Enginetech Part Number: EHC359-B Bare Cylinder Head Fits Cummins 5.9L 24V Vin C,6,7 Replaces Casting # 3943627 ONLY .2776 Guide ID Valve Head Diameter: Intake 1.299 Exhaust 1.299.
Enginetech Part Number: EHCR239-1 Bare Cylinder Head Fits Chrysler 3.9L 239 ?52cc. Casting #6680 .3126 Guide ID Valve Head Diameter: Intake 1.920 Exhaust 1.624.
Enginetech Part Number: EHCR226R-2 Bare Cylinder Head (Right Hand) Fits Chrysler Jeep 3.7L 226 SOHC Hourglass Shaped Chamber .2752 Guide ID Valve Head Diameter: Intake 1.917 Exhaust 1.457.