Earl's Performance Plastic Caps & Plugs for AN Fittings

Earl's Performance Plastic Caps and Plugs are an essential shop accessory for any performance mechanic or enthusiast working with AN plumbing systems. Designed to temporarily seal open fittings and hose ends, these lightweight protective accessories guard your plumbing components against contamination during service work, teardowns, routine maintenance, and storage.

Key Features:

• AN Fitting Compatibility — Engineered to fit standard AN-style fittings, providing a secure, snug seal on open ports and hose ends
• Contamination Protection — Keeps dirt, debris, and moisture out of disconnected fittings and stored hoses, maintaining cleanliness throughout your plumbing system
• Tool-Free Installation — Lightweight plastic construction allows for fast, simple hand installation and removal in any shop environment
• Available in Multiple Sizes — Offered across a broad range of AN sizes to accommodate the full spectrum of performance plumbing configurations
• Versatile Application — Suitable for fuel systems, oil systems, cooling circuits, brake lines, and virtually any AN-plumbed performance application
• Convenient Multi-Piece Packaging — Sold in practical sets so you always have the right cap or plug on hand throughout a build or repair

Keeping a supply of Earl's plastic caps and plugs in your toolbox is one of the simplest and most effective ways to maintain system cleanliness and shop organization throughout any project. Whether you're tearing down a race car, servicing a high-performance street build, or storing components between sessions, these caps and plugs ensure open AN fittings and hose ends stay protected at all times.

About Earl's Performance: Founded by Earl Fouts in 1955 in Lawndale, California, Earl's Performance Products pioneered the supply of high-quality AN plumbing components to the racing and performance industry. With decades of motorsport heritage, Earl's offers a comprehensive line of hoses, hose ends, fittings, and plumbing accessories trusted by professional racers and enthusiasts worldwide — from fuel and oil systems to brake lines and cooling circuits.