Superior Millennium Cylinders May be Affected by Bad Intake Valves - Replacement Required!
Owners of recently overhauled or repaired Continental 470-, 520- and 550-series engines should be on the lookout for the use of Superior Millennium Cylinders after the firm published a Mandatory Service Bulletin. The issue lies with Superior brand intake valves, which have been found to be at risk of failure. The affected units have Superior Part Number SA539988, and were shipped between January 20, 2020, and February 23, 2022.