{"product_id":"kpalag-oil-pressure-fuel-pump-shutoff-switch-for-mercruiser-v8-engines-direct-fit-87-864252a01-corrosion-resistant","title":"KPALAG Oil Pressure Fuel Pump Shutoff Switch for Mercruiser V8 Engines — Direct-Fit 87-864252A01, Corrosion-Resistant","description":"\u003cp\u003e\u003cstrong\u003eKPALAG's oil pressure fuel-pump shutoff sensor is a direct-fit replacement switch that monitors engine oil pressure and stops fuel-pump operation when pressure falls outside safe range.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis replacement sensor is built to match Mercruiser\/Quicksilver engine requirements for 4.3L, 5.0L, 5.7L (305\/454), 7.4L, 8.2L and 502 V8 models and cross-references OEM numbers including 87-864252A01. Constructed from flame-retardant PA plastic and stainless steel components, the KPALAG switch aims to deliver stable electrical response and corrosion resistance in marine environments. It is engineered as a direct-replacement part to simplify service and reduce downtime on boats and other applications using these Mercruiser engines.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this sensor integrate with my Mercruiser engine?\u003c\/h3\u003e\n\u003cp\u003eThe KPALAG switch is designed to match the original equipment specifications so it connects to existing oil pressure circuits and fuel pump shutoff wiring without modification. Its electrical terminals and thread size are compatible with the same mounting and harness locations used on the factory sensor.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDirect-fit for listed Mercruiser V8 engines and mounting points\u003c\/li\u003e\n  \u003cli\u003eCompatible with OEM wiring harnesses and connectors\u003c\/li\u003e\n  \u003cli\u003eReplaces part numbers 87-864252A01, 87-805024, 87-8M0070108, 87-864252\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat performance and durability features does the KPALAG switch offer?\u003c\/h3\u003e\n\u003cp\u003eThe sensor uses flame-retardant PA plastic for the housing and stainless steel for wetted metal parts, improving resistance to heat and corrosion common in marine engine bays. That construction gives a reliable electrical response and extended service life compared with cheaper, untreated components.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFlame-retardant plastic housing for thermal safety\u003c\/li\u003e\n  \u003cli\u003eStainless-steel contact surfaces for corrosion resistance\u003c\/li\u003e\n  \u003cli\u003eEngineered for consistent electrical switching and accurate pressure response\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill installation require special tools or adjustments?\u003c\/h3\u003e\n\u003cp\u003eInstallation is straightforward because the KPALAG sensor is a direct replacement; no special calibration or programming is needed. Typical installation requires basic hand tools to remove the old switch, inspect the mounting area, and secure the new part with the correct torque to avoid leaks.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSimple remove-and-replace procedure—no special tools required\u003c\/li\u003e\n  \u003cli\u003eFollow OEM torque specs to avoid thread damage or leaks\u003c\/li\u003e\n  \u003cli\u003eInspect electrical connectors for corrosion before reconnecting\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does this switch help with oil-pressure indicator problems?\u003c\/h3\u003e\n\u003cp\u003eWhen oil pressure falls below the sensor's setpoint, the switch opens the fuel-pump circuit to reduce the risk of running the engine without proper lubrication. Replacing a failing or stuck switch often resolves a persistent oil-pressure warning light caused by sensor faults rather than the oil system itself.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDetects low oil pressure and interrupts fuel pump power as intended\u003c\/li\u003e\n  \u003cli\u003eUseful diagnostic step when warning light or pump behavior is abnormal\u003c\/li\u003e\n  \u003cli\u003eHelps prevent continued fuel delivery during low-oil-pressure events\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Boat owners, marine technicians, and DIY mechanics who operate or service Mercruiser\/Quicksilver V8 engines (4.3L–8.2L, including 305, 454, and 502 variants) and need a reliable, OEM-cross-referenced oil-pressure fuel-pump shutoff switch. If you require a straightforward replacement for part numbers such as 87-864252A01 and want corrosion-resistant materials and a plug-and-play installation, the KPALAG switch is built for that use.\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: Is this sensor a direct replacement for part number 87-864252A01?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. This KPALAG sensor cross-references 87-864252A01 and related OEM numbers for direct replacement.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do I need to calibrate the switch after installation?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No calibration is required; it installs plug-and-play following OEM torque and wiring practices.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"KPALAG","offers":[{"title":"Default Title","offer_id":48084512899230,"sku":"B0CF1BLPMR","price":31.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/kpalag-front-view-sensor.jpg?v=1785858265","url":"https:\/\/northtrailauto.ca\/products\/kpalag-oil-pressure-fuel-pump-shutoff-switch-for-mercruiser-v8-engines-direct-fit-87-864252a01-corrosion-resistant","provider":"North Trail Auto","version":"1.0","type":"link"}