Mercury MerCruiser Quicksilver Cap & Rotor Kit 811635K2
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Mercury / MerCruiser Quicksilver Cap & Rotor Kit ā 811635K2
The Mercury Quicksilver 811635K2 is a genuine OEM distributor cap and rotor service kit designed for MerCruiser 3.0L four-cylinder engines with Delco EST ignition systems. This kit replaces two key ignition components that distribute high-voltage spark from the ignition coil to the spark plugs.
Key Details
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Part Number: 811635K2
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Component Type: Distributor cap and rotor kit
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Ignition System: Delco EST
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OEM Brand: Mercury Marine / Quicksilver
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Includes: Distributor cap and rotor assembly
Compatible Engines
Typically used on:
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MerCruiser 3.0L 4-cylinder sterndrive engines
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GM-based 3.0L marinized engines using Delco EST ignition
These engines are commonly found in:
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Bowriders
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Small cruisers
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Fishing boats with Alpha drives
Features
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Marine-grade PBT/PET cap housing for strength and heat resistance
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Solid brass terminals that resist corrosion and electrical pitting
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Designed to maintain clean spark distribution and proper ignition timing
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Direct OEM replacement with exact factory fit
Purpose
The distributor cap and rotor:
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Route ignition voltage to the correct spark plug
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Maintain proper firing order and timing
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Ensure smooth engine starting and idle
When worn, symptoms can include:
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Hard starting
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Misfires
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Rough idle
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Loss of power
ā ļø Fitment Tip:
Always confirm compatibility using the engine serial number. MerCruiser ignition components vary between Delco EST, Thunderbolt IV, and later ignition systems, and the cap/rotor style must match the distributor type.
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 3ā4 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 ā 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 ā 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.