{"product_id":"cnpapc-12-804-adjustable-fuel-pressure-regulator-with-gauge-holley-edelbrock-1-4-psi-3-8-npt","title":"CNPAPC 12-804 Adjustable Fuel Pressure Regulator with Gauge — Holley \u0026 Edelbrock, 1-4 PSI, 3\/8 NPT","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThe CNPAPC 12-804 Adjustable Fuel Pressure Regulator with Gauge is designed for carbureted engines that use Holley or Edelbrock carburetors. This regulator sits between the fuel pump and carburetor to offer tunable pressure and a clear gauge readout, helping you monitor and adjust fuel delivery as needed. Built to fit typical carbureted systems, it uses 3\/8-inch NPT ports with a 1 in, 2 out configuration, making it a practical addition to many classic and performance builds.\u003c\/p\u003e\n\u003cp\u003eThe regulator is anchored by OE-level references 12-804 and 12804, making it a familiar replacement option for projects that aim to preserve original specifications while allowing for on-the-fly tuning. The included gauge provides a quick glance at fuel pressure, enabling informed adjustments during setup or tuning sessions.\u003c\/p\u003e\n\n\u003ch3\u003eWhat you get\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eRegulator body with adjustable range from 1 to 4 PSI\u003c\/li\u003e\n  \u003cli\u003e0–15 PSI gauge for real-time pressure monitoring\u003c\/li\u003e\n  \u003cli\u003eThree mounting screws for straightforward installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eKey benefits and real-world use\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdjustable Pressure Range:\u003c\/strong\u003e Fine-tune fuel pressure to suit different engines and carburetors, potentially supporting stable fuel delivery from pump to carburetor and reducing overflow or rough idling.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eComplete Kit:\u003c\/strong\u003e Everything needed for setup is included—regulator, gauge, and screws—so you can install with confidence on 3\/8\" NPT ports (1 in, 2 out).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable Construction:\u003c\/strong\u003e Made from premium zinc alloy for corrosion resistance and heat tolerance, aiming for long service life in demanding conditions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStable Performance:\u003c\/strong\u003e Precise fuel flow regulation helps mitigate pressure spikes and valve overload, contributing to smoother idle and more efficient combustion potential.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eIn real-world scenarios, this regulator can support restoration projects, street builds, and hobbyist engines where a tunable fuel supply aligns with the carburetor setup. Results depend on the full fuel system, so consider this regulator as a flexible adjustment tool rather than a guaranteed upgrade. Always confirm port compatibility and follow installation best practices for your specific engine.\u003c\/p\u003e\n\n\u003ch3\u003eCompatibility and installation notes\u003c\/h3\u003e\n\u003cp\u003eOE Replacement: Part numbers 12-804 \/ 12804. Please double-check the part number before installing.\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 is included in the kit?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The regulator, a 0–15 PSI gauge, and three mounting screws are included.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What ports and compatibility does it support?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Designed for 3\/8\" NPT ports; fits most carbureted systems with Holley or Edelbrock compatibility.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"CNPAPC","offers":[{"title":"Default Title","offer_id":42470025101397,"sku":"B0FNMWXN81","price":48.58,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0632\/3270\/4597\/files\/cnpapc-12-804-adjustable-fuel-regulator-with-gauge-holley-edelbrock-1-4psi-3-8npt.jpg?v=1778116729","url":"https:\/\/plentytorque.co.uk\/products\/cnpapc-12-804-adjustable-fuel-pressure-regulator-with-gauge-holley-edelbrock-1-4-psi-3-8-npt","provider":"PlentyTorque","version":"1.0","type":"link"}