{"product_id":"fqranbo-adjustable-fuel-pressure-regulator-with-gauge-1-4-psi-range-3-8-npt-1-in-2-out","title":"FQRANBO Adjustable Fuel Pressure Regulator with Gauge — 1–4 PSI Range, 3\/8\" NPT 1-in 2-out","description":"\u003cp\u003e\u003cstrong\u003eFQRANBO 12-804 is an adjustable fuel pressure regulator with an integrated gauge that lets you set and maintain 1–4 PSI for Holley and Edelbrock carbureted engines.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis compact regulator is built to replace or upgrade factory units on single-carburetor setups, offering precise control of pump-to-carburetor fuel pressure. It combines a 3\/8\" NPT gauge port in a 1-in, 2-out housing, a fine-tuned restrictor orifice, and a durable metal\/ABS construction to resist heat, pressure, and corrosion found in engine bays.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this regulator improve carburetor performance?\u003c\/h3\u003e\n\u003cp\u003eMaintaining correct fuel pressure helps the carburetor meter fuel consistently across throttle range and load conditions. The 12-804's adjustable knob and internal stabilizer let you trim pressure to the sweet spot for your carburetor, reducing flooding or lean spots caused by pump overpressure.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAdjustable 1–4 PSI range for precise tuning\u003c\/li\u003e\n  \u003cli\u003e0.220-inch (7\/32\") restrictor orifice for proper fuel flow\u003c\/li\u003e\n  \u003cli\u003eIntegrated gauge port for on-vehicle monitoring and diagnosis\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill it fit my Holley or Edelbrock carburetor installation?\u003c\/h3\u003e\n\u003cp\u003eThe 12-804 was designed for direct compatibility with many Holley and Edelbrock single-carb setups. Its 3\/8\" NPT gauge port and the 1-in, 2-out body make plumbing straightforward in most stock and aftermarket fuel lines, though line adapters may be required for some installs.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDirect-fit compatibility with common Holley and Edelbrock models\u003c\/li\u003e\n  \u003cli\u003e3\/8\" NPT gauge port simplifies adding or swapping a pressure gauge\u003c\/li\u003e\n  \u003cli\u003eCompact footprint fits tight engine compartments\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the installation and adjustment tips I should know?\u003c\/h3\u003e\n\u003cp\u003eInstall the regulator inline between the fuel pump and carburetor, following fuel-system safety practices. Unscrew the hex socket nut during initial setup so the knob can be adjusted; once pressure is set, re-seat the nut to lock the adjustment and avoid leaks or accidental movement.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLoosen hexagon socket nut before adjusting pressure\u003c\/li\u003e\n  \u003cli\u003eSet pressure within 1–4 PSI and then secure the nut to prevent leaks\u003c\/li\u003e\n  \u003cli\u003eIf pressure reading is unstable, contact the supplier for troubleshooting\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow durable and accurate is the gauge and body design?\u003c\/h3\u003e\n\u003cp\u003eThe regulator uses a metal and ABS mix to withstand high temperatures and corrosive engine environments while minimizing weight. The upgraded gauge scale offers 1 PSI increments for more reliable tuning than coarse 20 PSI scales, helping avoid misadjustment.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMetal and ABS construction for heat and corrosion resistance\u003c\/li\u003e\n  \u003cli\u003ePrecision scale with 1 PSI minimum adjustment increments\u003c\/li\u003e\n  \u003cli\u003eInternal pressure-stabilizing structure for steady readings\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The FQRANBO 12-804 is aimed at enthusiasts and mechanics running Holley or Edelbrock carburetors who need a compact, serviceable regulator to fine-tune fuel pressure. It suits street rods, classic cars, hot rods, and track vehicles that run a single-carb setup and require repeatable pressure control for reliable tuning and drivability. If you need easy gauge monitoring, a durable housing, and a regulator designed to be adjustable on-vehicle, this model gives a straightforward, cost-effective upgrade.\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: What pressure range can I set with the 12-804 regulator?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: You can adjust the regulator between 1 and 4 PSI for carburetor fuel supply.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does this fit Holley and Edelbrock carburetors directly?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes—it's designed for direct compatibility with many Holley and Edelbrock single-carb setups, using 3\/8\" NPT fittings.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"FQRANBO","offers":[{"title":"Default Title","offer_id":48083525533854,"sku":"B0GHLZT23S","price":55.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/fqranbo-front-view-mounted-regulator.jpg?v=1785834175","url":"https:\/\/northtrailauto.ca\/products\/fqranbo-adjustable-fuel-pressure-regulator-with-gauge-1-4-psi-range-3-8-npt-1-in-2-out","provider":"North Trail Auto","version":"1.0","type":"link"}