The FueLab 59501 Ultralight is a billet-aluminium EFI fuel pressure regulator with two -AN8 inlet ports and a -AN6 return, adjustable from 25-90 PSI (1.7-6.2 Bar) - built roughly 30% lighter than Fuelab's 515/525 Series.
Overview
The 595 Ultralight Series trims weight out of the standard EFI regulator body without giving up flow or adjustability, making it a good fit for weight-sensitive engine bay builds, race cars, and tight installations.
Specifications
- Application: EFI
- Minimum Pressure: 25 PSI / 1.7 Bar
- Maximum Pressure: 90 PSI / 6.2 Bar
- Inlet Port Size: 2 x AN8
- Return Port Size: AN6
- Gauge Port Size: 1/8" NPT
- Construction: Billet aluminium, premium anodised finish
- Fuel Compatibility: Petrol, diesel, methanol, and ethanol
- Warranty: Limited lifetime warranty
Key Features
- Roughly 30% lighter than Fuelab's 515/525 Series regulators
- Two -8AN inlet ports and one -6AN return port
- Compact design for tight engine bay installations
- Fine thread pitch for precise pressure adjustment
- 1/8" NPT gauge port with plug for an external pressure gauge
- 1/8" NPT pressure reference port with barbed fitting
How It Compares
Need -10AN inlets instead of -8AN at the same 25-90 PSI range? See the FueLab 51501 (standard 515 Series) or the FueLab 53501 Mini (-6AN, 50% lighter).
FAQ
Is the 59501 an EFI or carburettor regulator?
EFI - it adjusts from 25 to 90 PSI, a fuel-injection pressure range, not a carburettor range.
How much lighter is it than the standard 515 Series?
Fuelab rates the Ultralight 595 Series at roughly 30% less weight than the 515/525 Series body.
