Uploaded October 2024 | Updated September 2026, 1 day ago

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Let the experts at Mercury Racing return your QC4 engines to like-new condition. Your investment in Mercury Racing QC4 engines places you into an elite circle of owners of the finest high-performance engines on the water. The best way to protect that investment and to ensure you continue to enjoy maximum reliability, durability and performance is to have your engines refreshed at the Mercury Racing factory.