Mercury MerCruiser Gasket 8M0108647
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The Mercury Quicksilver 8M0108647 Gasket (Mercury format 27-8M0108647) is a genuine OEM fuel pump mounting gasket and spacer used on select MerCruiser gasoline engines. It seals the mechanical fuel pump to the engine block while maintaining the proper clearance for the pump mechanism.
Key Specifications
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Part Number: 8M0108647
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Mercury Format: 27-8M0108647
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Component Type: Fuel pump mounting gasket / spacer
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Construction: Metal spacer with gasket material on both sides
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Thickness: approx. 1/8 in (≈4 mm)
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OEM Brand: Mercury Marine / Quicksilver
Compatible Engines / Applications
Commonly used on MerCruiser 4-cylinder gasoline engines, including:
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2.5L (120 HP)
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3.0L (140 HP)
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3.0L TKS / 3.0L LX
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3.7L MerCruiser engines
Typical production range: 1983–1997, depending on engine configuration.
Function
This gasket assembly mounts between the engine block and mechanical fuel pump. It provides both sealing and spacing to ensure proper fuel pump operation.
It helps ensure:
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Leak-free fuel pump installation
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Proper pump arm clearance and operation
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Reliable fuel delivery to the carburetor
The metal spacer construction prevents distortion and maintains consistent gasket compression during engine operation.
Service Notes
A worn or damaged fuel pump gasket may cause:
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Fuel leaks at the pump mounting surface
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Reduced fuel pressure or delivery
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Air entering the fuel system
Replacing the gasket during fuel pump service helps maintain a proper seal and correct pump operation.
OEM parts ship same or next day for fast Canada wide shipping.
Technical Specifications:
- Type: Gasket
- Compatible with: Mercury MerCruiser marine engines
- Part Number: 8M0108647
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.