Yinlowa 255LPH Inline Fuel Pump Kit — 58 PSI LS Swap Filter‑Regulator, GSL392 Replacement

The Yinlowa 255LPH Inline Fuel Pump Kit is a complete replacement assembly that delivers a fixed 58 PSI to returnless LS fuel rails while filtering and returning excess fuel to the tank.

This kit pairs a high-flow 255 litres-per-hour external inline pump with an integrated 58 PSI filter-regulator designed for Gen III/IV LS-style returnless rails. It’s built for custom EFI swap projects—not a universal bolt-on solution—so confirm system pressure needs, hose sizes and plumbing layout before installation. The package includes adapters for common inlet, outlet and return fittings and comes with a one-year limited warranty.

How does this kit supply the steady 58 PSI my LS swap needs?

The included filter-regulator is pre-set to maintain 58 PSI at the returnless rail and routes surplus fuel back to the tank, protecting injectors from pressure swings. It combines pressure regulation with a filtration stage so contaminants are reduced before reaching sensitive fuel-system components.

• Fixed 58 PSI (4 bar) regulation matched to many Gen III/IV LS returnless rails.
• Returns excess fuel to the tank rather than dumping to atmosphere.
• Integrated filter captures particulates ahead of the fuel rail.
• Not intended as a universal or vehicle-specific pump without plumbing checks.

What are the electrical and flow capabilities of the 255LPH pump?

The pump produces up to 255 LPH at 12V, suitable for many single-pump gasoline EFI conversions where flow matches engine demand. It’s an inline external design recommended to be mounted low and close to the fuel tank with a compatible pre-filter to extend service life.

• 255 litres per hour rated flow at 12V for mid-range EFI demands.
• External inline format designed as a direct replacement for GSL392-style pumps.
• Best practice: mount below tank level and use a pre-filter ahead of the pump.
• Check wiring capacity and fuse sizing to match pump current draw.

Will this work for my LS swap or Corvette-style setup?

The kit is intended for returnless LS swap projects that require a 58 PSI rail pressure, including many 4.8L, 5.3L and 6.0L installations and setups resembling the 1999–2004 C5 Corvette filter-regulator layout. Before purchasing, verify your rail’s target pressure, plumbing path and port orientations to ensure compatibility.

• Designed for Gen III/IV LS-based returnless EFI rails that specify 58 PSI.
• References common OE and aftermarket part numbers for cross-checking fitment.
• Includes adapters for 3/8" inlet, 5/16" return, and 6AN-to-3/8" outlet connections.
• Not a universal repair solution—confirm physical port direction and hose sizes.

What’s included and what should a professional installer know?

The kit ships with the inline pump, a 58 PSI filter-regulator and three adapters covering common inlet/outlet/return sizes. Professional installation is recommended because correct routing, mounting, wiring and hose selection impact performance and safety.

• Included: 255LPH external inline pump, 58 PSI filter-regulator, 3/8" inlet adapter, 5/16" return adapter, 6AN-to-3/8" outlet adapter.
• Compare port geometry and plumbing layout with your build before fitting.
• Follow proper electrical sizing, fusing and grounding procedures for EFI pumps.
• Covered by a one-year limited warranty from the manufacturer.

Who this product is for: This Yinlowa pump kit suits mechanics, fabricators and experienced home builders performing Gen III/IV LS swaps or custom EFI conversions that use a returnless rail requiring a 58 PSI supply. It’s a practical choice when your system’s flow demand, electrical capacity and hose/regulator configuration align; if you’re unsure, consult a professional installer or compare part references to your original equipment before ordering.