ISDe QSB6.7 Cylinder Head ISB6.7 Engine Head 3977225, 4936081, 5364892 from Factory TPEC

ISDe QSB4.5 Cylinder Head 4941495, 4941496, 5282708 From TPEC Factory

6CT8.3L 21"intake Cylinder Head 3936180, 3802466, 4938632,3973493, 3991152,3936152 from Factory TPEC

6B5.9 Cylinder Head 3966454, 3917287 from TPEC Factory

4B3.9 Cylinder Head 3966448, 3920005 from Factory TPEC

M11, ISM QSM11 Cylinder Head 2864028, 2864024 Factory Replacement

ISB5.9 3943627 (24vales) Cylinder Head From Factory

6CT8.3L 16''Intake Cylinder Head Diesel Engine Head