{"product_id":"mercury-sensor-water-pressure-50psi-8m0157742","title":"Mercury – Water Pressure Sensor Kit | Engine Monitoring Series | Composite \u0026 Brass Assembly | 8M0157742","description":"\u003ch2\u003e\u003cspan data-preserver-spaces=\"true\"\u003eMercury – Water Pressure Sensor Kit | Engine Monitoring Series | Composite \u0026amp; Brass Assembly | 8M0157742\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3\u003e\u003cspan data-preserver-spaces=\"true\"\u003eOverview\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003eWhen you spend a lot of time on the water, you start to notice the little things — the way your engine sounds when it’s running right, the way the hull feels when it’s trimmed just so, the sense of calm that comes when everything is working the way it should. A water pressure sensor is one of those small, behind-the-scenes parts that keeps that confidence alive. Mercury Marine part 8M0157742 gives you the reassurance that your engine’s cooling system is doing its job. Whether \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eyou’re cruising upriver, running a long stretch across the bay, or easing through a tight marina, having accurate pressure readings feels like having a steady hand on your shoulder.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan data-preserver-spaces=\"true\"\u003eKey Features\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eMonitors engine water pressure for cooling system health\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eDesigned for 0–50 PSI applications\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eComposite body with brass fittings for reliable, corrosion-resistant performance\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan data-preserver-spaces=\"true\"\u003eEngineer\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eed for accurate, real-time readings to prevent overheating\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eComplete kit includes sensor and installation components\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan data-preserver-spaces=\"true\"\u003eEngine \u0026amp; Boat Compatibility\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eFits select MerCruiser V6 and V8 MPI sterndrive and inboard engines\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eCompatible with 305, 350, 377, 496, and 502 cubic-inch platforms\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eDesigned for Mercury two-stroke 110–200 horsepower 2.5L Jet, Pro XS, DFI, and SST outboards\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eIdeal for bass boats, sport boats, cruisers, sterndrive-powered runabouts, and jet applications\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eSuitable for freshwater and saltwater vessels that rely on consistent cooling performance\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan data-preserver-spaces=\"true\"\u003ePerformance \u0026amp; Practical Benefits\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003eA water pressure sensor might seem like a simple component, but its role is anything but small. This kit keeps you connected to the engine’s cooling system in a way you can feel and trust. With accurate pressure feedback, you’ll know immediately if something changes — weeds in the intake, reduced flow, early signs of overheating — long before it becomes a breakdown.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003eOnce installed, the difference is subtle but meaningful. Your engine feels steadier because you’re not guessing anymore. You’ll hear it in the smoother tone at high speed, and you’ll feel it when conditions shift suddenly, like when you move from deep water into a shallower stretch. The sensor provides clean, real-time data that helps you protect your engine without interrupting the ride.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003eThe\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e materials are built for the marine world: corrosion-resistant fittings, a sturdy composite body, and internal components that hold up to constant vibration. Installation is surprisingly straightforward. With common shop tools, most boat owners can mount the sensor cleanly and integrate it into their existing monitoring system. Onc\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003ee it’s in, it works quietly in the background, giving you the kind of confidence you only get when you truly know what your engine is doing.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan data-preserver-spaces=\"true\"\u003eWhy Buy OEM\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003eEngine monitoring isn’t the place to cut corners. A genuine Mercury Marine part is designed around the exact pressure ranges, electrical characteristics, and cooling system specs of the engines it protects. Aftermarket sensors may claim compatibility, but small differences in calibration or construction can mean inaccurate readings — and inaccurate readings can lead to real trouble.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003eBuying OEM means you’re choosing a part that fits right the first time and delivers readings you can trust. It’s long-term protection, better reliability, and fewer expensive surprises down the road. It’s the kind of advice seasoned boaters give each other at the dock: when the engine’s safety is on the line, stick with the parts Mercury designed for it.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan data-preserver-spaces=\"true\"\u003eFAQ\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ1: Which engines does the 8M0157742 Water Pressure Sensor Kit fit?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e It fits select MerCruiser V6 and V8 MPI sterndrive and inboard engines, along with Mercury 110–200 horsepower two-stroke outboards.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ2: What makes this Mercury Marine part better than aftermarket sensors?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e It’s calibrated for precise readings, built with corrosion-resistant materials, and engineered specifically for Mercury cooling systems.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ3: How do I confirm it’s the right replacement?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e Check your owner’s manual or match your engine model (305, 350, 377, 496, 502 CID) or Mercury two-stroke series.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ4: Can it be used in both saltwater and freshwater?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e Yes — the corrosion-resistant design handles both environments well.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ5: Is installation straightforward?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e It is. Most boaters can install it with common tools, or it can be completed quickly by a technician.\u003c\/span\u003e\u003c\/p\u003e","brand":"Mercury","offers":[{"title":"Default Title","offer_id":46936617812259,"sku":"71-8M0157742","price":179.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/8M0157742_Main.jpg?v=1760631444","url":"https:\/\/partsvu.com\/en-au\/products\/mercury-sensor-water-pressure-50psi-8m0157742","provider":"PartsVu","version":"1.0","type":"link"}