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Aeroflow's 550 series fittings are the choice of professionals for use in fuel systems
DBlack Finish
If you have your coil mounted in the passenger compartment
By raising the supercharger it removes a large restriction in air flow which will allow more air thus more horsepower to be gained along with the ability to reduce the intake temperatures as well
2018 BMW 420d 2
Billet Bypass Fuel Pressure Regulator 4.5-9psi Adjustable AF49-4500R Product:Red Finish. 3/8" NPT Ports with Bottom Return Aeroflow's 550 series fittings areBillet Bypass Fuel Pressure Regulator 4. 5 9psi AdjustableRed Finish. 3 8" NPT Ports with Bottom Return AF49 4500R 49 4500R Aeroflow Bypass 4. 5 9 PSI regulator is available with either 3 8" NPT or 8ORB female threads and are the perfect choice for fuel systems running a return line to the tank with added benefit of less load on the fuel pump resulting in quieter fuel pump operation, cooler fuel and improved fuel pump life. Available in blue, black
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