{"product_id":"sierra-marine-ignition-switch-mp41000-3-position-magneto-white-corrosion-resistant-7-8","title":"Sierra Marine Ignition Switch MP41000 — 3-Position Magneto, White, Corrosion-Resistant 7\/8\"","description":"\u003cp\u003e\u003cstrong\u003eThe Sierra MP41000 is a white, three-position magneto ignition switch with push-to-choke function designed to replace OEM marine ignition switches and resist corrosion in harsh environments.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eSierra engineered this MP41000 ignition switch to meet the demands of high-horsepower marine engines and to withstand saltwater and weather exposure. Built to match or exceed the original equipment it replaces, this switch combines a non-conductive housing, an inner seal, and maximum corrosion protection so ignition reliability is preserved aboard boats and other marine craft. Its compact 7\/8\" hole size and simple three-position operation make it straightforward to install into many dashboards.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the Sierra MP41000 maintain reliable starts in corrosive marine environments?\u003c\/h3\u003e\n\n\u003cp\u003eThe design prioritizes corrosion resistance and electrical integrity to reduce failures from oxidation and moisture intrusion. Materials and seals are selected to keep contacts clean and to stop current leaks that lead to shorts.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eMaximum corrosion protection coating to prevent oxidation on contacts\u003c\/li\u003e\n  \u003cli\u003eInner seal between cylinder lock and contact plate to block water entry\u003c\/li\u003e\n  \u003cli\u003eNon-conductive housing that reduces risk of electrical shorts\u003c\/li\u003e\n  \u003cli\u003ePush-to-choke function integrated for easier cold starts\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the controls and user features of this three-position magneto switch?\u003c\/h3\u003e\n\n\u003cp\u003eThe MP41000 offers three distinct positions—off, run, and magneto—plus a push-to-choke action to assist with starting. The layout is intuitive for boaters familiar with standard ignition switch operation.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eThree-position magneto switch for standard engine control\u003c\/li\u003e\n  \u003cli\u003ePush-to-choke to enrich mixture for cold starts without extra levers\u003c\/li\u003e\n  \u003cli\u003eCompact face and white finish to blend with dashboard styles\u003c\/li\u003e\n  \u003cli\u003eDesigned to replace OEM switches with equivalent electrical functions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat installation details and fitment should I expect?\u003c\/h3\u003e\n\n\u003cp\u003eInstallation is straightforward for anyone replacing an OEM-style ignition switch with a 7\/8\" mounting hole. Wiring follows conventional ignition connections; consult wiring diagrams or a technician if you’re unsure about terminals.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eMounting hole size: 7\/8\" — matches common OEM cutouts\u003c\/li\u003e\n  \u003cli\u003eStandard terminal arrangement compatible with many marine harnesses\u003c\/li\u003e\n  \u003cli\u003eNon-conductive housing simplifies grounding considerations\u003c\/li\u003e\n  \u003cli\u003eCompact profile fits crowded control panels\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat durability features help the MP41000 last under heavy use?\u003c\/h3\u003e\n\n\u003cp\u003eSierra designs its parts for high-horsepower engines and the repeated stresses of marine use, so this switch uses protective coatings and seals to extend service life. The result is a part that performs reliably across seasons and after frequent cycles.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eSealed interface to resist saltwater and humidity intrusion\u003c\/li\u003e\n  \u003cli\u003eContact protection to reduce wear from arcing and oxidation\u003c\/li\u003e\n  \u003cli\u003eRobust materials selected for marine operational demands\u003c\/li\u003e\n  \u003cli\u003eMeets or exceeds the original equipment it replaces\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The Sierra MP41000 is aimed at boat owners, marine technicians, and OEM builders needing a dependable replacement ignition switch for outboard and inboard engines. It fits installations requiring a 7\/8\" mounting hole and a three-position magneto control, and is especially useful where corrosion resistance and predictable starting behavior are priorities.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What size mounting hole does the Sierra MP41000 require?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The switch fits a 7\/8\" mounting hole, matching common OEM dashboard cutouts.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does the MP41000 include corrosion protection?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — it features maximum corrosion protection and an inner seal to resist oxidation and moisture.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":67590549438649,"sku":"B00144D77E","price":76.07,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/3765\/3177\/files\/sierra-mp41000-front-view.jpg?v=1790535027","url":"https:\/\/redleafauto.ca\/products\/sierra-marine-ignition-switch-mp41000-3-position-magneto-white-corrosion-resistant-7-8","provider":"Redleaf Auto","version":"1.0","type":"link"}