Mercury MerCruiser Quicksilver Fuel Pump Kit 866170A01
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Mercury MerCruiser / Quicksilver Fuel Pump Kit – 866170A01
Restore reliable fuel delivery with the genuine Mercury Marine / Quicksilver 866170A01 Fuel Pump Kit. This OEM kit includes a low-pressure electric lift fuel pump used in MerCruiser engines equipped with the Gen III Cool Fuel module, supplying fuel from the tank to the high-pressure EFI fuel system.
Manufactured to Mercury Marine’s original equipment specifications, the pump ensures proper fuel pressure and consistent engine performance for MerCruiser sterndrive and inboard gasoline engines.
Key Features
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Genuine Mercury / Quicksilver OEM fuel pump kit
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Low-pressure electric lift pump for EFI fuel systems
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Designed for engines with Gen III Cool Fuel fuel modules
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Maintains consistent fuel supply to the high-pressure pump
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Built for durability in marine fuel system environments
Part Details
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OEM Part Number: 866170A01
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Product Type: Low-pressure electric fuel pump assembly
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UPC: 745061659872
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Replacement / Cross Reference: Sierra 18-8865
Compatible Mercury MerCruiser Engines
Commonly used on MerCruiser GM-based V8 engines with Gen III Cool Fuel systems, including:
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5.0L (305 CID) V8 engines
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5.7L (350 CID) V8 engines
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377 CID engines
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496 CID engines
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502 CID engines
Exact compatibility depends on engine model and serial number range.
Function
The lift pump draws fuel from the tank and delivers it to the Cool Fuel module, where the high-pressure pump then supplies fuel to the EFI injectors. A properly functioning lift pump ensures stable fuel pressure and smooth engine operation.
Important Compatibility Note
Fuel pump assemblies vary by engine model, fuel module type, and serial number range. 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.