Mercury 8M0177478 Replacement O-Ring for Select Mercury 7.6L V12 500-600hp Outboards FORCE-20 Black with 3 MOA Dot

Black with 3 MOA Dot reticle

The molecular fused jacket totally eliminates component separation and builds balance

This kit is one of the most complete available to repair four-stroke outboard water pumps

Hollow-Ace is much easier to thread than other hollow-core products

Mercury 8M0177478 Replacement O-Ring for Select Mercury 7.6L V12 500-600hp Outboards FORCE-20 Black with 3 MOA DotProtect your small to mid range outboard from galvanic corrosion with this sacrificial aluminum anode set. Aluminum anodes provide more active protection and last longer than zinc, especially in low conductivity freshwater. This kit includes the installation hardware required for a fast replacement of corroded anodes, helping you maintain the structural integrity of your engine's gearcase. Fits mid range Mercury Mariner 2 stroke and 4 stroke outboards