HARLEY 1936 EL Cylinder Head Set Bare Fits 1936-1936 EL,

Bare Knucklehead cylinder head set features a cast iron construction with factory casting marks. This is the exact replica of the 1936 EL models for 61 inch motors. Features a black painted finish. Accepts the inchBaby Butt inch manifold. 1936 head set is the small port type exclusive to 1936 only. Bare heads include valve seats installed. For use with early rocker shafts. *NOTE: Valves nuts round end caps springs brass primer cups and 18mm spark plugs are not included must order separately. *NOTE: Reproduced in Germany by Alez at Motortechnic. Uses 1-3/8 inch large hex 18mm plugs. *NOTE: Accepts large 1-3/8 inch hex Doering #3 spark plug set. *NOTE: Material of valve seats features a better hardenability and heat resistance than 1.2713. Material is tough with high compressive strength and high tempering resistance. Hardness equals 370-415 HB. Tensile strength equals 1250-1400 N/mn2. Condition is tempered. FITS HARLEY: 1936-1936 EL,