Wabco 8939203402 Elbow Plug

Description

The Wabco 8939203402 Elbow Plug is a critical component within air brake systems, designed to securely terminate tubing and maintain air pressure. This fitting is commonly used in the construction and maintenance of commercial vehicle air brake lines. Its OE specification ensures a precise fit and reliable performance, contributing to a safe and efficient braking system. This elbow plug measures 15 x 40 x 30 mm and features ports for 8 connections with tube diameters of 6 x 1 mm, 4.9 mm, and 9.1 mm, and a wrench size of 12.0 mm.

Key Features & Benefits

This little guy basically seals off an open port in your air brake system. It’s a threaded fitting, so you screw it in tight to create a leak – proof closure. Think of it as a stopper, preventing air – and moisture – from getting into places it shouldn’t. It comes in different thread sizes, naturally, to fit various components. It’s part of your air brake system, so it's important for stopping power. When a line or component gets disconnected or replaced, you’ll often need one of these to plug the opening. It's not something that makes the brakes work directly, but it keeps the system sealed and functioning as it should. You’ll find them used on air tanks, compressors, and various control valves.

Symptoms, Risks & Replacements

Air brake systems rely on consistent air pressure. Any leak, even a small one, can affect braking performance. This plug acts like a shield, preventing those leaks from happening when you have an open port. You’ll notice if one is missing or damaged pretty quickly – you might hear a hissing sound, or your brakes might feel spongy. It’s a small part, but a critical one for safety. You can find a good selection of them, in all the common sizes, over at Fixparts Online, if you need to replace one. They're inexpensive to replace, and honestly, better to be safe than sorry when it comes to brakes.

Warranty Information

Wabco Elbow Plug (MPN 8939203402) comes with a 1-year warranty.