Sierra 7918 4-Cycle Outboard Oil Filter
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You have 30 days to request a return. All sale items are final sale.
Sierra 7918 4-Cycle Outboard Oil Filter
A direct-fit oil filter engineered to OEM specifications for compatible 4-cycle outboard engines. The Sierra 7918 is built with the correct thread pitch, bypass valve pressure, and anti-drainback valve design for outboard use — ensuring proper oil pressure and full-interval filtration performance from the first start to the next oil change.
Compatibility Note: Outboard oil filters are engine-specific. Confirm the 7918 is correct for your outboard make, model, and year using Sierra’s current application guide or your engine’s service manual before ordering.
Key Features
- OEM-specification fitment for compatible 4-cycle outboard engines
- Correct bypass valve pressure for outboard oil systems
- Anti-drainback valve design prevents dry starts
- Full-interval filtration performance
- Direct-fit replacement — no modifications required
Other Sierra 4-Cycle Outboard Oil Filters
- Sierra 7896 4-Cycle Outboard Oil Filter
- Sierra 7897 4-Cycle Outboard Oil Filter
- Sierra 7901 4-Cycle Outboard Oil Filter
- Sierra 7902 4-Cycle Outboard Oil Filter
- Sierra 7903 4-Cycle Outboard Oil Filter
- Sierra 7909 4-Cycle Outboard Oil Filter
- Sierra 7913 4-Cycle Outboard Oil Filter
- Sierra 7914 4-Cycle Outboard Oil Filter
- Sierra 7916 4-Cycle Outboard Oil Filter
- Sierra 79062 4-Cycle Outboard Oil Filter
- Sierra 79111 4-Cycle Outboard Oil Filter
- Sierra 79151 4-Cycle Outboard Oil Filter
- Sierra 8700 4-Cycle Outboard Oil Filter
- Sierra 8870 4-Cycle Outboard Oil Filter
- Sierra 57824 Marine Oil Filter
- Sierra 78242 Oil Filter — GM/Chev Short
- Sierra 8779 Marine Oil Filter
Parts Desk Insights
Best Use Case: Best suited as a scheduled maintenance replacement during routine oil changes on compatible 4-cycle outboard engines. The 7918 is a heavier-weight filter (367g) relative to others in the Sierra outboard range, which may indicate a larger filter body suited to higher-displacement outboards — always verify fitment before ordering. Because outboard filters differ in thread pitch, bypass pressure, and anti-drainback valve design, using the wrong filter can compromise oil pressure and accelerate engine wear. Browse the full Sierra outboard filter family above to confirm the correct part number for your engine.
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.