{"product_id":"radium-engineering-8an-orb-direct-mount-regulator-rotating-assembly-dmr-ra-black","title":"Radium Engineering 8AN ORB Direct Mount Regulator Rotation Assembly (DMR-RA) - Black","description":"\u003cp data-start=\"31\" data-end=\"120\" class=\"PDq2pG_selectionAnchorContainer\"\u003e\u003cstrong data-start=\"31\" data-end=\"120\"\u003eThe Radium Direct Mount Regulator (DMR) is a high-performance, adjustable EFI fuel pressure regulator designed for high-flow fuel systems.\u003c\/strong\u003e\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"125\" data-end=\"188\" data-is-last-node=\"\"\u003eIts compact design allows for installation in tight spaces while delivering the superior performance required for high-flow fuel systems.\u003c\/p\u003e\n\u003ch3 data-section-id=\"71pl1\" data-start=\"44\" data-end=\"54\" class=\"PDq2pG_selectionAnchorContainer\"\u003e\n\n\u003cbr\u003e\u003cbr\u003eInstallation\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\n\u003c\/h3\u003e\n\u003cp data-start=\"56\" data-end=\"151\" class=\"\"\u003eUsing the included union fitting, it can be mounted directly to an \u003cstrong data-start=\"74\" data-end=\"88\"\u003e8AN ORB port\u003c\/strong\u003e. It is primarily compatible with the 8AN ORB ports featured on \u003cstrong data-start=\"105\" data-end=\"124\"\u003eRadium fuel rails\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"153\" data-end=\"214\"\u003eConversion adapters for mounting to \u003cstrong data-start=\"156\" data-end=\"167\"\u003e6AN ORB\u003c\/strong\u003e and \u003cstrong data-start=\"170\" data-end=\"182\"\u003e10AN ORB\u003c\/strong\u003e ports are also available separately.\u003c\/p\u003e\n\u003ch3 data-section-id=\"17sheu6\" data-start=\"216\" data-end=\"224\"\u003eCompatible Fuels\u003c\/h3\u003e\n\u003cp data-start=\"226\" data-end=\"267\"\u003eThe RA Series fuel pressure regulator is compatible with the following fuels:\u003c\/p\u003e\n\u003cul data-start=\"269\" data-end=\"322\"\u003e\n\n\u003cli data-section-id=\"1osyloa\" data-start=\"269\" data-end=\"277\"\u003eUnleaded Gasoline\u003c\/li\u003e\n\n\u003cli data-section-id=\"75ceky\" data-start=\"278\" data-end=\"286\"\u003eLeaded Gasoline\u003c\/li\u003e\n\n\u003cli data-section-id=\"qttxik\" data-start=\"287\" data-end=\"311\"\u003eOxygenated Fuels\u003c\/li\u003e\n\n\u003cli data-section-id=\"19d0kqr\" data-start=\"312\" data-end=\"322\"\u003ePremix Fuels\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp data-start=\"324\" data-end=\"349\"\u003eIt is also compatible with the following alcohol-based fuels:\u003c\/p\u003e\n\u003cul data-start=\"351\" data-end=\"387\"\u003e\n\n\u003cli data-section-id=\"4ozopb\" data-start=\"351\" data-end=\"358\"\u003eMethanol\u003c\/li\u003e\n\n\u003cli data-section-id=\"86mshy\" data-start=\"359\" data-end=\"366\"\u003eEthanol\u003c\/li\u003e\n\n\u003cli data-section-id=\"1o4i1s\" data-start=\"367\" data-end=\"372\"\u003eE85\u003c\/li\u003e\n\n\u003cli data-section-id=\"l396it\" data-start=\"373\" data-end=\"387\"\u003eOther Alcohol Blends\u003cbr\u003e\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"18xlgh6\" data-start=\"47\" data-end=\"65\" class=\"PDq2pG_selectionAnchorContainer\"\u003eMounting Instructions\u003c\/h3\u003e\n\u003cp data-start=\"67\" data-end=\"111\"\u003eThe regulator's \u003cstrong data-start=\"75\" data-end=\"90\"\u003emain inlet port\u003c\/strong\u003e features \u003cstrong data-start=\"91\" data-end=\"106\"\u003e6AN ORB female threads\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"113\" data-end=\"224\"\u003eBy using the included \u003cstrong data-start=\"116\" data-end=\"138\"\u003e360° rotating double-ended adapter\u003c\/strong\u003e, it can be mounted to a fuel rail equipped with an \u003cstrong data-start=\"147\" data-end=\"161\"\u003e8AN ORB port\u003c\/strong\u003e. It is designed for easy installation onto Radium Engineering fuel rails.