HARLEY Knucklehead Engine Case Set Fits 1941-1947 FL, 1937-1947 EL,

Motor case set features a blank number boss there are no serial numbers on the case. The left side case features detailed shape. Sold with Bill of Sale only. Oil from top end returns through pushrod tubes. Does not return through cylinder base. Case accepts loose roller bearings on the sprocket and pinion shaft side. Case set required line lapping of the main case races. Order case race available separately. Case set is designed for replacement of the original cases. No serial numbers are provided with these case sets. A Bill of Sale will be issued for blank cases. Case sets do not include pinion and sprocket shaft races. *NOTE: Case races should be line bored to 1.500 inch to accept standard rollers. Use 2 gaskets when mounting the oil pump body for proper clearance. **NOTE: Numeral inch7 inch stamped on rear motor mount halves to denote 74 cubic inch. Builder may stamp these numbers in. *NOTE: Must order the following required components separately: cam distributor gear breather gear pump and bushing. FITS HARLEY: 1941-1947 FL, 1937-1947 EL,