-4 Aluminum Dust Plug 20pk

The -4 Aluminum Dust Plug 20pk from AEROQUIP is an essential accessory for any serious vehicle builder or engine swap specialist. These compact aluminum plugs serve as protective caps for -4 AN (JIC) port openings, preventing contamination and debris from entering critical fluid lines when components are disconnected or stored. Maintaining port cleanliness is crucial for system reliability and longevity during modifications.

Constructed from lightweight aluminum, these plugs resist corrosion and are designed to withstand extreme underhood temperatures. The -4 designation refers to the JIC thread size and port diameter, ensuring compatibility with standard -4 AN fittings found in fuel systems, brake lines, and transmission coolers. This makes them ideal for engine rebuilds and custom fuel system installations.

The 20-pack quantity provides adequate coverage for multi-system projects or allows for maintaining spares for future builds. This reduces downtime and prevents cross-contamination when swapping between different hydraulic connections. Professional fabricators and engine builders will appreciate the lightweight profile of aluminum, which is essential for weight-sensitive applications.