{"product_id":"fqranbo-adjustable-fuel-pressure-regulator-12-803-4-5-9-psi-3-8-npt-gauge-port-metal-abs-1-in-2-out","title":"FQRANBO Adjustable Fuel Pressure Regulator 12-803 4.5-9 PSI 3\/8\" NPT Gauge Port, Metal\/ABS 1-in-2-out","description":"\u003cp\u003e\u003cstrong\u003eThe FQRANBO 12-803 adjustable fuel pressure regulator is a compact, metal-and-ABS regulator with an integrated 1-in-2-out 3\/8\" NPT gauge port that lets you set and monitor fuel pressure from 4.5 to 9 PSI for Holley and Edelbrock carburetors.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis regulator is engineered to provide repeatable fuel pressure control between the fuel pump and carburetor on street and performance engines. It comes with a finer 1 PSI scale on the upgraded gauge, a knurled adjustment knob, and a 3\/8\" NPT configuration that fits standard carburetor plumbing. The body combines durable metal with ABS components to resist heat, vibration, and corrosion common in engine bays.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the FQRANBO 12-803 improve tuning and drivability?\u003c\/h3\u003e\n\u003cp\u003ePrecise pressure control matters for consistent carburetor metering and throttle response. The 4.5–9 PSI adjustment range covers most Holley and Edelbrock setups, helping you dial fuel delivery for idle quality, midrange power, and top-end performance without guessing.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFine 1 PSI gauge increments for accurate adjustments\u003c\/li\u003e\n  \u003cli\u003eKnurled regulation knob for quick on-car tuning\u003c\/li\u003e\n  \u003cli\u003eStable internal structure that minimizes pressure fluctuation\u003c\/li\u003e\n  \u003cli\u003eCompatibility with typical pump outputs for common carburetors\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat fittings and ports does this regulator use?\u003c\/h3\u003e\n\u003cp\u003eThe unit uses a 3\/8\" NPT gauge port with a 1-in-2-out layout that accepts standard braided lines or hard-line adapters. The physical layout simplifies plumbing and offers a dedicated gauge mounting point so you can monitor pressure directly where you need it.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e3\/8\" NPT gauge port (1 in, 2 out) for flexible plumbing\u003c\/li\u003e\n  \u003cli\u003eDirect-fit plumbing options for Holley and Edelbrock carburetors\u003c\/li\u003e\n  \u003cli\u003eClear access to gauge for real-time pressure checks\u003c\/li\u003e\n  \u003cli\u003eThreaded connections sized for common fittings and adapters\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow durable and serviceable is the regulator in an engine bay?\u003c\/h3\u003e\n\u003cp\u003eConstruction combines metal with engineered ABS to resist high temperatures, vibration, and gasoline exposure. Installation notes and an accessible hexagon socket nut make periodic checks and fine adjustments straightforward without specialized tools.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMetal body resists impact and heat in harsh environments\u003c\/li\u003e\n  \u003cli\u003eABS components reduce corrosion risk and weight\u003c\/li\u003e\n  \u003cli\u003eRemovable hex socket nut for safe adjustment and sealing\u003c\/li\u003e\n  \u003cli\u003eManufacturer support available for pressure or display anomalies\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I install and avoid common setup errors?\u003c\/h3\u003e\n\u003cp\u003eInstallation is simple but attention to the hexagon socket nut position is important to preserve adjustability and prevent leaks. Unscrew the nut to confirm adjustment range, then set the regulator and retighten to a secure, not over-driven, position.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLoosen hexagon socket nut before initial adjustment\u003c\/li\u003e\n  \u003cli\u003eVerify pressure range before fully tightening the nut\u003c\/li\u003e\n  \u003cli\u003eDo not over-screw the hex nut to avoid locking adjustment\u003c\/li\u003e\n  \u003cli\u003eCheck all fittings for leaks after startup\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? The FQRANBO 12-803 is aimed at DIY mechanics, weekend racers, and restoration projects using Holley or Edelbrock carburetors who want more consistent fuel pressure and easier on-car tuning. It suits anyone needing a compact, serviceable regulator with a readable gauge, whether fitting a street cruiser, track car, or custom build that requires reliable 4.5–9 PSI control.\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 regulator compatible with Holley and Edelbrock carburetors?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The FQRANBO 12-803 is designed as a direct-fit solution for Holley and Edelbrock carburetors within the 4.5–9 PSI range.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What happens if I overtighten the hexagon socket nut?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Overtightening can prevent pressure adjustment or cause leaks; loosen first to adjust, then retighten to a secure position without overdriving.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"FQRANBO","offers":[{"title":"Default Title","offer_id":48083861864606,"sku":"B0G3TDSD82","price":55.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/fqranbo-front-view.jpg?v=1785837517","url":"https:\/\/northtrailauto.ca\/products\/fqranbo-adjustable-fuel-pressure-regulator-12-803-4-5-9-psi-3-8-npt-gauge-port-metal-abs-1-in-2-out","provider":"North Trail Auto","version":"1.0","type":"link"}