Radiator mount Alphacool ES D-Plug Black Brass 2 cm 54 g

The Alphacool ES D-Plug is a compact brass connector with two G1/4" male threads designed to join water-cooling components such as radiators, GPU and CPU coolers inside a closed loop. It is available in a black finish, has a nominal length of 2 cm and a lightweight construction (54 g) while providing a secure, serviceable connection for tight installations.

Advantages

The ES D-Plug differs from conventional double nipples by using a push-fit design rather than a threaded coupling, with two closely fitting O-rings on the male part ensuring a tight seal. The connector has been tested by Alphacool to withstand pressures up to 1.5 bar. It also offers a variable length: pulling the two halves apart provides up to 15 mm of extension to compensate for small alignment errors and to avoid hose twisting during assembly. Replacement O-rings in different colours are included.

Suitable for

• Connecting radiators to CPU or GPU water blocks in custom loops
• Quick replacement or temporary disconnection of water-cooling components
• Installations with limited space where a compact connector is required

Key specifications

• Manufacturer: Alphacool
• Series: ENTERPRISE SOLUTIONS (ES)
• Type: D-Plug, push-fit connector
• Threading: 2 × G1/4" male
• Material: brass
• Finish: black
• Nominal length: 20 mm (product variant 2 cm)
• Weight: 54 g
• Maximum tested pressure: 1.5 bar
• Adjustable extension: up to 15 mm
• Includes replacement O-rings in three colours

How to use

Insert the male end of the ES D-Plug into a compatible G1/4" female port until both O-rings are fully recessed in the female component to ensure proper sealing. If additional length is required, pull the two halves apart to extend the connector up to 15 mm and then insert. To disconnect, pull the connector apart and remove the male part from the female thread. No threaded screwing is required for normal installation and removal.

Recommendations

Always ensure both O-rings of the male component are fully seated inside the female component to maintain stability and watertightness. Verify compatibility with G1/4" fittings and inspect O-rings for damage before installation.