2Pcs 6AN Fuel Adapter Fit For To 3/8 & 5/16 GM Quick Connect W/Thread EFI Female

6AN Fuel Adapter for GM Quick Connect

These 6AN fuel adapters convert a 6AN female thread to a 3/8 inch and 5/16 inch GM quick connect fitting for EFI fuel systems, giving you a clean way to tie aftermarket fuel lines into factory style connections.

Overview

This 2 piece 6AN fuel adapter set lets you join a 6AN hose end to 3/8 inch and 5/16 inch GM quick connect ports in EFI applications. Each 6AN fuel adapter is machined for a secure, leak resistant seal under fuel pressure. Ideal for fuel line repairs, engine swaps, and aftermarket EFI builds that use GM style quick connect fittings.

Built For Performance

• Aluminum construction keeps weight low while resisting fuel system corrosion
• 6AN female thread on one end for standard 6AN hose fittings
• 3/8 inch and 5/16 inch GM quick connect ends cover both common line sizes
• Anodized finish resists oxidation inside and out
• Threaded body allows a stable, torque ready connection
• Sold as a pair so both feed and return lines can be handled together

Fits These Machines

• for GM vehicles with 3/8 inch quick connect EFI fuel lines
• for GM vehicles with 5/16 inch quick connect EFI fuel lines
• for EFI fuel systems using 6AN hose and fittings

On-The-Job Use

• Fuel line repair on GM EFI equipped cars and trucks
• Engine swap builds that need to adapt factory lines to 6AN hose
• Aftermarket fuel system installs with GM quick connect ports
• Fuel rail and return line connections on EFI setups

Specs At A Glance

Good To Know

Q: Do I need sealant on these adapters? A: A thread sealant rated for fuel can help, but always check the connection under pressure before driving. Follow your fuel system maker's guidance for the 6AN end.

Q: Will these fit both 3/8 and 5/16 inch lines? A: Yes, the set provides adapters for both the 3/8 inch and 5/16 inch GM quick connect sizes. Confirm the line size on your vehicle before ordering.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.