9.0L (552 CU IN) V8 1350/1550 QC4V

Verify Your Mercury Racing QC4V Serial Number Range

To ensure 100% accurate fitment for your high-performance engine, select your specific horsepower model and factory serial number range below. Because Mercury Racing frequently introduces engineering supersessions across production runs—affecting critical items like cooling system configurations, electrical plates, and fuel system routing—matching your exact serial number is essential to avoid ordering incorrect components.

Can't find your serial number? It is typically stamped on a metal tag located on the flywheel housing or the cylinder block. Select your matching QC4V (1350 or 1550) breakdown below to access original factory diagrams.