Fuelab adjustable fuel pressure regulators are designed with performance and flexibility in mind. Available in several configurations with pressure ranges from as low as 4 Psi for carburettor applications and as high as 90 Psi for EFI applications.Compatible with petrol, diesel, methanol and ethanol fuels the Fuelab fuel pressure regulators feature a billet aluminium body and a fine pitch threaded adjuster to enable more precise pressure adjustments.Similar in design to the popular 515xx Series regulators but with only 1 inlet. The inlet port is -6 AN (JIC) and the return port is -6 AN (JIC). The return port is in line rather than underneath so it is possible to fit in tighter locations.The pressure reference port is 1/8 NPT and is supplied with a barbed fitting, the regulator also has a 1/8 NPT port to allow the fitting of a fuel pressure gauge.All Fuelab products are covered by a Forever Fixed warranty. The warranty covers the original purchaser against all material or workmanship