Wabco 8931042942 Firewall

Description

This bulkhead, also known as a firewall, is a critical fitting within air brake systems. It's designed for use in heavy-duty vehicles and trailers, ensuring secure connections within the compressed air network. This component meets OE specification, providing reliable performance and durability. The bulkhead measures 28 x 28 x 40 mm and features M22 x 1.5, M16 x 1.5, and M22 x 1.5 thread connections. It's manufactured by Wabco with MPN 8931042942.

Key Features & Benefits

A firewall, in this setup, isn’t like what you think of in a computer. It’s basically a filter and a pressure regulator combined into one neat little unit. It takes the air pressure coming from your air compressor, cleans it up by removing water and oil – things that can mess up your whole system – and then reduces it to a usable level for things like your brakes, suspension, and other air – powered components. It’s got a filter element inside that catches the contaminants, and a regulator that keeps the pressure steady. Think of it as the first line of defense for your entire air system. It sits between the air compressor and everything else, protecting those more sensitive parts. The air compressor creates air, but it's often not clean air. This part ensures everything downstream gets nice, dry, regulated air. It's usually located somewhere near the compressor itself, maybe on the frame rail.

Symptoms, Risks & Replacements

It’s incredibly important because moisture and oil in the air lines will gradually eat away at seals, corrode valves, and ultimately cause failures. It acts like a shield for everything else in the system. You’ll notice if this thing goes bad usually because your brakes will feel spongy, your suspension might not operate properly, or you might get warning lights on your dash. Basically, your air system won't work consistently. A good firewall keeps things running smoothly and prevents costly repairs down the road. You can find these pretty easily at places like Fixparts Online, and honestly, replacing it as part of regular maintenance is a smart move.

Warranty Information

Wabco Firewall (MPN 8931042942) comes with a 1-year warranty.