{"product_id":"sierra-mp40970-1-marine-emergency-cut-off-kill-switch-4-terminal-normally-open-closed-cross-oem-722325-white","title":"Sierra Emergency Cut-Off Switch MP40970-1, 4-Terminal Selectable Circuit, White, with Coiled Lanyard","description":"\u003cp\u003eThe Sierra MP40970-1 is an emergency cut-off switch (kill switch) built for boats that need a reliable engine-stop safeguard at the helm. If the operator is thrown from the seat or moves away from the control station, the attached lanyard pulls free of the switch and immediately interrupts the ignition circuit, shutting the engine down. This is a core piece of onboard safety equipment for anyone running an outboard or similarly equipped boat.\u003c\/p\u003e\u003cp\u003eThe switch is wired with 4 terminals, which lets it be configured for either a normally open or a normally closed circuit depending on how the boat's ignition system is set up. This flexibility means the same switch body can be installed across different wiring configurations rather than needing a dedicated part for each. It comes with its coiled lanyard attached and is finished in white to match common helm and dash hardware. Should the lanyard itself ever need replacing, Sierra's MP40990 lanyard is the correct replacement for this switch.\u003c\/p\u003e\u003cp\u003eSierra is a long-standing supplier of marine engine and ignition parts, and the MP40970-1 is sold as a direct part for boat owners and marine technicians replacing a worn or failed cut-off switch.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e MP40970-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Emergency Cut-Off Switch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminals:\u003c\/strong\u003e 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCircuit Type:\u003c\/strong\u003e Selectable, normally open or normally closed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacement Lanyard:\u003c\/strong\u003e MP40990\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e 722325\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.2 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Dimensions:\u003c\/strong\u003e 0.39 x 0.39 x 0.39 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282200756\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNational Stock Number:\u003c\/strong\u003e 5930-01-553-8353\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e United States\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eUniversal emergency cut-off switch application; no specific make, engine, or model fitment is specified for this part.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e722325\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra MP40970-1 emergency cut-off switch do?\u003c\/strong\u003e It interrupts the ignition circuit and shuts the engine down when the attached lanyard is pulled free, acting as a safety kill switch if the operator leaves the helm unexpectedly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the MP40970-1 come with a lanyard?\u003c\/strong\u003e Yes, the MP40970-1 emergency cut-off switch is supplied with a coiled lanyard attached.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan this switch be wired for either a normally open or normally closed circuit?\u003c\/strong\u003e Yes, the MP40970-1 has 4 terminals so it can be configured for a normally open or a normally closed circuit depending on the boat's ignition wiring.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat replacement lanyard fits the MP40970-1?\u003c\/strong\u003e The MP40990 lanyard is the correct replacement lanyard for the MP40970-1 emergency cut-off switch.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the MP40970-1 switch?\u003c\/strong\u003e The MP40970-1 emergency cut-off switch is white.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs 722325 the same part as the MP40970-1?\u003c\/strong\u003e 722325 is the OEM cross-reference number for the Sierra MP40970-1, so it identifies the same emergency cut-off switch.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the MP40970-1 weigh?\u003c\/strong\u003e The MP40970-1 emergency cut-off switch weighs 0.2 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the MP40970-1?\u003c\/strong\u003e The MP40970-1 measures 0.39 x 0.39 x 0.39 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the MP40970-1 a genuine Sierra part?\u003c\/strong\u003e Yes, the MP40970-1 is a genuine Sierra emergency cut-off switch, not a generic substitute.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere is the MP40970-1 made?\u003c\/strong\u003e The MP40970-1 emergency cut-off switch is manufactured in the United States.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the MP40970-1 fit any boat's kill switch circuit?\u003c\/strong\u003e The MP40970-1's 4-terminal design allows it to be wired into either a normally open or normally closed circuit, making it adaptable to different ignition wiring setups; no specific make or engine fitment is listed for it.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988457435355,"sku":"SIE-MP40970-1","price":25.37,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/MP40970-1__70941.1722502146.500.750.jpg?v=1785188045","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-mp40970-1-marine-emergency-cut-off-kill-switch-4-terminal-normally-open-closed-cross-oem-722325-white","provider":"Good Vibes Marina","version":"1.0","type":"link"}