Fuelab Fuel System Components & Regulators

Fuelab Fuel System Components & Regulators

Fuelab has established itself as a premium manufacturer of precision fuel system components designed for high-performance EFI applications where conventional fuel system hardware falls short under sustained high-load conditions. Known for their billet aluminum construction, tight pressure regulation tolerances, and comprehensive AN-ported product line, Fuelab components are used by professional race teams and serious street performance builders who demand measurable fuel pressure stability across the full RPM and load range. Every Fuelab product is engineered with a focus on internal flow efficiency, with oversized passages and precision-machined valve seats that minimize pressure drop while maintaining regulation accuracy. Whether you are building a naturally aspirated high-revving engine or a high-boost forced induction platform, Fuelab offers a component for every position in the fuel system from tank to rail.

Popular Upgrades

Top-selling Fuelab products include the 515 Series adjustable billet regulator available in 25 to 90 PSI ranges for return-style EFI systems, the 818 Series Velocity fuel pump delivering 290 LPH in a compact external housing for tight chassis installations, and the 81801 and 82801 inline fuel filter series with stainless element and 10-micron filtration for high-pressure EFI circuits. The Fuelab 529 fuel pressure regulator with built-in manifold port is popular for boosted applications where vacuum or boost reference is needed for proper pressure scaling. Fuelab's fuel pump speed controllers, including the Quick-Start PWM controller, are also widely used in fuel systems pairing an electric fuel pump with an engine management system that modulates pump speed for efficiency.

Performance and Handling

Fuelab regulators use a large diaphragm area and precision-lapped valve seat to achieve pressure set-point accuracy within 0.5 PSI across the full flow range, which is significantly tighter than budget regulators that can swing 2 to 3 PSI between idle and wide-open throttle. This regulation precision translates directly to more consistent air-fuel ratios across throttle transitions, reducing the fuel trim corrections needed from the ECU and making tuning more stable and repeatable. For boosted applications, Fuelab's boost-referenced regulators scale fuel pressure linearly with manifold pressure, maintaining the correct differential pressure across the injectors regardless of boost level.

How does a Fuelab regulator compare to an Aeromotive regulator for a boosted build?

Both Fuelab and Aeromotive produce excellent boost-referenced regulators, and the choice often comes down to port configuration preference and adjustment range. Fuelab regulators are noted for their very stable set-point under rapid flow changes and their compact housing that fits into tight chassis locations. Aeromotive regulators have a slightly larger selection of bypass flow capacities at the high end, which is advantageous for very high-flow dual-pump systems above 1,000 horsepower. For most street and track builds under 800 horsepower, both brands perform at a similar level of pressure accuracy and long-term reliability.

Are Fuelab components compatible with ethanol and E85 fuel?

Yes, all current-production Fuelab regulators, filters, and fuel pumps are rated for use with ethanol blends including E85 and methanol-blended fuels, using Viton diaphragm materials and stainless internal components throughout. Fuelab recommends verifying that all upstream and downstream hose and fitting materials are also ethanol-compatible before converting a fuel system to E85 to avoid material degradation from the oxygenated fuel. The increased fuel flow required by E85 applications should be accounted for in regulator bypass capacity selection, as E85 builds typically require 30 percent more fuel volume than the same horsepower target on gasoline.

Why These Parts Fit Right

Every Fuelab component in this collection is listed with pressure range, flow capacity, inlet and outlet AN sizing, and fuel compatibility to ensure a proper match to your system specifications. Product pages include dimensional drawings and pressure flow curves for precise system design. Orders ship from US-based warehouses with fast delivery to keep your fuel system build on schedule.

Complete your Fuelab-equipped build with high-flow air intake systems, release your power gains with performance exhaust systems, and support your chassis with suspension upgrades matched to your output level.