HARLEY 61 inch Front MC Cast Knucklehead Cylinder Fits 1936-1940 EL,

Front cylinder fits Knucklehead 1936-1947 61 inch models. Cylinders are for stock bore stock stroke and compression featuring 5 fins. Cylinder have original casting marks of MoCasCo. Set includes 61 inch overhead valve piston ring set. *NOTE: Check ring gap before final assembly. Include casting numbers on cylinder. *NOTE: All cast iron cylinders have same piston to wall clearance .0025 -.003. FITS HARLEY: 1936-1940 EL,