Mercury MerCruiser Seal 888593
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Mercury MerCruiser / Quicksilver Seal – 888593
Maintain a leak-free engine service point with the genuine Mercury Marine / Quicksilver 888593 Seal. This OEM oil drain plug seal (washer) is installed on the engine’s drain plug or oil drain tube, creating a tight seal that prevents oil leaks during operation and after oil changes.
Manufactured to Mercury Marine’s original equipment specifications, the seal ensures proper fit and reliable sealing performance for many Mercury and MerCruiser engines.
Key Features
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Genuine Mercury / Quicksilver OEM drain plug seal
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Provides a tight seal on the engine oil drain plug or drain tube
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Helps prevent oil leaks after service or during operation
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Durable washer-style seal designed for marine engine environments
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Direct replacement for the original factory seal
Superseded / Replacement Part
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888593 → superseded by 26-8M0188614 (current replacement part number).
Compatible Mercury Engines
Commonly used on Mercury Verado outboard engines, including:
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135 HP Verado
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150 HP Verado
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175 HP Verado
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200–300 HP Verado (L4 and L6 models)
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350 / 400 Verado models
Exact compatibility depends on engine model and serial number range.
Function
The seal sits between the oil drain plug and engine housing, compressing when the plug is tightened to create a leak-proof seal. Replacing the seal during oil service helps prevent oil seepage and maintains proper engine lubrication.
Important Compatibility Note
Drain plug seals may vary by engine model and drain plug design. Always verify compatibility using the engine serial number before ordering to ensure the correct replacement part.
Shipping: Ships same or next day for fast Canada wide shipping.
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.