TRY THERMOKING. THEY ARE A COMPANY THAT HAS ALL THE REFRIGERATED TRACTOR TRAILORS AND THEY DO THEIR OWN MAINT. MY NEIGHBOR HAS A 274 WITH FRONT AND REAR CULTIVATORS, SIDE DRESSER FERT. BOX, GRADER BLADE AND BUSH HOG AND LOVES IT. I LIKE IT AS IT IS LIKE A HOPPED UP CUB WITH A 3PT HITCH. ANYWAY HIS DAD WORKS FOR THERMOKING AND THEY HAD ALOT OF PARTS FOR HIS AIR CLEANER, FUEL FILTER, INJECTORS AND WATER PUMP. I BELIEVE HIS IS A NISSAN MOTOR. THERMO KING HAS A MAINT SHOP IN JUST ABOUT EVERY STATE AND HAVE PARTS FOR JUST ABOUT EVERY SMALL DIESEL MADE