GM LS non return fuel system plumbing kit with Walbro fuel pump, hoses, and connectors on a white background
LS swap returnless fuel line kit with labeled fittings and technical specifications on a white background
GM LS Non-Return Style Fuel System Plumbing Kit
GM LS Non-Return Style Fuel System Plumbing Kit
GM LS non return fuel system plumbing kit with Walbro fuel pump, hoses, and connectors on a white background
LS swap returnless fuel line kit with labeled fittings and technical specifications on a white background
GM LS Non-Return Style Fuel System Plumbing Kit
GM LS Non-Return Style Fuel System Plumbing Kit

GM LS Non-Return Style Fuel System Plumbing Kit

WA01019

$585.99
/
Shipping calculated at checkout.

This GM LS Non-Return Style Fuel System Plumbing Kit were made using the same fuel system we run in our own LS swaps, rock crawlers, race cars, and custom chassis builds. Specifically for returnless LS fuel rails, this kit regulates pressure at the tank and removes the need for a return line from the engine bay.

The system is built for off-road reliability using a Walbro 255 LPH fuel pump and Fragola -6 AN nylon race hose and fittings. By integrating the filter/regulator assembly, the kit maintains consistent fuel pressure while simplifying plumbing and reducing clutter at the engine.

Included Components:

  • (6) -6 AN Straight Fittings
  • (3) -6 AN 90° Fittings
  • (1) 3/8" Quick Disconnect to -6 AN Straight
  • (1) 3/8" Quick Disconnect to -6 AN 90°
  • (1) 5/16" Quick Disconnect to -6 AN
  • (1) 3/8" Female to -6 AN Fitting
  • (1) Filter/Regulator Assembly (Returnless Style)
  • (1) Walbro 255 LPH Fuel Pump with Sleeve & Clamps
  • (2) Pump Fittings to -6 AN
  • (20 ft) -6 AN Premium Nylon Race Hose
Specifications
  • Fuel System Type: Non-Return (Returnless LS Fuel Rail)
  • Application: GM LS Engines & LS Swaps
  • Hose Size: -6 AN
  • Hose Length: 20 Feet
  • Fuel Pump Flow Rating: 255 Liters Per Hour
  • Regulator Style: Filter/Regulator Combination Unit
  • Fittings: Fragola Performance
  • Hose Type: Fragola Nylon Race Hose
Fitment
  • Designed for GM LS engines using non-return (returnless) fuel rails
  • Ideal for:
    • LS swaps
    • Tube chassis rock crawlers
    • Ultra4 and race builds
    • Custom off-road rigs

For traditional return-style LS fuel systems, check out the WOD LS Return Fuel System Kit.

Tech Insight

This GM LS Non-Return Style Fuel System is centered around a reliable Walbro 255 LPH pump and engineered to provide stable fuel pressure for naturally aspirated LS engines and moderate performance applications.

By pairing a filter/regulator unit and flexible -6 AN hose, the kit offers:

 

  • Simplified Routing: Drastically reduces engine bay plumbing, which is ideal for tight mid- or rear-engine buggy chassis.
  • Off-Road Durability: Proven to withstand the extreme vibration and abuse of rock crawling and racing.
  • Cleaner Packaging: Maintains high flow capacity while keeping the layout organized and easy to maintain