{"product_id":"radium-engineering-fpd-xr-inline-fuel-pulse-damper","title":"Radium 20-0200 FPD-XR Inline Fuel Pulse Damper Kit for -6\/-8\/-10AN Fuel Lines","description":"\u003cdiv id=\"tds-mobile-description\" vocab=\"https:\/\/schema.org\/\" typeof=\"Product\" style=\"display: none\"\u003e\u003cspan property=\"description\"\u003e\u003cp\u003eUpgrade your EFI fuel system with the Radium 20-0200 FPD-XR Inline Fuel Pulse Damper Kit. Designed for -6\/-8\/-10AN lines, it stabilizes fuel pressure, eliminating idle surge and lean spikes.\u003c\/p\u003e\n\u003cbr\u003e \u003cp\u003eBuilt for returnless setups, it features a wide 40-105 psi range, anodized aluminum for durability, and includes mounting hardware.\u003c\/p\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cmeta name=\"keywords\" content=\"Radium Inline Fuel Pulse Damper, Automotive Fuel Pressure Stabilizer, EFI Fuel System Component, Universal Fuel Pulse Damper, -6AN Fuel Line Accessory, High-Pressure Fuel Damper, Fuel Injector Pressure Stabilizer, Anodized Aluminum Fuel Damper, Returnless Fuel System Accessory, Fuel Compatibility Gasoline E85 Methanol\"\u003e\u003cmeta name=\"description\" content=\"Optimize fuel pressure with the Radium FPD-XR Inline Fuel Pulse Damper. Compatible with -6\/-8\/-10AN lines for reliable performance.\"\u003e\u003ch4\u003eVehicle Fitment\u003c\/h4\u003e\u003cul\u003e \u003cli\u003eUniversal - compatible with any EFI fuel system using a returnless\/FPR-style setup (not compatible with return-style fuel systems)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFitment Notes\u003c\/h4\u003e\u003cul\u003e \u003cli\u003eSold in multiple variants by fitting size - confirm you select the correct suffix for your fuel line: -01 (5\/16 in. barb, hose clamps required), -06 (-6AN adapter fittings), -08 (-8AN adapter fittings), or -10 (-10AN adapter fittings)\u003c\/li\u003e \u003cli\u003eBase static fuel pressure requirement: 40-105 psi (FPD-XR Extra Range) - for lower-pressure applications, Radium's more compact FPD-R (20-0199) may be a better fit\u003c\/li\u003e \u003cli\u003eVacuum\/boost reference line is optional if maximum fuel pressure does not exceed 105 psi\u003c\/li\u003e \u003cli\u003eCan be mounted at any angle, including upside down; install as close to the fuel rail(s) as practical and away from excessive heat\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFeatures\u003c\/h4\u003e\u003cul\u003e \u003cli\u003eAbsorbs fuel injector pressure pulses to stabilize fuel rail pressure across the RPM range\u003c\/li\u003e \u003cli\u003eExtra-range diaphragm supports a wider 40-105 psi base static pressure window than the standard FPD-R\u003c\/li\u003e \u003cli\u003eHelps eliminate idle surge and erratic lean AFR spikes (\"stumbling\"), especially with high-flow injectors\u003c\/li\u003e \u003cli\u003eVacuum\/boost reference port maintains proper damping performance even at elevated fuel pressures on rising-rate FPR setups\u003c\/li\u003e \u003cli\u003eAnodized and laser-engraved aluminum top with anodized aluminum body for corrosion resistance\u003c\/li\u003e \u003cli\u003eLarge 0.69 in. center bore with two inline inlet\/outlet ports (3\/4\"-16 UNF, 8AN ORB) for minimal flow restriction\u003c\/li\u003e \u003cli\u003e1\/8 in. NPT female port for a fuel pressure gauge or sensor\u003c\/li\u003e \u003cli\u003eCompatible with all fuel types, including gasoline, E85, and methanol blends\u003c\/li\u003e \u003cli\u003eIncludes M6 mounting bolts and nuts\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecifications\u003c\/h4\u003e\u003cul\u003e \u003cli\u003eType: Inline Fuel Pulse Damper (FPD-XR)\u003c\/li\u003e \u003cli\u003eBase Static Pressure Range: 40-105 psi\u003c\/li\u003e \u003cli\u003eHousing Ports: 3\/4\"-16 UNF, 8AN ORB\u003c\/li\u003e \u003cli\u003eGauge Port: 1\/8 in. NPT Female\u003c\/li\u003e \u003cli\u003eHeight: 2.60 in.\u003c\/li\u003e \u003cli\u003eMaterial: Anodized Aluminum\u003c\/li\u003e \u003cli\u003eFuel Compatibility: Gasoline, E85, Methanol, and Alcohol Blends\u003c\/li\u003e \u003cli\u003eSystem Compatibility: Returnless\/FPR Fuel Systems Only\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eIncluded Components\u003c\/h4\u003e\u003cul\u003e \u003cli\u003e1x FPD-XR Inline Fuel Pulse Damper\u003c\/li\u003e \u003cli\u003e1x Set Adapter Fittings (size per variant: -01, -06, -08, or -10)\u003c\/li\u003e \u003cli\u003e1x Set M6 Mounting Bolts and Nuts\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eProduct Description\u003c\/h4\u003e\u003cp\u003eThe Radium 20-0200 FPD-XR is an inline fuel pulse damper built to absorb the pressure oscillations created every time a fuel injector opens and closes. As the wider-range sibling of Radium's FPD-R, it uses the same internal diaphragm concept but is tuned for a broader 40-105 psi base static pressure window - useful on higher-pressure boosted setups where the standard-range damper isn't rated high enough.\u003c\/p\u003e\u003cp\u003eAn internal vacuum\/boost reference port lets the diaphragm response scale with manifold pressure, keeping damping performance consistent on rising-rate fuel pressure regulator setups even as boost climbs. At 2.60 inches tall, the FPD-XR is taller than the compact 1.98-inch FPD-R, so it needs a bit more clearance, but it delivers a wider effective pressure range as a tradeoff. It mounts at any angle, including upside down, using the included M6 hardware.\u003c\/p\u003e\u003cp\u003eBecause fuel line size varies by build, this damper is sold in several kit variants - a 5\/16 in. barb version for rubber hose, or -6AN, -8AN, and -10AN adapter versions for braided line - so order the variant matching your fuel line. It's intended for returnless\/FPR-style fuel systems only, not return-style setups, and is safe for use with gasoline, E85, and methanol blends.\u003c\/p\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":53985512915263,"sku":"RAD20-0200","price":104.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0832\/7308\/9343\/files\/1b75dd91c920ec5dc7c9c08683d1d7a9L.jpg?v=1783011813","url":"https:\/\/wcaperformance.com\/products\/radium-engineering-fpd-xr-inline-fuel-pulse-damper","provider":"WCA Performance","version":"1.0","type":"link"}