Left side engine case features a blank number boss. Left hand case must be fit to existing right side case. Number boss is blank. Will accept Timken roller bearing assembly not included. Cylinder dock height must be machined to match to original right side case experience reqired. Not a bolt on installation. Cylinder base studs breather tube bearing assembly and drain plug all must be purchased separately. Case set required line lapping of the main case races. Order case race available separately. FITS 1955-1964 FL ACCESSORIES 12-0427 - Left Crankcase Main Bearing Set 12-0310 - Left Crankcase Main Bearing Set 16-1264 - Motor Number Stamp Set 10-0398 - Motor Sprocket Shaft TECHNICAL SPECIFICATIONS Suggested to use with #14-0108 Left Engine Seal. Suggested to use with #10-8286 Special Sprocket Shaft Spacer.
