The Buckshot Racing #77 Mercury Outboard Anode Kit helps protect compatible Mercury lower units and submerged components from galvanic corrosion, especially in saltwater and brackish-water environments.
 
Galvanic corrosion occurs when dissimilar metals are electrically connected while submerged in an electrolyte such as water. The sacrificial anode is made from a more electrochemically active material, allowing the anode to corrode before the more valuable aluminum and metal components of the outboard.
 
For that reason, anodes are considered normal maintenance items and should be inspected regularly. A common service guideline is to replace an anode when approximately 50% of its original material has been consumed.
 
Mercury Lower Unit Applications
 
This Buckshot Racing #77 anode kit fits a wide range of compatible Mercury lower-unit configurations, including:
 
Option 1 – SportMaster, CLE & Pro Max Lower Units Designed for compatible Mercury Racing and high-performance gearcases, including many SportMaster, CLE and Pro Max applications.
 
Option 2 – FleetMaster 135, 150 & 200 HP Lower Units Fits compatible Mercury FleetMaster lower units used on selected 135 HP, 150 HP and 200 HP outboards.
 
Option 3 – Mercury 3.0L & 3.2L Lower Units Fits compatible Mercury 3.0-liter and 3.2-liter V6 two-stroke gearcases, including many high-performance and heavy-duty applications.
 
Option 4 – Mercury 30–115 HP Jet & Standard Lower Units Also fits selected Mercury 30, 40, 50, 60, 75, 90, 100 and 115 HP jet and standard gearcase applications using the same anode mounting arrangement.
 
Because Mercury used several gearcase and mounting configurations across these engine families, fitment should always be confirmed by the existing anode shape, mounting location and OEM part number.
 
Complete Replacement Kit
 
Each Buckshot Racing #77 Mercury Anode Kit includes the hardware needed to service one compatible application:
 
2 sacrificial anodes
1 stainless-steel mounting bolt
1 mounting nut
 
The included hardware makes the kit a convenient replacement for corroded, missing or heavily consumed original anodes.
 
Replaces Mercury 826134Q & Related Part Numbers
 
This anode kit replaces or cross-references applications associated with: 826134Q, 826134, 826134A1, 826134Q1, 4000333, 401386, 12675, 18-6068 and 41109-ZW1
 
These part numbers are useful when identifying replacement anodes for older Mercury, Mariner and compatible marine gearcase applications where the original number may have been superseded or cross-referenced by an aftermarket supplier.
 
Why Anode Condition Matters
 
An anode must maintain good electrical contact with the lower unit to work correctly. Paint, heavy oxidation, corrosion beneath the mounting surface or improper installation can reduce its ability to provide protection.
 
Anodes should never be painted. The mating surface should remain clean enough to maintain metal-to-metal electrical contact with the gearcase or mounting bracket.
 
If an anode disappears unusually quickly, inspect the boat for possible stray-current corrosion or electrical problems. If it shows almost no wear after long-term water exposure, inspect for poor electrical contact or an incorrect anode material.
 
Buckshot Racing #77 Tech Tip
 
Inspect all sacrificial anodes whenever servicing the lower unit, water pump or propeller. Saltwater and brackish-water boats should generally be checked more frequently than trailer-kept freshwater boats.
 
Replace the anodes when roughly half of the original material has been lost, and inspect the surrounding aluminum for pitting or corrosion at the same time.
 
The Buckshot Racing #77 Mercury 826134Q Anode Kit provides an economical way to help protect expensive Mercury gearcases from galvanic corrosion across a broad range of SportMaster, CLE, Pro Max, FleetMaster, 3.0L, 3.2L and 30–115 HP lower-unit applications.