLES. I ALSO HAVE MANY M35A2 TRUCKS FOR SALE. These also fit the M900 series and M800 series trucks with the NHC250 cummins. THIS IS A NEW RADIATOR CAP WITH CHAIN FOR THE 2.5 TON M35 SERIES WITH THE MULTI FUEL ENGINE.