Sierra Ethanol Treatment - Ethanol Fuel Treatment-gal | 18-9777
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Sierra eGuard 18-9777 is a gasoline fuel treatment and stabilizer for two- and four-stroke gasoline engines.
Key Specifications
- Manufacturer part number: 18-9777
- Container: 1 US gallon
- Treat rate: 1 fl oz per 10 US gallons of gasoline
- Helps control gum and varnish and stabilize stored E10 fuel for up to 12 months
Intended Use & Application
Measure according to the bottle label and follow the engine maker's fuel and storage requirements.
Parts Desk Insight
Fuel treatment does not make an otherwise unsuitable ethanol blend compatible with your engine.
Sold individually. Also available in cases of 4.
Freight Alert: In Quantity
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.