ELM S3227 Fuel Filter — Replaces Sierra 18-7945 (320RRAC01)
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
The ELM S3227 is a replacement inline fuel filter for marine applications, compatible with the ELM 320RRAC01 filter assembly. It is a direct cross-reference for the Sierra 18-7945 filter element, making it a suitable OEM-equivalent replacement for applications where the Sierra part is specified.
This filter is designed to remove particulate contamination from the fuel supply before it reaches the carburetor or fuel injection system, protecting fuel system components from wear and blockage caused by debris in the fuel tank or supply line.
Parts Desk Insights
Best Use Case: This filter is the right choice when servicing an ELM 320RRAC01 inline fuel filter housing or any application calling for a Sierra 18-7945 replacement element. It is a standard annual service item on engines where this filter is installed — replace it at the start of each season or any time fuel flow restriction or contamination is suspected. If you are also seeing water contamination in the fuel, consider adding a dedicated fuel/water separator upstream of this filter.
Compatibility Note: Confirm your existing filter housing part number before ordering. This element is specific to the ELM 320RRAC01 housing and Sierra 18-7945 cross-reference applications.
Related Products: For fuel/water separation, see Water Fuel Separator Filter for Mercury Outboards, Sierra Marine Fuel/Water Separator Filter 18-7862, or the Mercury Outboard Water Separating Fuel Filter Kit 18458Q4. For under-cowl filtration, see the Mercury Outboard Under-Cowl Fuel Filter Kit 35-87946Q04.
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.