\u003c\/p\u003e\n\u003cp data-start=\"226\" data-end=\"254\"\u003eOther swivel adapters are sold separately.\u003c\/p\u003e\n\u003cp data-start=\"256\" data-end=\"325\"\u003eIf not mounting directly to a fuel rail, various plumbing layouts can be achieved by installing optional adapters into the main inlet port.\u003c\/p\u003e\n\u003cp data-start=\"327\" data-end=\"410\"\u003eThe return port is \u003cstrong data-start=\"335\" data-end=\"346\"\u003e6AN ORB\u003c\/strong\u003e. The included \u003cstrong data-start=\"354\" data-end=\"378\"\u003e90° 6AN male swivel fitting\u003c\/strong\u003e rotates 360°, allowing for flexible hose routing.\u003c\/p\u003e\n\u003cp data-start=\"412\" data-end=\"466\"\u003eAdditionally, this product is equipped with \u003cstrong data-start=\"420\" data-end=\"441\"\u003etwo 1\/8\" NPT side ports\u003c\/strong\u003e to which you can attach the following options:\u003c\/p\u003e\n\u003cul data-start=\"468\" data-end=\"514\"\u003e\n\n\u003cli data-section-id=\"1qprac\" data-start=\"468\" data-end=\"473\"\u003eFuel Pressure Gauge\u003c\/li\u003e\n\n\u003cli data-section-id=\"xkx1ax\" data-start=\"474\" data-end=\"486\"\u003ePressure Sensor\u003c\/li\u003e\n\n\u003cli data-section-id=\"144k0ee\" data-start=\"487\" data-end=\"495\"\u003eTemperature Sensor\u003c\/li\u003e\n\n\u003cli data-section-id=\"1h5i03a\" data-start=\"496\" data-end=\"514\"\u003eOther 1\/8\" NPT Accessories\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp data-start=\"516\" data-end=\"547\"\u003e**Two 1\/8\" NPT plugs** are also included.\u003c\/p\u003e\n\u003ch3 data-section-id=\"b5xxje\" data-start=\"554\" data-end=\"561\"\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003ch3 data-section-id=\"b5xxje\" data-start=\"554\" data-end=\"561\"\u003eFuel Pressure Adjustment\u003c\/h3\u003e\n\u003cp data-start=\"563\" data-end=\"590\"\u003eThe RA Series allows for \u003cstrong data-start=\"571\" data-end=\"587\"\u003etool-free fuel pressure adjustment\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"592\" data-end=\"642\"\u003eLock nuts and set screws are no longer required; you can easily adjust pressure simply by turning the knob.\u003c\/p\u003e\n\u003cp data-start=\"644\" data-end=\"694\"\u003eThe design also prevents air leaks (vacuum\/boost leaks) that commonly occur at threaded connections.\u003c\/p\u003e\n\u003ch3 data-section-id=\"1dmn8ub\" data-start=\"701\" data-end=\"719\"\u003e\n\n\u003cbr\u003e1:1 Vacuum Reference\u003c\/h3\u003e\n\u003cp data-start=\"721\" data-end=\"758\"\u003eThe RA Series features an industry-first \u003cstrong data-start=\"735\" data-end=\"754\"\u003e360° rotating vacuum port\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"760\" data-end=\"809\"\u003eThe double O-ring seal ensures high airtightness while allowing the port to be oriented in any direction without tools.