{"product_id":"holley-12-842-billet-bypass-return-style-fuel-press-regulator-4-5-9-psi-adj","title":"Holley 12-842 Billet Bypass Return Style Fuel Press Regulator 4.5-9 Psi Adj.","description":"\u003cdiv\u003e\n\u003cp\u003eDesigned for carbureted street and strip applications, the Holley 12-842 Billet Bypass Return Style Fuel Pressure Regulator delivers precise fuel pressure control with a durable billet build and an idle bleed feature for stable idle performance.\u003c\/p\u003e \u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eAdjustable fuel pressure from 4.5 to 9 psi with idle bleed for precise idle control and steady cruise performance\u003c\/li\u003e \u003cli\u003eConstructed from 6061-T6 billet aluminum with a black anodized base and a clear anodized top for corrosion resistance and a clean, high-end look\u003c\/li\u003e \u003cli\u003eReturn-style regulator designed for systems with a return line back to the fuel tank, helping maintain consistent pressure under varying loads\u003c\/li\u003e \u003cli\u003ePort configuration: one 3\/8\" NPT inlet, one 3\/8\" NPT outlet, and one 3\/8\" NPT return (bypass); includes a 1\/8\" NPT gauge port for easy monitoring\u003c\/li\u003e \u003cli\u003eComparable and interchangeable with Holley® 12-803BP regulator\u003c\/li\u003e \u003cli\u003eIncludes mounting bracket for straightforward installation\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy it matters for your carbureted setup\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eStable idle and mid-range performance thanks to the idle bleed, which helps control idle pressure precisely\u003c\/li\u003e \u003cli\u003eConsistent fuel delivery during high- and low-rpm operation by returning excess fuel to the tank, reducing pulsation and pressure spikes\u003c\/li\u003e \u003cli\u003eDurable, race-proven construction with a visually appealing, corrosion-resistant finish that stays looking good mile after mile\u003c\/li\u003e \u003cli\u003eFlexible monitoring with an optional 1\/8\" NPT gauge port to keep an eye on pressure under load\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eSpecifications and compatibility\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eRegulator type: Billet bypass, return-style fuel pressure regulator\u003c\/li\u003e \u003cli\u003ePressure range: 4.5–9 psi\u003c\/li\u003e \u003cli\u003ePorts: Inlet 3\/8\" NPT, Outlet 3\/8\" NPT, Return 3\/8\" NPT\u003c\/li\u003e \u003cli\u003eGauge port: 1\/8\" NPT\u003c\/li\u003e \u003cli\u003eMaterial: 6061-T6 billet aluminum with black base and clear top for protection and aesthetics\u003c\/li\u003e \u003cli\u003eIncludes mounting bracket\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":47285405515946,"sku":"12-842","price":405.9,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/7829\/4698\/files\/s-l1600_5b45e8f9-7eb5-4c2e-b695-560d67ca34ab.webp?v=1753942682","url":"https:\/\/tgmperformance.com.au\/products\/holley-12-842-billet-bypass-return-style-fuel-press-regulator-4-5-9-psi-adj","provider":"TGM Performance Parts","version":"1.0","type":"link"}