DeatschWerks 8AN Male Flare to M18x1.5 Male Inverted Flare Adapter

If you're setting up a custom fuel system or need to adapt an existing line to a different fitting size, this adapter from DeatschWerks is a solid option. It allows you to connect an 8AN fitting to a port that uses an M18x1.5 inverted flare thread. This is common when adapting aftermarket fuel rails or regulators to factory components that might have a different thread size.

This adapter is made from aluminum, making it lightweight for its purpose. The male flare on one end is for standard 8AN hoses or fittings, while the male inverted flare on the other end is specifically designed to seal with M18x1.5 inverted flare ports. It’s a straightforward piece that does exactly what it's supposed to do: bridge two different fitting sizes reliably.