Radium’s innovative Adjustable Fuel Pressure Regulator (FPR) Kit is designed to seamlessly integrate with the factory returnless system found on the Mazda MX-5 NB 01-05. The FPR is mounted using OEM threaded studs for an easy and secure installation. This kit reuses the OEM fuel feed line from the fuel pump to the fuel filter without alterations. A stainless steel SAE quick-connect plug is included to block off the spur on the OEM feed line. Additionally, two new 6AN fuel lines are included to connect to and from the FPR.
A fuel pressure gauge is conveniently positioned on the feed line next to the FPR for easy adjustment. The RA-series regulator boasts a groundbreaking 360-degree swivelling vacuum reference port, which is double O-dring sealed—the first of its kind in the industry. This feature allows installers to effortlessly adjust the vacuum fitting in any direction without needing tools. This system is suitable for all fuel types, including unleaded, leaded, oxygenated, and pre-mixes. Furthermore, they are compatible with alcohol blends of fuel, including methanol, ethanol, and E85.
No permanent modifications are required, and the kit is compatible with either the Radium Engineering or OEM fuel hangers. Instructions include bypassing the OEM FPR if the original fuel hanger is retained.
Radium Return Fuel Line Pressure Regulator Kit for Mazda MX-5 NB 01-05
Kit includes
- MPR-RA Fuel Pressure Regulator
- Fuel Pressure Gauge, 0-100psi
- Stainless Steel Mounting Bracket
- Anodized Aluminum Fittings
- SAE Quick Connect Fittings
- Hose Clamps and Hardware
- 6AN (3/8″) Fuel Hose