Overview
Dart's Pro1 Mercury Racing 525 style head comes standard with an exclusive chromate finish that inhibits corrosion and extends the life of the head in marine applications. Assembled heads also include inconel exhaust valves to withstand the conditions typical of marine performance engines. Assembled heads also include 1.550 double springs.
Features:
-
Premium C355-T61 aerospace aluminum.
-
Exclusive chromate treatment prevents corrosion in marine engines.
-
Assemblies include inconel exhaust valves.
-
Precision cast ports and chambers.
-
Multi-angle intake seats.
-
Hardened and radiused exhaust seats.
-
Bronze valve guides.
Perfect if you need a little more power or replacement heads for your Mercury Racing 525 EFI motors.
**All heads sold individually**
