{"product_id":"holley-efi-100-psi-stainless-pressure-sensor-0-5-4-5v-linear-output-pigtail-included","title":"Holley EFI 100 PSI Stainless Pressure Sensor - 0.5-4.5V Linear Output, Pigtail Included","description":"\u003cp\u003e\u003cstrong\u003eHolley EFI 554-102 is a 100 PSI stainless-steel pressure sensor designed to deliver a linear 0.5V–4.5V output for reliable fuel or oil pressure readings with Holley EFI systems.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eBuilt to match Holley's long legacy in performance fuel systems, this compact sensor provides a weather- and vibration-resistant stainless housing, an included pigtail connector for wiring flexibility, and plug-and-play compatibility with Holley EFI controllers. It converts hydraulic pressure up to 100 PSI into a predictable voltage signal that modern engine management systems use to monitor or log pressure data.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this sensor connect to my Holley EFI system?\u003c\/h3\u003e\n\n\u003cp\u003eConnection is straightforward: the sensor uses a standard electrical pigtail and outputs a linear voltage signal that Holley ECUs recognize for pressure input. No special calibration is normally required beyond selecting the correct input type in the ECU software.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eIncluded pigtail connector for quick wiring and custom harnesses\u003c\/li\u003e\n  \u003cli\u003e0.5V–4.5V linear output matches Holley EFI input expectations\u003c\/li\u003e\n  \u003cli\u003eStandard pressure port threads fit common installations\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat materials and durability features does it offer?\u003c\/h3\u003e\n\n\u003cp\u003eThe sensing body is made of stainless steel to resist corrosion from fuel and environmental exposure, and the internal sensing element is engineered for stable performance under vibration and temperature cycles. That construction helps maintain consistent readings over time in harsh engine bays.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eStainless steel housing for corrosion resistance\u003c\/li\u003e\n  \u003cli\u003eSealed electrical connector to limit moisture intrusion\u003c\/li\u003e\n  \u003cli\u003eEngineered for automotive vibration and thermal conditions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich pressures and outputs should I expect for tuning or logging?\u003c\/h3\u003e\n\n\u003cp\u003eThe sensor measures up to 100 PSI and provides a linear voltage sweep from roughly 0.5 volts at the low end to 4.5 volts at full scale. This proportional output makes it simple to map pressure values in an ECU or datalogging tool without complex scaling.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eRange: 0–100 PSI suitable for many fuel and oil systems\u003c\/li\u003e\n  \u003cli\u003eLinear voltage: ~0.5V at low pressure to ~4.5V at 100 PSI\u003c\/li\u003e\n  \u003cli\u003eDirect compatibility with Holley EFI pressure input parameters\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat installation tips should I know before fitting the sensor?\u003c\/h3\u003e\n\n\u003cp\u003eInstall the sensor where it can see true system pressure and avoid extreme heat sources when possible; use proper thread sealant that won’t contaminate the sensor port. Route the pigtail away from high-voltage ignition components and secure the wiring to prevent chafing.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eUse compatible thread sealant; avoid sealants that can clog the sensing orifice\u003c\/li\u003e\n  \u003cli\u003eMount away from direct exhaust heat where possible\u003c\/li\u003e\n  \u003cli\u003eTie off the pigtail to prevent vibration-related wear or disconnection\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: The Holley EFI 554-102 is aimed at engine builders, tuners, and performance vehicle owners who need a dependable, straightforward pressure input for Holley EFI controllers, dataloggers, or aftermarket gauges. It suits street and race installations where a durable stainless sensor with a simple linear voltage output is required for fuel or oil pressure monitoring and logging.\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 the Holley 554-102 compatible with non-Holley ECUs?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, any ECU that accepts a 0.5–4.5V linear pressure input can use this sensor, though you may need to configure scaling in the ECU.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use this sensor for both fuel and oil pressure?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The sensor is suitable for fuel or oil pressure inputs up to 100 PSI when installed and sealed correctly.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Holley EFI","offers":[{"title":"Default Title","offer_id":55171004793175,"sku":"B004IDQ2O8","price":186.84,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/holley-efi-554-102-front-view.jpg?v=1790436582","url":"https:\/\/britishgarage.co.uk\/products\/holley-efi-100-psi-stainless-pressure-sensor-0-5-4-5v-linear-output-pigtail-included","provider":"British Garage","version":"1.0","type":"link"}