{"product_id":"mercury-obdm-light-8m0046481","title":"Mercury – Dash-Mounted Catalyst Malfunction Light | Engine Alert Indicator | 8M0046481","description":"\u003cp data-start=\"0\" data-end=\"90\"\u003e\u003cstrong data-start=\"0\" data-end=\"90\"\u003eMercury – Dash-Mounted Catalyst Malfunction Light | Engine Alert Indicator | 8M0046481\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr data-start=\"92\" data-end=\"95\"\u003e\n\u003cp data-start=\"97\" data-end=\"109\"\u003e\u003cstrong data-start=\"97\" data-end=\"109\"\u003eOverview\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"111\" data-end=\"560\"\u003eCatalyst-equipped MerCruiser engines rely on a clear visual alert when the emissions system needs attention. The Mercury 8M0046481 Dash-Mounted Catalyst Malfunction Light gives you that reminder. When the catalyst system detects a fault, this light turns on—much like the check-engine light in a car or truck—letting you know it’s time to get the engine inspected. It’s simple, easy to see, and built for dashboards where a quick visual cue matters.\u003c\/p\u003e\n\u003chr data-start=\"562\" data-end=\"565\"\u003e\n\u003cp data-start=\"567\" data-end=\"583\"\u003e\u003cstrong data-start=\"567\" data-end=\"583\"\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"587\" data-end=\"679\"\u003e\n\u003cstrong data-start=\"587\" data-end=\"617\"\u003eCatalyst Alert Indicator –\u003c\/strong\u003e Illuminates when the catalyst system detects a malfunction.\u003c\/li\u003e\n\u003cli data-start=\"682\" data-end=\"784\"\u003e\n\u003cstrong data-start=\"682\" data-end=\"712\"\u003eAutomotive-Style Warning –\u003c\/strong\u003e Behaves like a check-engine light, reminding you to schedule service.\u003c\/li\u003e\n\u003cli data-start=\"787\" data-end=\"863\"\u003e\n\u003cstrong data-start=\"787\" data-end=\"810\"\u003eDash-Mount Design –\u003c\/strong\u003e Installs cleanly on the helm for clear visibility.\u003c\/li\u003e\n\u003cli data-start=\"866\" data-end=\"1018\"\u003e\n\u003cstrong data-start=\"866\" data-end=\"895\"\u003eHarness Sold Separately –\u003c\/strong\u003e Works with specific single-helm harnesses.\u003c\/li\u003e\n\u003cli data-start=\"1021\" data-end=\"1111\"\u003e\n\u003cstrong data-start=\"1021\" data-end=\"1044\"\u003eOEM Compatibility –\u003c\/strong\u003e Intended for MerCruiser engines equipped with a catalyst system.\u003c\/li\u003e\n\u003cli data-start=\"1114\" data-end=\"1208\"\u003e\n\u003cstrong data-start=\"1114\" data-end=\"1138\"\u003eReliable Operation –\u003c\/strong\u003e Provides a simple, direct status indication without extra displays.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1210\" data-end=\"1213\"\u003e\n\u003cp data-start=\"1215\" data-end=\"1232\"\u003e\u003cstrong data-start=\"1215\" data-end=\"1232\"\u003eCompatibility\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"1236\" data-end=\"1287\"\u003eMerCruiser engines equipped with catalyst systems\u003c\/li\u003e\n\u003cli data-start=\"1290\" data-end=\"1320\"\u003eSingle-helm harness options:\u003c\/li\u003e\n\u003cli data-start=\"1325\" data-end=\"1340\"\u003e\u003cstrong data-start=\"1325\" data-end=\"1338\"\u003e8M0048049\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-start=\"1345\" data-end=\"1360\"\u003e\u003cstrong data-start=\"1345\" data-end=\"1358\"\u003e8M0048054\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-start=\"1365\" data-end=\"1380\"\u003e\u003cstrong data-start=\"1365\" data-end=\"1378\"\u003e8M0048055\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-start=\"1385\" data-end=\"1400\"\u003e\u003cstrong data-start=\"1385\" data-end=\"1398\"\u003e8M0048056\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-start=\"1405\" data-end=\"1420\"\u003e\u003cstrong