Sierra 8779 Marine Oil Filter
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Sierra 8779 Marine Oil Filter
A high-efficiency oil filter built to OEM specifications for marine engine applications. The 8779 features an epoxy-coated interior that resists corrosion from the moisture-rich environment onboard — a critical detail for engines that sit between uses or operate in saltwater conditions. Designed as a direct-fit replacement for compatible marine engines.
Key Features
- Meets OEM specifications for marine use
- Epoxy-coated interior for corrosion resistance
- High-efficiency filtration media
- Direct-fit replacement design
Compatibility Note: Verify fitment against your engine make, model, and year before ordering. Refer to Sierra's current application guide for confirmed fitment data.
Related Products
- Sierra Marine Oil Filter — GM L4, L6 & V8 Short Style (47-78242)
- Sierra Marine Oil Filter — GM Chevrolet Long Style (47-78761)
- Sierra Marine Premium Marine Oil Filter (18-7824-2)
- Sierra Marine Fuel/Water Separating Filter — 18-7789
- Sierra 7720 In-Line Fuel Filter
- Sierra 7523 Air Filter for Mercury Optimax
Parts Desk Insights
Best Use Case: Best suited as a routine maintenance replacement filter for compatible marine inboard and sterndrive engines. The corrosion-resistant epoxy interior makes it a strong choice for boats stored in humid or saltwater environments where standard automotive filters would degrade prematurely. Always cross-reference your engine's service manual or Sierra's application guide to confirm the 8779 is the correct filter for your specific engine — fitment data is not stored on this listing.
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.