16an Male Clamshell to 20an O-Ring Boss Str.

The 16 AN Male Clamshell to 20 AN O-Ring Boss Straight adapter is an essential hydraulic coupling for serious boaters and anglers who demand reliable fluid transfer in high-pressure marine systems. Whether you're running fuel, oil, or coolant lines through a custom engine setup or retrofit application, this straight-port adapter bridges two different AN fitting standards without complexity. XRP-XTREME RACING PRODUCTS engineered this connector for environments where pressure consistency and zero-leak performance aren't negotiable—exactly the conditions you face on the water.

Constructed from black anodized aluminum, the 16 AN Male Clamshell to 20 AN O-Ring Boss adapter combines lightweight durability with corrosion resistance—critical traits in saltwater and freshwater marine environments. The clamshell design on the 16 AN side allows quick hand-tight assembly without specialized tools, while the 20 AN O-ring boss port (ORB) on the opposite end creates a sealed, leak-proof connection under load. The straight configuration eliminates unnecessary bends, reducing stress on fittings and hose runs while improving flow dynamics through your fuel or cooling system. Aluminum construction keeps weight minimal—especially important when every pound matters in a performance boat or high-output engine bay.

This adapter suits custom marine engine builds, supercharged or turbocharged setups, and retrofit fuel-system upgrades where OEM fittings don't match modern high-flow requirements. Boaters upgrading from factory plumbing to aftermarket fuel rails, remote-mounted filters, or performance cooling circuits rely on XRP adapters to maintain pressure integrity under sustained throttle. Installation is straightforward: tighten the clamshell side by hand or with a wrench until snug, then secure the ORB side into your component's ported boss. Ensure hose or tubing compatibility with both AN sizes before ordering to guarantee a seamless fit in your system.