data-start=\"1405\" data-end=\"1418\"\u003e8M0048057\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-start=\"1425\" data-end=\"1440\"\u003e\u003cstrong data-start=\"1425\" data-end=\"1438\"\u003e8M0048058\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-start=\"1445\" data-end=\"1460\"\u003e\u003cstrong data-start=\"1445\" data-end=\"1458\"\u003e8M0048059\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1462\" data-end=\"1465\"\u003e\n\u003cp data-start=\"1467\" data-end=\"1503\"\u003e\u003cstrong data-start=\"1467\" data-end=\"1503\"\u003ePerformance \u0026amp; Practical Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1505\" data-end=\"1955\"\u003eThis indicator light gives you a clear, on-dash reminder that the catalyst system needs attention. It’s easy to spot even in bright daylight and offers a simple way to stay ahead of emissions-related issues before they turn into bigger problems. Once installed with the correct harness, the light activates automatically whenever the system detects a fault, giving you a straightforward alert without requiring a VesselView or multi-function display.\u003c\/p\u003e\n\u003chr data-start=\"1957\" data-end=\"1960\"\u003e\n\u003cp data-start=\"1962\" data-end=\"1977\"\u003e\u003cstrong data-start=\"1962\" data-end=\"1977\"\u003eWhy Buy OEM\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1979\" data-end=\"2411\"\u003eCatalyst alerts are tied directly to your engine’s emissions and diagnostic systems—areas where accuracy matters. Mercury’s OEM indicator is built to match the electrical logic and durability standards the catalyst system expects. Cheaper aftermarket lights often fail early or don’t illuminate correctly, which can hide issues you should catch early. The OEM light gives you confidence that you’ll see the warning when you need it.\u003c\/p\u003e\n\u003chr data-start=\"2413\" data-end=\"2416\"\u003e\n\u003cp data-start=\"2418\" data-end=\"2425\"\u003e\u003cstrong data-start=\"2418\" data-end=\"2425\"\u003eFAQ\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"2427\" data-end=\"2569\"\u003e\u003cstrong data-start=\"2427\" data-end=\"2478\"\u003eQ1: What does the catalyst light actually mean?\u003c\/strong\u003e\u003cbr data-start=\"2478\" data-end=\"2481\"\u003eIt indicates the engine’s catalyst system detected a fault and should be inspected soon.\u003c\/p\u003e\n\u003cp data-start=\"2571\" data-end=\"2692\"\u003e\u003cstrong data-start=\"2571\" data-end=\"2622\"\u003eQ2: Does this light affect how the engine runs?\u003c\/strong\u003e\u003cbr data-start=\"2622\" data-end=\"2625\"\u003eNo. It only shows a visual alert—it doesn’t change engine behavior.\u003c\/p\u003e\n\u003cp data-start=\"2694\" data-end=\"2810\"\u003e\u003cstrong data-start=\"2694\" data-end=\"2730\"\u003eQ3: Do I need a special harness?\u003c\/strong\u003e\u003cbr data-start=\"2730\" data-end=\"2733\"\u003eYes. One of the specified single-helm harnesses is required for installation.\u003c\/p\u003e\n\u003cp data-start=\"2812\" data-end=\"2920\"\u003e\u003cstrong data-start=\"2812\" data-end=\"2863\"\u003eQ4: Is this only for catalyst-equipped engines?\u003c\/strong\u003e\u003cbr data-start=\"2863\" data-end=\"2866\"\u003eYes. Non-catalyst engines will not use this indicator.\u003c\/p\u003e\n\u003cp data-start=\"2922\" data-end=\"3059\"\u003e\u003cstrong data-start=\"2922\" data-end=\"2973\"\u003eQ5: Can this replace a digital display warning?\u003c\/strong\u003e\u003cbr data-start=\"2973\" data-end=\"2976\"\u003eYes. It provides a physical dash-mounted alert without needing a VesselView screen.\u003c\/p\u003e","brand":"Mercury","offers":[{"title":"Default Title","offer_id":46935457038627,"sku":"8M0046481","price":30.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/PV699875.jpg?v=1698793578","url":"https:\/\/partsvu.com\/en-ca\/products\/mercury-obdm-light-8m0046481","provider":"PartsVu","version":"1.0","type":"link"}