-3 Male to Special 9/16- 18 Inverted Flare Power

The XRP -3 Male to Special 9/16-18 Inverted Flare Power fitting adapter is engineered for boaters and marine mechanics who demand reliability in high-pressure fuel and hydraulic systems. Built to connect -3 AN male ports to 9/16-18 inverted flare male threads, this straight adapter eliminates the guesswork when retrofitting fuel lines, cooler systems, or hydraulic controls on performance boats and water sports vessels. Whether you're upgrading fuel delivery on a high-horsepower outboard or restoring a classic runabout's original plumbing, this adapter ensures a leak-free seal where standard fittings won't fit.

Constructed from nickel-plated steel and rated for 1/4-inch hardline tubing, the -3 Male to Special 9/16-18 Inverted Flare Power adapter delivers corrosion resistance and structural integrity in salt and freshwater environments. The inverted flare connection on the 9/16-18 side creates a positive mechanical lock that withstands vibration and pressure cycling—critical when running fuel at sustained RPM or managing high-flow hydraulic circuits. The straight configuration minimizes dead space and turbulence, reducing heat generation and improving system efficiency across extended trips on the water.

This adapter is ideal for custom fuel system builds, aftermarket cooling upgrades, and OEM-to-aftermarket plumbing conversions on inboard and outboard motors. Anglers and tournament boaters running modified fuel-delivery systems will appreciate the XRP-XTREME RACING PROD. heritage—these fittings are proven in high-vibration, high-pressure racing applications and translate directly to marine duty. Installation requires basic wrenching; ensure hardline is cut square and deburred before threading, and apply thread sealant compatible with gasoline or oil to the 9/16-18 connection for maximum security and longevity.