CYLINDER KITS INCLUDING PISTONS, RINGS, LINERS, ORINGS, AND PISTON COOLING NOZZLES INCLUDED R23530612. CAME OUT OF GENUINE DETROIT KIT NUMBER R23537079 6067MK6E. 16.5:1 EGR S60 12L EPA07. ORIGINAL DETROIT PARTS NOT AFTERMARKET.. PLEASE SEND ENGINE SERIAL NUMBER TO ENSURE CORRECT APPLICATION. TOM NEHL TRUCK COMPANY.