A-1 Racing Products O-Ring Boss Plug AN Fitting

The A-1 Racing Products O-Ring Boss Plug is an AN-style ORB plug (also called an O-ring boss port plug or AN port plug). It seals off unused O-ring boss ports on fuel, oil, and fluid system components. It suits racing, performance, and custom fabrication work where a clean, dependable port seal is needed.

Key Features:

• Straight-thread O-ring boss design that seals with an O-ring instead of the threads
• Blocks off unused ports on fuel rails, regulators, filters, pumps, coolers, manifolds, and adapter blocks
• Sold in multiple AN/ORB sizes to match common port dimensions
• Made by A-1 Racing Products, a supplier of AN fittings and racing plumbing components

Choose the size that matches your port. Each size is available as its own part number in this product line.