{"product_id":"top-feed-fuel-rail-kit","title":"Top Feed Fuel Rail Kit","description":"The Perrin Performance Top Feed Fuel Rail Kit (PSP-FUL-201BK) is engineered to provide consistent and equal fuel delivery to each cylinder, a critical upgrade for modified Subaru WRX and STI engines. Unlike stock fuel rails that route fuel sequentially, potentially under-fueling later injectors, the PERRIN design splits incoming fuel evenly, ensuring consistent Air Fuel Ratios and enabling tuners to run leaner at high load and RPM for increased horsepower and safer operation.\n\nThe kit features a 3\/8” ID DOT-approved rubber fuel injection hose with a Pyroshield heat-insulating silicone cover, capable of withstanding extreme engine bay heat up to 500 degrees and supporting up to 800WHP. This construction helps dampen fuel pressure waves, promoting smoother, more constant fuel pressure and preventing fuel vaporization.\n\nInstallation is made more secure with superior Oetiker crimping clamps, which provide a gap-free seal that won't loosen over time, unlike traditional worm drive clamps. Integrated phenolic risers are included to act as insulators between the fuel rail and the engine heads, keeping fuel temperatures at ambient levels and preventing a potential rise of over 30 degrees Fahrenheit. This product comes with a 5-year warranty from PERRIN Performance.\n\n***ATTENTION***: 2004-2006 Subaru STI models came with side-feed fuel rails. To use this top-feed kit on these models, special Japan Spec top feed TGV's are required, as the side-feed type will not work. The 2007 STI is a direct fit. This item may be for off-road use only depending on local regulations.","brand":"Perrin Performance","offers":[{"title":"Default Title","offer_id":52663244521784,"sku":"PSP-FUL-201BK","price":539.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687523692.jpg?v=1784325300","url":"https:\/\/store.motormia.co\/products\/top-feed-fuel-rail-kit","provider":"MOTORMIA","version":"1.0","type":"link"}