{"product_id":"smp-vacuum-operated-switch-kit-275-01153","title":"SMP Vacuum Operated Switch Kit","description":"\u003cp\u003eStandard Motor Products vacuum-operated electrical switch (VOES) kit with self-assembly design that lets you select calibration levels for custom tuning. Engineered from high-tech thermoplastics and factory-calibrated, each unit is vacuum-tested for accuracy and reliability.\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eSelf-assembly kit with preset calibration levels\u003c\/li\u003e\n  \u003cli\u003e100% vacuum tested for accuracy\u003c\/li\u003e\n  \u003cli\u003eIncludes bracket, crimp terminals, and installation instructions\u003c\/li\u003e\n  \u003cli\u003eHigh-tech engineered thermoplastic construction\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Standard Motor Products (SMP)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part #:\u003c\/strong\u003e MCVOS4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 091769544560\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e 4.9 in\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 3.35 in\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 2.7 in\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.21 lbs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWhat is a vacuum-operated switch used for?\u003c\/h3\u003e\n\u003cp\u003eVOES controls emission systems and fuel delivery based on engine vacuum, allowing tuners to dial in idle and cruise characteristics on carbureted or early fuel-injected engines.\u003c\/p\u003e\n\u003ch3\u003eWhat calibration levels are available in this kit?\u003c\/h3\u003e\n\u003cp\u003eThis is a self-assembly kit with preset calibration options — select the level that matches your specific engine tuning needs. Consult the included instructions for calibration specifications.\u003c\/p\u003e\n\u003ch3\u003eWhat's included in the kit?\u003c\/h3\u003e\n\u003cp\u003eThe vacuum switch, mounting bracket, crimp terminals, and detailed installation instructions for assembly and wiring.\u003c\/p\u003e\n\u003ch3\u003eIs this vacuum tested?\u003c\/h3\u003e\n\u003cp\u003eYes — each unit is 100% factory vacuum-tested to verify calibration accuracy before shipment.\u003c\/p\u003e","brand":"SMP","offers":[{"title":"Default Title","offer_id":53035037130863,"sku":"275-01153","price":62.82,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/6734\/6543\/files\/output_f370c3f4-8862-4fc1-803c-67560798ea52.png?v=1779560190","url":"https:\/\/vtwinbikers.com\/products\/smp-vacuum-operated-switch-kit-275-01153","provider":"Vtwinbikers","version":"1.0","type":"link"}