Sierra 18-2011
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Within 30 days
Sierra 18-2011 Product Description
Enhance Your Outboard Engine Reliability with the Sierra 18-2011 Oil Seal
Keeping your marine engine running smoothly starts with quality components like the Sierra 18-2011 oil seal. Designed as a direct replacement for Mercury part 26-90562, this robust seal prevents oil leaks and maintains optimal lubrication in demanding boating conditions. Boat enthusiasts know that even minor leaks can lead to bigger problems, such as reduced performance or engine damage from contamination. The Sierra 18-2011 steps in as a trusted aftermarket solution, engineered to match or exceed original specifications for seamless integration.
What sets this oil seal apart is its precision construction using high-grade materials that resist heat, pressure, and corrosion from saltwater exposure. Whether you're cruising coastal waters or tackling rough inland lakes, it delivers long-lasting protection, helping you focus on the adventure rather than unexpected repairs.
Perfect Fit for Popular Mercury Outboard Models
This Sierra oil seal is compatible with a wide range of Mercury and Mariner outboards, particularly those in the inline and V6 series from the 1970s through the early 2000s. It's commonly used in crankshaft applications where reliable sealing is critical for powerhead integrity. Before installation, double-check your engine's serial number against manufacturer cross-reference charts to ensure a perfect match—peace of mind comes from knowing it fits without modifications.
Key Features and Specifications
- Material Excellence: Nitrile rubber compound for superior oil resistance and flexibility.
- Dimensional Accuracy: Matches OEM inner and outer diameters for drop-in installation.
- Durability Boost: Handles high RPMs and thermal cycling without hardening or cracking.
- Cross-Reference: Direct substitute for 26-90562 and related 55-series seals.
- Easy Maintenance: Simplifies routine powerhead servicing during off-season prep.
Pro Tips for Installation and Long-Term Care
Installing the Sierra 18-2011 is straightforward for DIY mechanics. Start by draining the oil and removing the crankshaft components carefully to avoid damaging adjacent parts. Use a seal driver tool for even seating, and apply a light coat of marine-grade lubricant to the lip. Torque to factory specs—overtightening can deform the seal. After reassembly, run the engine at idle to check for leaks, then monitor during the first few outings.
To extend its life, integrate regular oil changes with high-quality synthetic blends and inspect seals annually. Pair it with other Sierra engine parts for a complete refresh, reducing downtime and boosting resale value on your vessel. Proactive upkeep like this keeps your outboard humming efficiently season after season.
Why Sierra Engine Parts Lead the Marine Aftermarket
Sierra has built a reputation for affordable, high-performance alternatives that rival dealer pricing without skimping on quality. Independent tests show their seals maintain sealing integrity longer than generics, thanks to rigorous manufacturing standards. Boaters rave about the cost savings—up to half off OEM—while enjoying the same reliability. It's not just a part; it's an investment in uninterrupted time on the water.
Frequently Asked Questions
What does the Sierra 18-2011 oil seal replace?
It directly replaces Mercury OEM part 26-90562 and is cross-compatible with various 55-series seals in select outboard powerheads.
Which Mercury outboard engines is the Sierra 18-2011 compatible with?
It's designed for many Mercury and Mariner inline and V6 models from the 1970s to early 2000s. Verify using your engine's serial number and service manual.
How do I know if my engine needs a new oil seal like the 18-2011?
Look for oil residue around the crankshaft area, low oil levels without visible external leaks, or smoke from burning oil during operation.
Is the Sierra 18-2011 easy to install for beginners?
Yes, with basic tools and a service manual. Use a seal installer to prevent damage, and follow torque specs for best results.
Can this seal handle saltwater environments?
Absolutely. Its corrosion-resistant materials make it ideal for both freshwater and saltwater use in marine outboards.
How often should I replace the oil seal in my outboard?
Inspect every 100-200 hours of operation or annually. Replace if you notice leaks or during powerhead rebuilds.
Does Sierra offer warranties on parts like the 18-2011?
Sierra provides manufacturer warranties; check details at purchase for coverage specifics.
Upgrade your outboard's performance today with the Sierra 18-2011 oil seal. Reliable sealing means more reliable boating—grab yours and hit the water with confidence.
Save $4 when you buy the Sierra 18-2011 for only $13 from NVN Marine! Same day shipping before 3pm.
Sierra 18-2011 Technical Specifications
| Type: | |
|---|---|
| Vendor: |
Sierra Engine Parts |
| Weight: |
0.02 lb |
Sierra 18-2011 User Reviews
Sierra 18-2011 Shipping & Return
| Shipping Weight: |
0.02 lb |
|---|---|
| Box Sizes: |
0.00 (h) x 4.00 (w) x 5.00 (l) |
| Cubic Feet: |
0.0 |
| Returnable: |
Yes |
For detailed shipping policy please check our Shipping Policy and you can find our Return and Refund Policy here.