{"product_id":"marine-oil-pressure-switch-15-psi-trip-1-8-27-thread-10-32-stud-terminal-sierra-op22891","title":"Sierra Oil Pressure Switch OP22891, 15 PSI Normal Closed, 1\/8 Inch - 27 Thread","description":"\u003cp\u003eThe Sierra OP22891 is an optional oil pressure switch rated at 15 PSI with a normal closed contact design, built for marine engine oil pressure monitoring applications. It uses a 1\/8 inch - 27 thread for installation into the engine oil galley or block port. As a normal closed switch, it maintains a closed circuit under normal operating oil pressure and opens (or changes state) when the set pressure point is reached, which is used to trigger a warning light, buzzer, or gauge circuit in the boat's engine monitoring system.\u003c\/p\u003e\u003cp\u003eThis switch is designed as an alternative pressure setting option alongside other Sierra oil pressure switches, giving boat builders and engine rebuilders a choice of trip point to match the monitoring requirements of a given engine setup. It is a compact, direct-replacement style component intended for straightforward installation into an existing threaded oil pressure port.\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 OP22891\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Name:\u003c\/strong\u003e Oil Pressure Switch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure Rating:\u003c\/strong\u003e 15 PSI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSwitch Type:\u003c\/strong\u003e Normal closed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size:\u003c\/strong\u003e 1\/8 inch - 27\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.31 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Engine Parts\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat pressure does the Sierra OP22891 oil pressure switch trigger at?\u003c\/strong\u003e The Sierra OP22891 is rated for 15 PSI, meaning it responds at that oil pressure point.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the OP22891 a normal open or normal closed switch?\u003c\/strong\u003e It is a normal closed switch, so the circuit stays closed under normal oil pressure conditions.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat thread size does this oil pressure switch use?\u003c\/strong\u003e The OP22891 uses a 1\/8 inch - 27 thread for installation into the engine's oil pressure port.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra OP22891 weigh?\u003c\/strong\u003e This oil pressure switch weighs 0.31 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the OP22891 used for?\u003c\/strong\u003e It functions as an oil pressure switch that monitors engine oil pressure and can trigger a warning light, buzzer, or gauge circuit when the 15 PSI set point is reached.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the OP22891 described as an optional switch?\u003c\/strong\u003e Yes, the Sierra OP22891 is designated as an optional oil pressure switch, offering a 15 PSI setting as an alternative to other available pressure ratings.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat category of part is the OP22891?\u003c\/strong\u003e The OP22891 is categorized as an engine part, specifically an oil pressure switch.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the OP22891 come with mounting hardware or wiring?\u003c\/strong\u003e The available specifications for the OP22891 cover the switch itself, its 15 PSI rating, normal closed operation, and 1\/8 inch - 27 thread; no additional included hardware is specified.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan the OP22891 be used with a warning buzzer or light?\u003c\/strong\u003e As a normal closed oil pressure switch, the OP22891 is designed to work in circuits such as warning lights or buzzers that respond to a change in oil pressure state.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988457894107,"sku":"SIE-OP22891","price":21.32,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/sie-op22891_large__57144.1678198487.500.750.jpg?v=1785329174","url":"https:\/\/www.goodvibesmarina.com\/products\/marine-oil-pressure-switch-15-psi-trip-1-8-27-thread-10-32-stud-terminal-sierra-op22891","provider":"Good Vibes Marina","version":"1.0","type":"link"}