Quicksilver 818298Q1 Aluminum Anode — Mercury & Mariner Power Trim Pump Assembly
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Quicksilver 818298Q1 — Aluminum Sacrificial Anode | Mercury & Mariner Power Trim Pump Assembly
Part Number: 818298Q1 (SKU: 710-97-818298Q1)
Brand: Quicksilver
Official Product Type: Sacrificial Anode — Aluminum
Supersedes: No known superseded number
Replaced By: 818298Q1 is the current active part number
The Quicksilver 818298Q1 is an OEM-specification aluminum sacrificial anode designed to protect the power trim pump assembly on Mercury and Mariner outboard motors from galvanic corrosion. It mounts to the bottom of the power trim pump assembly and is pre-drilled with attaching hardware included for a straightforward installation. Aluminum alloy construction makes this anode effective in both salt and fresh water environments.
Compatible Applications
- Mercury outboard motors with power trim pump assemblies using 818298Q1
- Mariner outboard motors with power trim pump assemblies using 818298Q1
- Mounts to the bottom of the power trim pump assembly
- Salt water and fresh water use
Confirm fitment against your engine model and serial number before ordering. Mercury and Mariner use multiple trim pump anode configurations across their outboard range.
System & Location
Cathodic protection system — power trim pump assembly. Mounts to the underside of the trim pump housing. Protects the trim pump and surrounding metal components from galvanic corrosion.
Anode Material
Aluminum — effective in both salt water and fresh water. Aluminum is the most versatile anode alloy and is suitable for use across a wide range of water conditions.
Kit Contents
- One (1) pre-drilled aluminum anode
- Attaching hardware included
Dimensions & Weight
- Weight: Approx. 120 g / 0.26 lb (estimated)
- Pre-drilled for direct bolt-on installation to trim pump assembly
Service Interval
Inspect at every service or at least once per season. Replace when the anode has been consumed to approximately 50% of its original mass. Do not allow the anode to deplete fully before replacement — a fully consumed anode provides no protection to the trim pump assembly.
Installation Notes
- Mount to the bottom of the power trim pump assembly using the supplied hardware
- Ensure direct metal-to-metal contact between the anode and the mounting surface
- Do not apply paint or sealant between the anode and the mounting surface
- Torque fasteners to specification
Technical FAQ
Q: Does this anode work in fresh water as well as salt water?
Yes — aluminum anodes are effective in both salt and fresh water, making this a versatile choice regardless of where the vessel operates.
Q: Is hardware included?
Yes — attaching hardware is included with this anode.
Q: How do I confirm this fits my engine?
Check your engine model and serial number against Mercury’s parts lookup, or contact us with your engine details before ordering.
Related Parts
Parts Desk Insights
The trim pump anode is one of the most overlooked positions on Mercury and Mariner outboards — it’s tucked away and easy to miss during routine inspection. The most common issue is customers discovering significant corrosion on the trim pump housing after the anode has been fully depleted without being noticed. Checking this anode at every service is a simple step that protects a component that’s expensive to replace. Aluminum is the right alloy here for both salt and fresh water use.
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.