Mercury MerCruiser Pressure Sensor 881879T11
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Mercury / MerCruiser Quicksilver Pressure Sensor ā 881879T11
The Mercury Quicksilver 881879T11 Pressure Sensor is a genuine OEM water or oil pressure sensor used on many Mercury outboards and MerCruiser gasoline engines. It measures system pressure and sends data to the engine control module or gauges to help monitor engine health and cooling system performance.
Key Specifications
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Part Number: 881879T11
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Component Type: Pressure sensor / pressure sender
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Pressure Range: 0ā100 PSI
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OEM Brand: Mercury Marine / Quicksilver
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Replaces: 881879A6 and other earlier versions
Compatible Engines / Applications
Commonly used on Mercury outboards and MerCruiser MPI engines, including:
Mercury / Mariner Outboards
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75ā300 HP FourStroke and 2-stroke models
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DFI, Jet, Pro XS, and Sport XS engines
MerCruiser Sterndrive & Inboard Engines
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305 CID (5.0L) V8
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350 CID (5.7L) V8
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377 CID V8
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496 CID V8
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502 CID V8 MPI engines
Function
The pressure sensor monitors engine cooling or oil pressure and sends readings to the engine management system or instrument gauges. The information helps detect issues such as:
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Low cooling water pressure
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Oil pressure loss
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Cooling system restrictions
Accurate pressure monitoring helps protect the engine from overheating or lubrication failure.
Symptoms of a Faulty Pressure Sensor
A failing pressure sensor may cause:
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Erratic or incorrect pressure gauge readings
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Warning alarms on SmartCraft or engine gauges
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Fault codes related to cooling or oil pressure
Replacing the sensor restores accurate monitoring and helps maintain proper engine protection.
ā ļø Fitment Tip:
Always confirm compatibility using the engine model and serial number. Mercury engines use several similar pressure sensors with different calibration ranges and connectors depending on the engine platform.
Shipping:
OEM parts ship same or next day for fast Canada wide shipping.
Technical Specifications:
- Type: Pressure sensor
- Compatible with: Mercury MerCruiser marine engines
- Part Number: 881879T11
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.