Earl's Performance Aluminum AN O-Ring Port Plugs - Allen Head

Earl's Performance Aluminum AN O-Ring Port Plugs with Allen Head drive are precision-machined fittings engineered to cleanly and reliably seal unused AN ports in fuel, oil, coolant, hydraulic, and other high-performance fluid systems. Whether finishing a competition build or cleaning up a street performance plumbing system, these port plugs deliver a professional, leak-free solution wherever an open AN port needs to be capped.

Key Features:

• Precision-machined from high-strength 2024 aluminum for an excellent strength-to-weight ratio
• Slim, low-profile design with an internal Allen head hex drive for clean, easy installation and removal
• Integrated O-ring seal provides reliable, leak-free performance in pressurized fluid systems
• Available in anodized finishes for corrosion resistance and a professional appearance
• Compatible with fuel, oil, coolant, hydraulic, and other high-performance fluid systems
• Covers a full range of AN port sizes to suit a variety of plumbing configurations
• Legal for use on emissions-controlled, non-emissions-controlled, and racing-only vehicles

Earl's Performance Plumbing has been at the forefront of high-performance automotive plumbing since 1955, when founder Earl Fouts pioneered the supply of aircraft-grade plumbing components to the racing industry. Today, as part of the Holley family of brands, Earl's continues that legacy with one of the most extensive lines of AN plumbing products available — and these AN O-Ring Port Plugs are a reflection of that decades-long commitment to precision, quality, and race-proven reliability.