Get your LS engine swap handling like a pro with our Return‑Style LS AN Fuel Line Install Kit. Designed for return‑style fuel systems (pump and regulator mount outside the tank), this kit includes nearly everything needed for an EFI installation that’s clean, efficient, and visually impressive.

🔥 Why Choose This Kit?

• ✅ All‑inclusive bundle — PTFE hose, AN fittings, and crucial adapters
• ✅ Custom color options (hose and fittings) to match your engine bay
• ✅ Supports up to 600 HP with a Lifetime Warranty
• ✅ Expert tech support to help you get it right the first time

⚠️ The Problem

LS swaps involve many variables—choosing hose types, lengths, fittings, and adapters can be a headache. Mis‑matching components risks leaks, poor performance, or safety concerns. Most AN kits leave you to sort it all yourself, often without support or customization.

✅ The Solution

Our Return‑Style Swap Kit brings simplicity and precision. This bundle is pre‑engineered to work together, reducing setup time and guesswork so you can get back to what matters—building and driving.

💡 Kit Highlights:

• Premium PTFE-lined AN hose (E85 and methanol safe)
• Pre-configured AN hose end fittings in multiple angles
  
• Lifetime warranty on hose and fittings
• Tech support included to assist with specifics of your setup

🔧 Essential Adapter Links:

• Metric-to‑AN Adapter for GM OBS Sending Units – Converts metric OEM sending-unit threads to AN‑6 connections
• Hard‑Line Tube to AN Male Adapter Fittings – Connects factory hard‑lines (3/8″, 5/16″) to AN hose systems

🔌 Need Extra Hose End Fittings?

• AN PTFE Hose End Fittings Collection – includes straight, 45°, 90°, 180° AN‑6, AN‑8, AN‑10 ends for custom routing

🚗 Use the Right Fuel Pump Inline or In tank:

In Tank pump options

• Spectra 190 LPH Pump – ideal for stock LS builds up to ~450 HP
• Walbro 255 LPH Pump – suitable up to ~600 HP
• Aeromotive 340 LPH Pump – for high-performance builds up to ~850 HP

In line pump options

• Walbro 255 LPH Inline Pump – suitable up to ~600 HP

🧼 Finish with a Clean Fuel Filter:

A fuel filter is required in a Return-style LS swap 10 Micron or better post pump filter is required. 

We recommend the factory style inline fuel filter

• Factory‑Style Inline Fuel Filter with AN‑6 Fittings – High-flow, inline filter to keep your injectors and pump clean
• Other available fuel filters – Higher performance and alternative inline filters for pre-pump, post-pump, and more. 

🎯 Fitment & Use

• Designed for return‑style EFI LS swaps in cars, trucks, SUVs, or hot rods
• Includes metric and hard‑line adapters for OE sending‑unit and line compatibility
• Custom hose and fitting colors to match your engine bay aesthetic
• Lifetime warranty and expert support included inside the box

✨ Closing Statement

Don’t settle for mismatched hose and fittings. Our Return‑Style AN Fuel Line Kit delivers OEM-level compatibility, high-performance capacity, and clean style — all bundled together for an easier install. Fully supported with metric and hard-line adapters, pump and filter links, and finish options, this kit helps you build with confidence and pride.