{"product_id":"mercury-gauge-wtr-120-140-79-8m6020010","title":"Mercury – Water Temperature Gauge C–H (120–240°F) | Cooling System Monitoring | Black Face | Chrome Bezel | 79-8M6020010","description":"\u003cp data-start=\"0\" data-end=\"124\"\u003e\u003cstrong data-start=\"0\" data-end=\"124\"\u003eMercury – Water Temperature Gauge C–H (120–240°F) | Cooling System Monitoring | Black Face | Chrome Bezel | 79-8M6020010\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr data-start=\"126\" data-end=\"129\"\u003e\n\u003cp data-start=\"131\" data-end=\"560\"\u003e\u003cstrong data-start=\"131\" data-end=\"143\"\u003eOverview\u003c\/strong\u003e\u003cbr data-start=\"143\" data-end=\"146\"\u003eThis 120–240°F temperature gauge gives you a steady look at how warm the engine is running without the needle bouncing every time the boat shifts. The sweep is slow and controlled, so small changes are easy to spot with a quick glance. Out on the water, it becomes part of your usual rhythm—you check it, register the number, and keep moving. It’s a simple, everyday gauge that helps you stay ahead of heat issues.\u003c\/p\u003e\n\u003chr data-start=\"562\" data-end=\"565\"\u003e\n\u003cp data-start=\"567\" data-end=\"1097\"\u003e\u003cstrong data-start=\"567\" data-end=\"583\"\u003eKey Features\u003c\/strong\u003e\u003cbr data-start=\"583\" data-end=\"586\"\u003e    • \u003cstrong data-start=\"612\" data-end=\"631\"\u003e120–240°F Scale\u003c\/strong\u003e – Covers the heat range most marine engines run in.\u003cbr data-start=\"683\" data-end=\"686\"\u003e    • \u003cstrong data-start=\"712\" data-end=\"738\"\u003eSmooth Needle Movement\u003c\/strong\u003e – Holds steady through chop, trim changes, and throttle swings.\u003cbr data-start=\"802\" data-end=\"805\"\u003e    • \u003cstrong data-start=\"831\" data-end=\"852\"\u003eStandard Dash Fit\u003c\/strong\u003e – Drops cleanly into common dash openings.\u003cbr data-start=\"895\" data-end=\"898\"\u003e    • \u003cstrong data-start=\"924\" data-end=\"943\"\u003eBacklit Display\u003c\/strong\u003e – Stays readable in low or fading light.\u003cbr data-start=\"984\" data-end=\"987\"\u003e    • \u003cstrong data-start=\"1013\" data-end=\"1037\"\u003eMarine-Durable Build\u003c\/strong\u003e – Handles spray, vibration, and regular day-to-day running.\u003c\/p\u003e\n\u003chr data-start=\"1099\" data-end=\"1102\"\u003e\n\u003cp data-start=\"1104\" data-end=\"1316\"\u003e\u003cstrong data-start=\"1104\" data-end=\"1135\"\u003eEngine \u0026amp; Boat Compatibility\u003c\/strong\u003e\u003cbr data-start=\"1135\" data-end=\"1138\"\u003e    • FourStroke outboards\u003cbr data-start=\"1184\" data-end=\"1187\"\u003e    • Verado series\u003cbr data-start=\"1226\" data-end=\"1229\"\u003e    • Pro XS engines\u003cbr data-start=\"1269\" data-end=\"1272\"\u003e    • SmartCraft systems\u003c\/p\u003e\n\u003chr data-start=\"1318\" data-end=\"1321\"\u003e\n\u003cp data-start=\"1323\" data-end=\"1696\"\u003e\u003cstrong data-start=\"1323\" data-end=\"1359\"\u003ePerformance \u0026amp; Practical Benefits\u003c\/strong\u003e\u003cbr data-start=\"1359\" data-end=\"1362\"\u003eOn the water, this gauge makes spotting rising temperature simple. Because the sweep stays calm, changes stand out clearly—especially when you’re running shallow, trimming high, or picking up weeds. It’s easy to read while cruising or easing through a channel. Over time, it becomes a quiet, reliable part of keeping the engine happy.\u003c\/p\u003e\n\u003chr data-start=\"1698\" data-end=\"1701\"\u003e\n\u003cp data-start=\"1703\" data-end=\"2004\"\u003e\u003cstrong data-start=\"1703\" data-end=\"1718\"\u003eWhy Buy OEM\u003c\/strong\u003e\u003cbr data-start=\"1718\" data-end=\"1721\"\u003eOEM gauges read Mercury’s sender signals correctly, so the number you see is accurate rather than drifting. They hold up well to vibration, heat, and weather that usually wear out cheaper gauges. Most boaters stay with OEM because temperature is one thing you don’t want to guess on.\u003c\/p\u003e\n\u003chr data-start=\"2006\" data-end=\"2009\"\u003e\n\u003cp data-start=\"2011\" data-end=\"2159\"\u003e\u003cstrong data-start=\"2011\" data-end=\"2018\"\u003eFAQ\u003c\/strong\u003e\u003cbr data-start=\"2018\" data-end=\"2021\"\u003e\u003cstrong data-start=\"2021\" data-end=\"2066\"\u003e1. How do I know if the gauge is failing?\u003c\/strong\u003e\u003cbr data-start=\"2066\" data-end=\"2069\"\u003eIf the needle sticks, jumps, or barely moves as the engine warms, it’s likely wearing out.\u003c\/p\u003e\n\u003cp data-start=\"2161\" data-end=\"2294\"\u003e\u003cstrong data-start=\"2161\" data-end=\"2201\"\u003e2. Does this gauge need calibration?\u003c\/strong\u003e\u003cbr data-start=\"2201\" data-end=\"2204\"\u003eMost setups read right away, but checking the sender during install is always a good move.\u003c\/p\u003e\n\u003cp data-start=\"2296\" data-end=\"2412\"\u003e\u003cstrong data-start=\"2296\" data-end=\"2332\"\u003e3. How does it handle saltwater?\u003c\/strong\u003e\u003cbr data-start=\"2332\" data-end=\"2335\"\u003eA quick rinse after your run helps it hold up through long saltwater seasons.\u003c\/p\u003e\n\u003cp data-start=\"2414\" data-end=\"2542\"\u003e\u003cstrong data-start=\"2414\" data-end=\"2460\"\u003e4. Anything important during installation?\u003c\/strong\u003e\u003cbr data-start=\"2460\" data-end=\"2463\"\u003eClean grounds and solid wiring help the needle move smoothly and stay accurate.\u003c\/p\u003e\n\u003cp data-start=\"2544\" data-end=\"2674\"\u003e\u003cstrong data-start=\"2544\" data-end=\"2591\"\u003e5. What does overheating usually look like?\u003c\/strong\u003e\u003cbr data-start=\"2591\" data-end=\"2594\"\u003eThe needle creeps toward the upper part of the scale and stays there under load.\u003c\/p\u003e","brand":"Mercury","offers":[{"title":"Default Title","offer_id":46936504369443,"sku":"79-8M6020010","price":46.42,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/PV1003061.jpg?v=1720533530","url":"https:\/\/partsvu.com\/en-ca\/products\/mercury-gauge-wtr-120-140-79-8m6020010","provider":"PartsVu","version":"1.0","type":"link"}