\u003c\/p\u003e\n\u003cp data-start=\"811\" data-end=\"843\"\u003eFour types of vacuum fittings are included to suit various applications:\u003c\/p\u003e\n\u003cul data-start=\"845\" data-end=\"1012\"\u003e\n\n\u003cli data-section-id=\"11g6awg\" data-start=\"845\" data-end=\"884\"\u003e\n\n\u003cstrong data-start=\"847\" data-end=\"860\"\u003e5mm Hose Barb\u003c\/strong\u003e\n\u003cul data-start=\"863\" data-end=\"884\"\u003e\n\n\u003cli data-section-id=\"6ecjd2\" data-start=\"863\" data-end=\"884\"\u003eFor 4–6mm vacuum hose\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-section-id=\"14f3e4h\" data-start=\"885\" data-end=\"919\"\u003e\n\n\u003cstrong data-start=\"887\" data-end=\"903\"\u003e3AN Male Fitting\u003c\/strong\u003e\n\u003cul data-start=\"906\" data-end=\"919\"\u003e\n\n\u003cli data-section-id=\"zwzj96\" data-start=\"906\" data-end=\"919\"\u003eFor 3AN hose ends\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-section-id=\"ok3c5w\" data-start=\"920\" data-end=\"963\"\u003e\n\n\u003cstrong data-start=\"922\" data-end=\"941\"\u003ePush-Connect Fitting\u003c\/strong\u003e\n\u003cul data-start=\"944\" data-end=\"963\"\u003e\n\n\u003cli data-section-id=\"1wq464f\" data-start=\"944\" data-end=\"963\"\u003eFor 1\/4\" OD plastic tubing\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-section-id=\"qasukm\" data-start=\"964\" data-end=\"1012\"\u003e\n\n\u003cstrong data-start=\"966\" data-end=\"978\"\u003eVacuum Plug\u003c\/strong\u003e\n\u003cul data-start=\"981\" data-end=\"1012\"\u003e\n\n\u003cli data-section-id=\"asi5e3\" data-start=\"981\" data-end=\"1012\"\u003eFor use with returnless systems or fixed fuel pressure\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cblockquote data-start=\"1014\" data-end=\"1044\"\u003e\n\n\u003cp data-start=\"1016\" data-end=\"1044\"\u003e\u003cstrong data-start=\"1016\" data-end=\"1044\"\u003eThe use of medium-strength thread locker is recommended during installation.\u003c\/strong\u003e\u003c\/p\u003e\n\n\n\u003c\/blockquote\u003e\n\u003ch3 data-section-id=\"1nl8558\" data-start=\"1051\" data-end=\"1062\"\u003e\u003cstrong\u003e\u003cbr\u003eSuperior Fuel Pressure Stability\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"1064\" data-end=\"1098\"\u003eOptimized through years of circuit and bench testing.\u003c\/p\u003e\n\u003cp data-start=\"1100\" data-end=\"1168\"\u003eThe newly designed \u003cstrong data-start=\"1104\" data-end=\"1123\"\u003estainless steel return orifice\u003c\/strong\u003e ensures laminar fuel flow, providing stable pressure control even at high flow rates.\u003c\/p\u003e\n\u003cul data-start=\"1170\" data-end=\"1221\"\u003e\n\n\u003cli data-section-id=\"aq3agf\" data-start=\"1170\" data-end=\"1199\"\u003e\u003cstrong data-start=\"1172\" data-end=\"1199\"\u003eMinimum pressure setting: 18.5 psi (approx. 1.3 bar)\u003c\/strong\u003e\u003c\/li\u003e\n\n\u003cli data-section-id=\"1l1cl95\" data-start=\"1200\" data-end=\"1221\"\u003e\u003cstrong data-start=\"1202\" data-end=\"1221\"\u003eMaximum pressure: Dependent on fuel pump performance\u003c\/strong\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp data-start=\"1223\" data-end=\"1266\"\u003e※Maximum fuel pressure is determined by the fuel pump relief valve and pump controller settings.\u003c\/p\u003e\n\u003ch3 data-section-id=\"1cyts6d\" data-start=\"1273\" data-end=\"1292\"\u003e\n\n\u003cbr\u003eFuel Pressure Drop After Engine Shutdown\u003c\/h3\u003e\n\u003cp data-start=\"1294\" data-end=\"1375\"\u003eIt is normal for fuel pressure to drop quickly after the engine or fuel pump stops, and \u003cstrong data-start=\"1330\" data-end=\"1375\"\u003ethis is normal behavior for aftermarket fuel pressure regulators.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1377\" data-end=\"1436\"\u003eThis is because the diaphragm seat and return orifice structures are designed for high flow and may not create a perfect seal.\u003c\/p\u003e\n\u003cp data-start=\"1438\" data-end=\"1462\"\u003ePlease rest assured that this is not a malfunction.