Mercury MerCruiser Quicksilver Aluminum Flat Anti-Vent Plate Anode | OEM 76214T5 | Alpha One Gen II & Bravo

Mercury MerCruiser Quicksilver OEM Aluminum Flat Anode — Part 76214T5

• Part Number: 76214T5
• Brand: Mercury Marine / MerCruiser / Quicksilver (Genuine OEM)
• Official Product Type: Anodes & Corrosion Protection — Anti-Ventilation Plate Flat Anode
• Material: Aluminum sacrificial anode
• System: Anti-ventilation plate — trim tab anode cavity
• Water Type: Saltwater, brackish water, and mixed-water environments
• Sold: Individually
• Weight: approx. 0.2 kg (0.44 lb)

What It Does

The 76214T5 is a genuine OEM aluminum anode plate that fits into the anti-ventilation plate trim tab anode cavity on select Mercury, Mariner, Force, and MerCruiser applications. Unlike a standard projecting trim tab anode, this flat design sits flush in the cavity, providing sacrificial corrosion protection while creating extra clearance for high-rake propellers where a conventional trim tab anode could interfere. It is the OEM solution for setups where prop clearance is a priority without sacrificing corrosion protection on the drive or lower unit.

Compatible Applications

Verify fitment by engine or drive serial number and confirm the anti-ventilation plate anode style before ordering.

MerCruiser Sterndrive

• Alpha One Gen II
• Bravo I, Bravo II, Bravo III
• Bravo X, Bravo XR, Bravo XZ

Mercury & Mariner Outboards

• Mercury / Mariner 35–300 HP outboards (select models — confirm by serial number)

Force Outboards

• Force 90 HP (1995 and newer)
• Force 100 HP (1995 and newer)

Not sure it fits? Send us your Mercury, MerCruiser, or Force engine/drive serial number before ordering.

Related Products

• Mercury Quicksilver Flat Aluminum Anode Plate 76214Q5 — Quicksilver retail equivalent (aluminum)
• Quicksilver Anodic Plate 76214Q5 — same application, Quicksilver packaging
• Quicksilver 76214Q5 Aluminum Anode Plate — anti-ventilation plate fitment
• Martyr Alpha I Gen II Anode Kit — Zinc — complete anode kit for Alpha One Gen II (saltwater/zinc)
• MerCruiser Alpha One Gen II Zinc Anode Kit — full drive anode kit

When to Replace

Anodes are sacrificial by design and must be inspected and replaced regularly to keep the surrounding drive and lower unit components protected. Replace this anode when:

• It is consumed more than 50% of its original size
• It is heavily pitted, cracked, or structurally compromised
• It has become loose in the anode cavity
• Surrounding metal components show signs of galvanic corrosion
• At each annual or seasonal service, inspect and replace if significantly reduced

Do not wait until the anode is fully consumed. Once an anode is depleted, the surrounding drive hardware becomes the sacrificial metal.

Service Interval

Inspect at every haul-out or annual service. In high-corrosion environments (saltwater, marina with mixed hull types, or areas with stray electrical current), inspect every season and replace when consumption exceeds approximately half the original mass. In freshwater, inspect annually — anodes last longer but should still be replaced once visibly reduced.

Installation Notes

• Install into the anti-ventilation plate trim tab anode cavity on a clean, bare-metal contact surface
• Do not paint the anode — paint prevents the electrochemical reaction that makes it work
• Ensure full metal-to-metal contact between the anode and the mounting surface for effective protection
• Do not apply grease or sealant to the contact face
• This flat anode is specifically intended for applications where extra propeller clearance is preferred over a standard projecting trim tab anode
• Tighten mounting fasteners to the torque specification in the applicable Mercury or MerCruiser service manual

Technical FAQ

Q: What is the difference between 76214T5 and a standard trim tab anode?
The 76214T5 is a flat anode that sits flush within the anti-ventilation plate cavity rather than projecting like a standard trim tab anode. This gives extra clearance for high-rake propellers while still providing corrosion protection at the same mounting location.

Q: Why aluminum and not zinc?
Aluminum anodes outperform zinc in saltwater and brackish water because they remain active across a wider range of salinity levels and provide a higher energy output per kilogram. They are the preferred choice for mixed or saltwater environments. For freshwater-only use, magnesium anodes are typically recommended instead.

Q: Does 76214T5 fit all Alpha One and Bravo drives?
It fits select Alpha One Gen II and Bravo series drives, but fitment should always be confirmed by drive serial number and verified against the Mercury parts diagram for the anti-ventilation plate anode position on your specific drive.

Q: How often should I replace my anode?
Inspect at every haul-out. Replace when the anode is consumed by more than half its original size, is cracked or loose, or when surrounding metal shows signs of corrosion. Do not allow the anode to become fully depleted before replacing.

Parts Desk Insights

The 76214T5 is the right choice when a standard trim tab anode creates a prop clearance problem on a high-rake propeller setup — it protects the same location with a flat profile that stays out of the way. The most common issue we see with this part is customers who skip the anode entirely when upgrading to a high-rake prop, then come back later with corrosion on the anti-ventilation plate or drive housing. The flat anode solves both problems at once. One thing to confirm before ordering: make sure the anti-ventilation plate on your drive actually has the cavity for this style of anode — not all Alpha or Bravo configurations are set up for the flat plate. Matching by part number and drive serial is the safest approach.