Fuelab 53501 is a compact, high-performance, adjustable EFI mini fuel pressure regulator designed for high-performance vehicles, motorsport, and other EFI fuel systems where installation space is limited and precise fuel pressure control is essential. The regulator weighs approximately 50% less than the Fuelab 515 and 525 series while delivering the same high level of pressure control and reliability.
The internal bypass design ensures stable fuel pressure during idle, part throttle, and full load. The integrated 1:1 vacuum/boost reference allows fuel pressure to follow manifold pressure, maintaining a constant pressure differential across the fuel injectors. The regulator is compatible with gasoline, diesel, E85, ethanol, and methanol, making it suitable for both street and motorsport applications.
Fuel pressure is continuously adjustable from 25 to 90 PSI (approximately 1.7–6.2 bar). The fine adjustment thread allows precise fuel pressure tuning. The regulator features two AN6 ORB inlets and one AN6 ORB return port, providing excellent flexibility when designing EFI fuel systems.
Fuelab 53501 includes a flexible stainless steel mounting bracket, a 1/8" NPT gauge port with plug, and a 1/8" NPT vacuum/boost port with hose fitting. The anodized billet aluminum construction provides excellent corrosion resistance and long service life under demanding conditions.
Specifications:
Type: Adjustable EFI mini fuel pressure regulator
Material: CNC-machined billet aluminum
Finish: Anodized
Fuel type: Gasoline, diesel, E85, ethanol, and methanol
Adjustable pressure: 25–90 PSI (approximately 1.7–6.2 bar)
Inlets: 2 x AN6 ORB
Return port: 1 x AN6 ORB
Gauge port: 1/8" NPT
Vacuum port: 1/8" NPT
Vacuum/boost reference: 1:1
Mounting: Stainless steel mounting bracket included