\u003c\/p\u003e\n\u003cp data-start=\"1464\" data-end=\"1494\"\u003eOnce the fuel pump restarts, pressure will return to normal promptly.\u003c\/p\u003e\n\u003cp data-start=\"1496\" data-end=\"1499\"\u003eHowever, if you experience:\u003c\/p\u003e\n\u003cul data-start=\"1501\" data-end=\"1533\"\u003e\n\n\u003cli data-section-id=\"10ekhoe\" data-start=\"1501\" data-end=\"1516\"\u003eLong cranking times at startup\u003c\/li\u003e\n\n\u003cli data-section-id=\"yc27nv\" data-start=\"1517\" data-end=\"1533\"\u003eDelayed pressure buildup\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp data-start=\"1535\" data-end=\"1560\"\u003ethe issue may lie with the fuel supply system, such as:\u003c\/p\u003e\n\u003cul data-start=\"1562\" data-end=\"1602\"\u003e\n\n\u003cli data-section-id=\"b5n825\" data-start=\"1562\" data-end=\"1577\"\u003eInternal leak in pump module\u003c\/li\u003e\n\n\u003cli data-section-id=\"16clhv1\" data-start=\"1578\" data-end=\"1589\"\u003eFaulty check valve\u003c\/li\u003e\n\n\u003cli data-section-id=\"16u29cn\" data-start=\"1590\" data-end=\"1602\"\u003eFaulty venturi pump\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp data-start=\"1604\" data-end=\"1628\"\u003erather than the regulator itself.\u003c\/p\u003e\n\u003ch3 data-section-id=\"1n2bns\" data-start=\"1635\" data-end=\"1640\"\u003e\n\n\u003cbr\u003eFeatures\u003c\/h3\u003e\n\u003cul data-start=\"1642\" data-end=\"1806\"\u003e\n\n\u003cli data-section-id=\"qycq10\" data-start=\"1642\" data-end=\"1658\"\u003eSupports high-flow EFI systems\u003c\/li\u003e\n\n\u003cli data-section-id=\"14nyv2b\" data-start=\"1659\" data-end=\"1672\"\u003eTool-free adjustment\u003c\/li\u003e\n\n\u003cli data-section-id=\"1fjgqhf\" data-start=\"1673\" data-end=\"1690\"\u003e360° rotating vacuum port\u003c\/li\u003e\n\n\u003cli data-section-id=\"30rliw\" data-start=\"1691\" data-end=\"1710\"\u003e360° rotating inlet adapter\u003c\/li\u003e\n\n\u003cli data-section-id=\"192yunt\" data-start=\"1711\" data-end=\"1734\"\u003eCompact design for tight spaces\u003c\/li\u003e\n\n\u003cli data-section-id=\"1e28556\" data-start=\"1735\" data-end=\"1759\"\u003eDirect mount to 8AN ORB fuel rails\u003c\/li\u003e\n\n\u003cli data-section-id=\"1c2urt8\" data-start=\"1760\" data-end=\"1781\"\u003eSupports remote mounting (kit sold separately)\u003c\/li\u003e\n\n\u003cli data-section-id=\"1uujpvx\" data-start=\"1782\" data-end=\"1806\"\u003eTwo 1\/8\" NPT accessory ports\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"1i2e4qq\" data-start=\"1813\" data-end=\"1819\"\u003e\n\n\u003cbr\u003eWhat's Included\u003c\/h3\u003e\n\u003cul data-start=\"1821\" data-end=\"2023\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\n\n\u003cli data-section-id=\"zkeql4\" data-start=\"1821\" data-end=\"1835\"\u003eDMR regulator unit\u003c\/li\u003e\n\n\u003cli data-section-id=\"hgbxta\" data-start=\"1836\" data-end=\"1860\"\u003e5mm hose barb vacuum fitting\u003c\/li\u003e\n\n\u003cli data-section-id=\"1bkv8jo\" data-start=\"1861\" data-end=\"1880\"\u003eVacuum plug (for returnless)\u003c\/li\u003e\n\n\u003cli data-section-id=\"1kcy5y4\" data-start=\"1881\" data-end=\"1911\"\u003e1\/4\" push-connect vacuum fitting\u003c\/li\u003e\n\n\u003cli data-section-id=\"p6evtc\" data-start=\"1912\" data-end=\"1932\"\u003e3AN male vacuum fitting\u003c\/li\u003e\n\n\u003cli data-section-id=\"1wzqzvl\" data-start=\"1933\" data-end=\"1961\"\u003e6AN male 360° swivel return fitting\u003c\/li\u003e\n\n\u003cli data-section-id=\"1j23z1s\" data-start=\"1962\" data-end=\"2000\"\u003e8AN ORB 360° swivel inlet adapter\u003c\/li\u003e\n\n\u003cli data-section-id=\"utd15l\" data-start=\"2001\" data-end=\"2023\" data-is-last-node=\"\"\u003ePTFE 1\/8\" NPT plugs ×2\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eBefore Ordering\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e〇 About Import Consumption Tax\u003cbr\u003eAt Shafutoya, we pay the import consumption tax incurred during customs clearance on your behalf, so you will not be charged any additional fees beyond the total amount paid at checkout.