Name: MERCRUISER THERMOSTAT Kit | Replaces OEM 3856961 | 4Boats
Price: 14.62 GBP
Rating: 5 (1 reviews)

MERCRUISER THERMOSTAT Kit | Replaces OEM 3856961 | 4Boats

Dispatched in 2-3 days

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Low stock - 1 item left
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Our stock levels are dynamic and can change frequently. If a product appears to be in stock, it may have already sold out. Please contact us if you have any questions about availability. Thank you for your understanding.

£14.62

Tax included.

Spain stock. Delivery in 4-5 days. The RECMAR thermostat kit replaces OEM 3856961 and fits select MerCruiser sterndrive and inboard engines. It regulates coolant flow to maintain optimal operating temperature for reliable marine performance.

Replaces OEM part number: 3856961 (verify compatibility before ordering; OEM 3856961 is often cross‑referenced with Volvo Penta)
Fits select MerCruiser sterndrive and inboard engines - e.g., 4.3L, 5.0L, 5.7L families; confirm with engine model and serial number
Thermostat opening temperature: 160°F / 71°C
Includes thermostat, gaskets/seals (high‑temperature elastomer) and installation instructions
Corrosion‑resistant metal components and high‑temperature seals for marine use
OEM‑equivalent fit and reliable performance; easy installation for professionals and DIYers

Compatibility note: OEM 3856961 is sometimes associated with Volvo Penta; please verify your engine's OEM number or contact us for fitment assistance before ordering.

For related parts see MerCruiser parts and Cooling System.

Choose this thermostat kit to protect engine performance and ensure dependable temperature control on the water.

For the products under £150 the shipping is £6.99.

Free delivery for the most items over £150.

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MERCRUISER THERMOSTAT Kit | Replaces OEM 3856961 | 4Boats

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Why choose us

ITS ALL ABOUT THE QUALITY

TEAMWORK MAKES THE DREAMWORK

YOU MATTER TO US.