Interstate-McBee Caterpillar C15 C18 Cylinder Head Assembly MCB2239250AINC *Please Verify OEM Number Before Purchase Heavy Duty Cylinder Head Assembly Fits Caterpillar C15 & C18 Engines With Inconel Intake/Exhaust Valves Precision Machined Heads Arrive With: New Intake and Exhaust Valves New Val... See More