{"product_id":"radium-fpr-ra-fuel-pressure-regulator-kit-subaru-sti-08-21","title":"Radium Engineering FPR RA Fuel Pressure Regulator Kit for Subaru STI 2008-2021","description":"\u003ch2\u003eRadium FPR RA Fuel Pressure Regulator Kit - Subaru STI 08-21\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eApplication:\u003c\/strong\u003e Subaru WRX STI (2008-2021) – EJ257\u003cbr\u003e\n\u003cstrong\u003ePart Type:\u003c\/strong\u003e Fuel pressure regulator kit with RA-series multi-port regulator\u003cbr\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 20-0965\u003c\/p\u003e\n\u003chr style=\"margin: 20px 0; border: 0; border-top: 1px solid #000;\"\u003e\n\u003cp\u003eThe Radium FPR Kit replaces the OEM fuel pressure regulator and damper assembly on the 2008-2021 Subaru WRX STI. The factory STI layout is a quasi dead-end system – this kit reroutes fuel through the fuel rails first, then through the regulator and back to the tank, the arrangement Subaru tuners prefer for curing stumbling issues. The vacuum reference is also rerouted from the #4 cylinder runner to the intake plenum for a steadier signal.\u003c\/p\u003e\u003cp\u003eThe RA-series regulator installs in the OEM regulator location and features tool-less pressure adjustment, a single stainless steel return orifice for laminar flow and a 360° swivelling, double O-ring sealed vacuum port.\u003c\/p\u003e\n\u003chr style=\"margin: 20px 0; border: 0; border-top: 1px solid #000;\"\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReturn-Style Routing:\u003c\/strong\u003e Fuel passes through the rails before the regulator and returns to the tank\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImproved Vacuum Reference:\u003c\/strong\u003e Rerouted from the #4 cylinder runner to the intake plenum for a steadier signal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Location:\u003c\/strong\u003e Regulator installs where the factory regulator was mounted\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStable Pressure:\u003c\/strong\u003e Single stainless steel return orifice designed for laminar flow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool-less Adjustment:\u003c\/strong\u003e Turn the knob to set fuel pressure – detents give approx. 1 psi (±0.5 psi) per click, no jam nut or set screw\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSwivel Vacuum Port:\u003c\/strong\u003e 360° swivelling, double O-ring sealed vacuum reference port\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterchangeable Vacuum Fittings:\u003c\/strong\u003e Four 10-32 threaded fittings: 5mm barb, 3AN male, push-to-connect and vacuum plug\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel Compatibility:\u003c\/strong\u003e All petrol types (unleaded, leaded, oxygenated, pre-mix) plus methanol, ethanol and E85\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr style=\"margin: 20px 0; border: 0; border-top: 1px solid #000;\"\u003e\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eRA-series multi-port fuel pressure regulator\u003c\/li\u003e\n\u003cli\u003eOE fuel line disconnect tool\u003c\/li\u003e\n\u003cli\u003eSAE quick connect to AN adapters\u003c\/li\u003e\n\u003cli\u003eEFI hose and PushLok hose ends\u003c\/li\u003e\n\u003cli\u003eVacuum hose\u003c\/li\u003e\n\u003cli\u003eAll necessary fittings and installation hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr style=\"margin: 20px 0; border: 0; border-top: 1px solid #000;\"\u003e\n\u003ch3\u003eOptional Parts\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e\n\u003ca href=\"\/products\/radium-fuel-pressure-gauge-w-8an-orb-adapter\"\u003eRadium Fuel Pressure Gauge w\/8AN ORB Adapter (20-0386)\u003c\/a\u003e – Installs in the unused 8AN ORB port on the regulator for setting and monitoring fuel pressure\u003c\/li\u003e\u003c\/ul\u003e\n\u003chr style=\"margin: 20px 0; border: 0; border-top: 1px solid #000;\"\u003e\n\u003ch3\u003eImportant Notes\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eRadium lists fitment for the USDM 2008-2021 WRX STI with the EJ257 engine only – contact us to confirm fitment for your vehicle\u003c\/li\u003e\n\u003cli\u003eFuel pressure gauge is sold separately\u003c\/li\u003e\n\u003cli\u003eA rapid fuel pressure drop after shut-off is normal for aftermarket regulators – pressure resets when the pump runs again\u003c\/li\u003e\n\u003cli\u003eLong cranking or slow pressure build-up is not caused by the regulator – it typically indicates fuel draining back to the tank from an internal pump module leak (e.g. venturi jet pump or missing check valve)\u003c\/li\u003e\n\u003cli\u003eInstallation instructions are available in the Instructions tab\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr style=\"margin: 20px 0; border: 0; border-top: 1px solid #000;\"\u003e\n\u003ch3\u003eVehicle Fitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eSubaru WRX STI (2008-2021) – EJ257 engine only\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003eIf you're unsure whether this will fit your vehicle, contact our team of experts via email at \u003ca href=\"mailto:hello@iilumolab.com\"\u003ehello@iilumolab.com\u003c\/a\u003e and send through a few photos of the car for us to verify fitment.\u003c\/p\u003e\u003ch3\u003eInstallation\u003c\/h3\u003e\u003cp\u003eWe always recommend professional fitment for guaranteed satisfaction. If you're wanting a hassle-free installation, feel free to contact our friendly team as we offer installation services in-store at our Melbourne workshop. For more details, contact us \u003ca href=\"https:\/\/iilumolab.com.au\/pages\/contact-us\"\u003ehere\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003e\u003cstrong style=\"color: red;\"\u003eNote\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eUpon receiving the item, please ensure that the part is indeed the correct item you have ordered. This can be achieved by checking labels on the packaging. Please also ensure a proper test fit of the item is conducted prior to paint and\/or installation. Returns\/Warranty claims will be voided if the item has been tampered with, or is no longer in resalable\/new condition.\u003c\/p\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":50614021456034,"sku":"20-0965","price":471.99,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0501\/9739\/7666\/files\/20-0965_c9ab8a86-b957-4ef7-87a3-6ce4b4d7d771.jpg?v=1791952573","url":"https:\/\/iilumolab.com.au\/products\/radium-fpr-ra-fuel-pressure-regulator-kit-subaru-sti-08-21","provider":"iilumolab","version":"1.0","type":"link"}