25W-40 Outboard Engine Oil, 4 liter | Sierra 18-9440-3 Fuel Replaces Mercury 38547

Replaces Mercury 38547

you also reduce carbon buildup in the cylinders

but they add a little extra performance boost from the inclusion of a Piranha Hydrofoil Stabilizer

Fiberglass Exhaust Reducer Coupling | Centek Industries 1200161

Original Holley inverted flare fitting

25W-40 Outboard Engine Oil, 4 liter | Sierra 18-9440-3 Fuel Replaces Mercury 3854725W 40 Outboard Engine Oil, 4 liter Sierra 18 9440 3 25W 40 Outboard Engine Oil, 4 liter Sierra 18 9440 3 Sierra's Synthetic Blend oil formulated for the stress endured by outboard engines. Sierra synthetic blend outboard engine oil SAE 25W 40 4 liter jug 4 stroke oil is a blend of premium grade synthetic and mineral based stock with highly refined additives Developed specifically for the marine environment and the high running stresses marine engines