Corvette-Style 58 PSI Filter/Regulator — LS Swap (Includes AN-6 Adapters)

The simplest path to a return-less LS: regulate to ~58 PSI at the tank, run a single AN-6 feed to the rail, and send excess fuel right back to the tank. This unit combines a fixed-pressure regulator and EFI filter in one body and ships with AN-6 adapters for all three ports (IN, OUT, RETURN) for clean, leak-free plumbing.

• ✅ Fixed ~58 PSI for Gen III/IV LS
• ✅ IN / OUT / RETURN clearly labeled
• ✅ Includes -6 AN adapters (all ports)
• ✅ Ideal for return-less layouts
• ✅ Mounts near tank to reduce heat & noise

How it plumbs (return-less)

1. Pump → IN (on this filter/regulator).
2. OUT → Rail feed (single AN-6 line to engine bay).
3. RETURN → Tank (short return line at the rear).

Specs & guidance

• Base pressure: ~58 PSI (typical Gen III/IV LS)
• Ports: IN / OUT / RETURN — supplied with -6 AN ends
• Native Corvette QC sizes: 3/8″ feed/outlet, 5/16″ return
• Placement: mount near the tank on the frame; follow arrow for flow direction
• Filtration: Use a ≤10 µm EFI filter. For stock/near-stock flow, see our Factory-Style Inline Filter Kit (AN-6); for higher flow, shop the Fuel Filters collection.
• Fuel compatibility: gasoline; confirm element choice if running E85

Pairs perfectly with

• Return-Less LS Fuel Line Kit (PTFE AN-6) — single feed to the rail; clamps & fittings included.
• AN adapter fittings — sending-unit and tank return ports.
• Install tools — cutter, vise jaws, and AN wrenches.

Install instructions & Hose 101

• Installation hub — mounting tips & routing diagrams.
• PTFE hose & AN fittings — step-by-step
• AN Hose 101 articles — regulators, filters, routing fundamentals.

FAQs