Sierra 7523 Air Filter For Mercury Optimax
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Keep your Mercury Optimax running clean with a Sierra air filter designed as a replacement for the engine’s intake filtration needs.
Key Features
- Sierra air filter (Part Number: 47-7523)
- For Mercury Optimax applications
- Meets or Exceeds OEM Specs.
- Helps protect the engine by filtering air before it enters the combustion system
Product Compatibility
- Marine outboard engine air filtration (Mercury Optimax applications)
- Routine air filter replacement/maintenance for Optimax engines
Product Details
- Brand: Sierra
- Part Number / SKU: 47-7523
- Product Type: Air Filter
- Meets or Exceeds OEM Specs (per listing description)
Parts Desk Insights
Best Use Case: Recommended for routine maintenance when your Mercury Optimax is due for an air filter service—use it when the air filter element is dirty or degraded to help maintain proper airflow.
Common Issues: Common install mistakes include leaving old gasket/seat material behind or seating the element incorrectly in the housing. Before installation, visually confirm the filter matches the housing and any seals on your engine, and check the surrounding intake connections to ensure a snug fit.
Related Products & Accessories
- Browse Marine Filters - Browse the Marine Filters category to find additional filter types for service kits and maintenance.
- Browse Oil Change Kits - Browse Oil Change Kits for commonly paired maintenance items.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 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.