Sierra 9253 Outboard Maintenance Kit | Mercury V6 Optimax 3.0L 2-Stroke (S/N 1B227000+, Non-Pro)
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You have 30 days to request a return. All sale items are final sale.
Complete Service Kit for Mercury V6 Optimax 3.0L 2-Stroke Outboards — One Box.
The Sierra 9253 Outboard Maintenance Kit is a complete, one-box service solution for Mercury V6 Optimax 3.0L 2-stroke outboard engines with serial numbers 1B227000 and up (non-pro models). All components are specifically engineered for this engine family — no guessing on compatibility, no sourcing parts separately.
The 9253 is the largest of the three Mercury Optimax 2-stroke maintenance kits, covering the 3.0L V6 displacement. It includes a water pump kit, fuel filter, and inline oil filter alongside the thermostat and anodes — everything needed for a thorough scheduled service on this engine.
Kit Contents (47-9253)
- Impeller
- Water pump kit
- Thermostat
- Fuel filter
- Inline oil filter
- Anode (aluminum)
- Anode mounting bolt and bolt
Key Features
- All components engineered specifically for Mercury V6 Optimax 3.0L 2-stroke outboards (non-pro models)
- Water pump kit and impeller included for complete cooling system service
- Fuel filter and inline oil filter included for complete fluid system maintenance
- Aluminum anodes for corrosion protection in saltwater and freshwater environments
- Thermostat included to ensure proper engine temperature regulation
Compatible Applications
- Mercury V6 Optimax 3.0L 2-stroke outboard — serial numbers 1B227000 and up, non-pro models
- Confirm your engine serial number and model designation (non-pro) before ordering
Parts Desk Insights
The 9253 is the right kit for a full scheduled service on a Mercury V6 Optimax 3.0L — the largest and most powerful of the Mercury Optimax 2-stroke lineup. At this displacement and power level, staying on top of the water pump impeller and thermostat service is especially important, as an overheating event on a high-output engine can cause significantly more damage than on a smaller motor. Replace the impeller on schedule regardless of apparent condition — impeller rubber degrades with age even without visible wear.
For the smaller Mercury Optimax 1.5L kit, see the Sierra 9251 Kit. For the Mercury V6 Optimax 2.5L kit with full water pump housing, see the Sierra 9252 Kit. For Mercury 4-stroke outboard maintenance kits, see the Sierra 9244 Kit or the Sierra 9250 Verado Kit.
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.