\u003cbr\u003e\u003cbr\u003e〇 Compatibility Check\u003cbr\u003eOur product database is based primarily on North American (USDM) vehicles. Please verify compatibility with your Japanese (JDM) vehicle before ordering. (If you are unsure if a listed product is compatible with your vehicle, please feel free to contact us. Our support team will be happy to investigate for you.)\u003cbr\u003eWe cannot accept returns due to incompatibility if an order is placed without confirming compatibility first.\u003cbr\u003ePlease note that even if items are sorted by selecting the year, make, and model on our top page, this does not guarantee a direct \"bolt-on\" fit for Japanese-model vehicles.\u003cbr\u003eAll products have been translated into Japanese using translation software. If you encounter confusing expressions, please contact us before ordering.\u003cbr\u003e\u003cbr\u003e〇 Regarding Shipping\u003cbr\u003eShipping costs are paid at checkout. Estimates for shipping can be calculated automatically by entering your address on the checkout page. For large items like body parts, there may occasionally be a significant discrepancy between the automatic shipping calculation and the actual shipping cost. In such cases, we will contact you individually via email.\u003cbr\u003eEssentially, all products are shipped internationally from our U.S. warehouse. Unlike domestic shipping in Japan, international shipping takes approximately 7 to 14 days, so please allow sufficient time for your order. If you are in a hurry, please inquire about delivery times in advance. All products are shipped via air freight; they are not shipped by sea.\u003cbr\u003e\u003cbr\u003e〇 Regarding Japanese Vehicle Inspection Compliance\u003cbr\u003eAll products we handle are designed and manufactured outside of Japan. Please note that they do not comply with \"Japanese vehicle inspection standards,\" and we cannot provide strength evaluation documents or similar paperwork for these standards. Therefore, all parts are sold for \"circuit, private property, or off-road use only.\" Installation and use are at your own risk.\u003cbr\u003e\u003cbr\u003e〇 Regarding Warranty\u003cbr\u003ePlease inspect the contents of your order immediately upon arrival. Since all products are shipped internationally, packaging or products may occasionally sustain damage during transit. We will only provide returns, refunds, or replacements for damaged, defective, or incorrect items if notified within 7 days of receipt. Furthermore, for products sold through our store, warranty support will be handled exclusively through us. Please note that we do not provide support through other companies or agents located within Japan.\u003c\/p\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":41525798862903,"sku":"RAD20-1623-00","price":29070.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0259\/7502\/9815\/files\/image_d521ce60-4e5b-433e-924a-309e817df072.jpg?v=1741457390","url":"https:\/\/fivesquareusa.com\/en\/products\/radium-engineering-8an-orb-direct-mount-regulator-rotating-assembly-dmr-ra-black","provider":"Shaft Shop","version":"1.0","type":"link"}