{"product_id":"radium-engineering-subaru-ej-engines-fuel-rail-plumbing-parallel-2008-2021-subaru-sti-2gyq3k","title":"Radium Engineering Subaru EJ Engines Fuel Rail Plumbing - Parallel - 2008-2021 Subaru STI","description":"\u003cp style=\"text-align: center;\" data-mce-style=\"text-align: center;\"\u003e\u003cstrong\u003eRadium Engineering Subaru EJ Engines Fuel Rail Plumbing - Parallel\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cspan\u003eThese plumbing kits are designed to compliment Radium Engineering Subaru EJ fuel rail installations. This kit interfaces with the factory feed and returns hard lines in the engine bay (near the LH strut tower) and provides all the under hood fuel plumbing. This kit is compatible with all Radium Fuel Rails for the Subaru EJ engines (excluding 20-0499 Fuel Rails). All necessary fittings and hoses are included, along with a RA-Series FPR.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eRA-series regulators feature the first tool-less pressure adjustment. A jam nut and set screw are no longer required. With a simple turn of the knob, pressure will be increased or decreased.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eTo aid in adjusting pressure, there are incremental detents that provide haptic feedback to the user. Every detent permits 1psi (+\/-0.5psi) of adjustment depending on current fuel pressure. Furthermore, RA-series regulators feature a 360 degree swiveling vacuum reference port that is double O-ring sealed. This is the first in the industry. It permits the installer to quickly point the vacuum fitting in any direction with no tools required.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThere are 4 interchangeable 10-32 threaded vacuum port fittings provided to cover all scenarios. \u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e1. \u003cspan\u003eBarbed Fitting\u003c\/span\u003e: A black zinc-plated 3\/16\" (5mm) barb machined from high strength steel that is compatible with the following vacuum hoses: 5\/32\" (4mm), 3\/16\" (5mm), and 7\/32\" (6mm).\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e2. \u003cspan\u003e3AN Male Fitting\u003c\/span\u003e: A black zinc-plated adapter machined from high strength steel that is compatible with 3AN hose ends.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e3. \u003cspan\u003ePush-To-Connect\u003c\/span\u003e: A nickel-plated brass fitting with Buna-N O-rings that is compatible with hard plastic 1\/4\" OD tubing.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e4. \u003cspan\u003eVacuum Plug\u003c\/span\u003e: A black oxide stainless steel screw that is used to maintain a constant (non dynamic) fuel pressure. \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eTwo kits are offered; one that feeds the fuel rails in series, and another that feed the fuel rails in a parallel configuration. Both kits perform equally well. The end decision is based on personal preference. Scroll down for details on each kit.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eIMPORTANT NOTES\u003c\/strong\u003e\u003cbr\u003e1. Kit does not includes a fuel filter.\u003cbr\u003e2.Kit is not compatible with Radium dual port injector fuel rail kit 20-0499.\u003cbr\u003e3.Kit is safe to use with alcohol fuels such as methanol, ethanol, E85 etc.\u003cbr\u003e4.Kit uses 3\/8\" (6AN) high pressure EFI fuel hose.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eBecause the hoses and fittings are consolidated, the parallel kit is a good option for cleaning up the engine bay. Each fuel rail is fed as shown in the photo above. The feed and return lines enter the MPR-RA regulator from the rear and output through the front to the fuel rails.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe regulator secures to the LH strut tower using the provided stainless steel mounting bracket. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eA 0-100psi fuel pressure gauge is included for calibration. Fittings and 6AN hose are included to interface with the OEM feed and return hard lines. If aftermarket -AN hoses\/lines have replaced the factory piping, this kit can still be used\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCOMPATIBILITY\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003e2008-2014 Subaru Impreza STI\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e2015-2021 Subaru STI\u003c\/span\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":45712249192534,"sku":"RAD20-0984","price":113.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0741\/0411\/1190\/files\/zmxwnwn565uw_b60c08c5-79d1-467e-a245-6702cf54f73c.jpg?v=1788778956","url":"https:\/\/truegearus.com\/products\/radium-engineering-subaru-ej-engines-fuel-rail-plumbing-parallel-2008-2021-subaru-sti-2gyq3k","provider":"TrueGear","version":"1.0","type":"link"}