Zinc OMC Curved Block Anode CMT-431708Z
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You have 30 days to request a return. All sale items are final sale.
The CMT-431708Z is a curved block zinc anode designed for OMC sterndrive systems, providing essential protection against galvanic corrosion for the outdrive and surrounding underwater components.
Its curved profile is engineered to match the contour of the drive housing, ensuring proper fitment and consistent electrical contact. Manufactured from marine-grade zinc, this anode is ideal for saltwater applications, where zinc remains the preferred material for reliable corrosion protection.
Key Features
- Curved block design for OMC outdrives
- Marine-grade zinc construction
- Protects drive housing and internal components
- Contoured fit for proper mounting and contact
- OEM-style direct replacement
- Ideal for saltwater use
Application / Compatibility
Fits:
- OMC sterndrives (various models using curved block anodes)
- Cobra and similar OMC drive systems (verify fitment)
✔ Common on:
- Older OMC outdrive platforms
- Saltwater-operated sterndrive boats
Serial Number Fitment Notice
Always confirm:
- Drive model (OMC / Cobra variant)
- Anode shape and mounting pattern
- Bolt spacing and curvature match
When This Part Needs Replacement
- Anode is 50% or more consumed
- Uneven or accelerated corrosion
- Visible corrosion on outdrive
- Routine haul-out or service interval
Installation Notes
- Mount to clean, bare metal surface
- Ensure full contact along curved mounting surface
- Do not paint the anode
- Tighten securely using correct hardware
- Inspect bonding system if wear is uneven
Alternate / Cross-Reference Part Numbers
- Camp Company: CMT-431708Z
- OMC OEM: 431708
- Aluminum equivalent available for brackish/mixed water
- Magnesium version available for freshwater
Parts Desk Insight
Curved block anodes are critical on OMC drives because they match the housing profile—a flat anode won’t provide proper contact. For boats staying strictly in saltwater, zinc remains the safest and most proven option.
Shipping
Shipping: Ships same or next day for fast Canada wide shipping. ⚓
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.