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Home  >  Outboard  >  Mercury Outboard  >  Lower Unit Components | Mercury Outboard  >  Lower Unit Anodes | Mercury Outboard  > Mercury L6 Verado 350HP-400HP Aluminum Anode Kit

Mercury L6 Verado 350HP-400HP Aluminum Anode Kit

Tecno Seal Aluminum Anode Kit for High HP Inline 6 Verado
Item #: 20817  Cross Reference#: 76214, 76214A1, 76214A2, 76214A5, 76214Q5, 76214T3, 76214T5, 762142, 762143, 762145, 8M0001734, 8M0012083, 8M0059339, 8M0116590, 8M0217561, 806105, 826134, 826134A1, 826134Q, 826134T, 847635001, 893404  
Manufacturer Item: 8M0116590
Manufacturer: Tecno Seal
Available: In Stock
Mercury Verado L6
77.29
Each
Quantity:
Quantity Price
1 77.29
L6 Verado Anodes

Tecno Seal Aluminum Anode Kit for Mercury L6 Verado

Mercury L6 Verado 350HP-400HP Aluminum Anode Kit

The Tecno Seal 20817 aluminum anode kit is designed for compatible Mercury L6 Verado 350HP-400HP outboards. This kit helps protect submerged metal components from the harmful effects of galvanic corrosion.

Tecno Seal is a reputable marine anode manufacturer known for producing quality corrosion protection components for Mercury and other major marine applications.

Compatible Applications

Brand Horsepower Range Engine Family Application Notes
Mercury 350HP-400HP Inline 6-Cylinder Verado Compatible high horsepower L6 Verado outboards
High Horsepower L6 Verado Protection:

This aluminum anode kit is intended for compatible Mercury L6 Verado 350HP-400HP outboards and helps protect gearcase, transom, and other exposed metal components from galvanic corrosion.

Inspect anodes annually and replace them when they show heavy corrosion, pitting, or significant material loss.
200HP-300HP L6 Verado Owners:

This 20817 anode kit is for Mercury L6 Verado 350HP-400HP models. If you have a Mercury L6 Verado 200HP-300HP model, use the VER6 anode kit linked below.

What is Included

Included Component Application
Aluminum Anode Set Replacement corrosion protection for compatible L6 Verado models
Transom / Bracket Anodes Corrosion protection for exposed bracket and transom components
Gearcase Anodes Corrosion protection for lower unit and gearcase components
Installation Hardware Anode replacement installation

Other L6 Verado Anode Kit

Complete Your Service

What This Anode Kit is Used For

The Tecno Seal 20817 aluminum anode kit is used to replace worn or corroded sacrificial anodes on compatible Mercury L6 Verado 350HP-400HP outboards.

Sacrificial anodes help protect the gearcase, transom bracket, and other submerged metal components from galvanic corrosion caused by electrical activity in freshwater or saltwater environments.

Periodic anode inspection and replacement is an important part of routine outboard maintenance, especially for boats operated in saltwater or stored in the water for extended periods.

Aluminum anodes are commonly used for modern marine applications because they provide strong corrosion protection in both freshwater and saltwater.

Key Features and Benefits

  • Tecno Seal aluminum anode kit for Mercury L6 Verado outboards
  • Fits Mercury inline 6-cylinder 350HP-400HP Verado models
  • Helps protect gearcase, transom, and exposed metal components
  • Helps protect against galvanic corrosion
  • Designed for fast inspection and replacement
  • Aluminum construction for freshwater and saltwater use
  • Includes installation hardware
  • Supports annual corrosion protection maintenance
  • Quality replacement option from a reputable anode manufacturer

Anode Kit Details

  • Part Number: 20817
  • Brand: Tecno Seal
  • Material: Aluminum
  • Water Type: Freshwater & Saltwater
  • Engine Compatibility: Mercury Inline 6-Cylinder Verado
  • Horsepower Range: 350HP-400HP
  • Installation Hardware: Included
  • Service Area: Transom, bracket, and gearcase anodes

FAQ

What engines does this 20817 anode kit fit?
This kit fits compatible Mercury inline 6-cylinder Verado 350HP-400HP outboards.

Is this the correct anode kit for Mercury L6 Verado 200HP-300HP models?
No. Mercury L6 Verado 200HP-300HP models use the VER6 anode kit, linked above.

Who makes this anode kit?
This 20817 anode kit is made by Tecno Seal, a reputable manufacturer of marine sacrificial anodes and corrosion protection products.

Can aluminum anodes be used in saltwater?
Yes. Aluminum anodes are commonly used in both freshwater and saltwater applications.

How often should I inspect my anodes?
Inspect anodes at least annually and replace them when they show heavy corrosion, pitting, or significant material loss.

Does this kit include installation hardware?
Yes. Installation hardware is included for anode replacement.

Dealer Discounts & Store Policies

Dealer / Marine Industry Discounts

Are you a marine dealer, technician, boat builder, or industry professional? We offer dealer pricing for qualified marine businesses.

Apply for a Dealer Account

Shipping Policy

  • Free shipping on orders over $100 continental U.S.
  • Orders ship via UPS, USPS, and FedEx.
  • Orders received before 5:30 PM EST ship the same business day.
  • Typical delivery time is 1–5 business days.

30-Day Return Policy

  • Returns accepted within 30 days of delivery.
  • Items must be new, unused, and in original packaging.
  • Installed or used corrosion protection components may not be returnable.
  • Return authorization is required before sending items back.

Need help with a return or order question?
Contact Us
Phone: 941-721-3000


Searchable Terms

20817, Mercury L6 Verado 350HP anode kit, Mercury L6 Verado 400HP anode kit, Mercury inline 6 Verado anode kit, Mercury 350HP Verado anodes, Mercury 400HP Verado anodes, Mercury aluminum anode kit, Tecno Seal 20817, Tecnoseal 20817, Mercury transom anodes, Mercury gearcase anodes, Mercury L6 Verado service kits, Mercury L6 Verado 100 hour kit, Mercury L6 Verado 300 hour kit, Mercury corrosion protection kit, VER6, Mercury L6 Verado 200HP-300HP anode kit

Anodes

OEM or Aftermarket
Aftermarket
Manufacturer
Tecno Seal
Material
Aluminum
Spark Plug NGK Iridium ILFR6GE
Verado
 
Item#:
ILFR6GE
Cross Reference#:
8M0006614
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889246Q39
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Cross Reference#:
8M0095658
8M0095659
8M0095659
8M0157616
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18-3214
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43026Q5
43026T10
43026T11
43026T5
43026T6
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9-48313
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