Air Filter Assembly

When it comes to compressed air systems, clean air is everything. Whether you’re running an air suspension setup, onboard air system, air horns, or pneumatic accessories, the quality of air entering your compressor directly affects performance, efficiency, and long-term reliability. The Viair Direct Inlet Air Filter Assembly with Gray Plastic Housing and 1/4" Male NPT Port is engineered to protect your investment by filtering airborne contaminants before they ever reach your compressor.

Designed for durability, ease of installation, and consistent airflow, this direct inlet air filter assembly is an essential upgrade or replacement component for Viair compressors and compatible air systems. Compact, lightweight, and highly effective, it delivers dependable filtration in both daily-driven vehicles and demanding performance applications.

High-Quality Gray Plastic Housing Design

The gray plastic housing used in this Viair inlet filter is lightweight yet durable, making it ideal for mobile and vibration-prone environments such as vehicles, trailers, and off-road applications. Unlike metal housings that can corrode or add unnecessary weight, this high-impact plastic construction resists cracking, corrosion, and environmental wear.

Benefits of the Plastic Housing:

• Lightweight design minimizes stress on compressor inlet threads

• Corrosion-resistant for long-term reliability

• Ideal for under the hood, trunk, or frame-mounted installations

• Withstands vibration from compressors and vehicle movement

The neutral gray finish blends seamlessly into most air management setups, keeping your system clean and professional-looking.

Direct Inlet Configuration for Simple Installation

This air filter assembly features a 1/4" Male NPT (National Pipe Thread) connection, allowing it to thread directly into compatible compressor inlet ports or air intake fittings. The direct inlet design eliminates the need for additional adapters, hoses, or brackets in many installations.

Installation Advantages:

• Direct screw-in design reduces installation time

• Secure NPT threading prevents air leaks

• Compatible with most Viair compressors and many universal air systems

• Ideal for tight spaces where inline filters won’t fit

Whether you’re replacing a worn-out intake filter or upgrading your system for better longevity, this filter installs quickly with minimal tools.

Included Replaceable Filter Element

Each Viair Direct Inlet Air Filter Assembly comes complete with one replaceable filter element. This internal element captures dust, dirt, and airborne debris while maintaining proper airflow to the compressor.

Why Replaceable Filter Elements Matter:

• Extends compressor life by keeping contaminants out

• Maintains consistent airflow and pressure output

• Allows easy maintenance without replacing the entire housing

• Cost-effective long-term solution

Regular inspection and replacement of the filter element is recommended, especially in dusty environments, off-road vehicles, or high-duty-cycle systems.

Optimized Airflow Without Restriction

One of the biggest concerns when adding an intake filter is airflow restriction. Viair engineers this inlet filter assembly to strike the perfect balance between filtration efficiency and unrestricted air intake.

The internal design allows the compressor to draw in the air it needs without excessive resistance, helping to maintain:

• Proper compressor RPM

• Lower operating temperatures

• Efficient duty cycles

• Consistent pressure output

This ensures your air system performs as intended without unnecessary strain on the compressor motor.

Ideal for Air Suspension & Air Ride Systems

If you’re running an air suspension setup, your compressor is the heart of the system. Any reduction in airflow or increase in contamination can result in slower fill times, increased heat, and eventual system failure.

This Viair direct inlet filter is ideal for:

• Bagged trucks and SUVs

• Air ride-equipped cars

• Show vehicles with trunk-mounted compressors

• Daily drivers with air suspension

By protecting your compressor from contaminants, you ensure smoother operation, quicker response times, and long-term reliability—whether you’re airing up at a show or adjusting ride height on the road.

Perfect for Onboard Air (OBA) & Utility Applications

Beyond air suspension, this filter assembly is equally valuable in onboard air systems used for:

• Off-road tire inflation

• Air tools

• Pneumatic lockers

• Air horns

• Trailer air systems

In these environments, airborne debris is common. A high-quality intake filter helps prevent dust and dirt from damaging your compressor during trail use or jobsite operation.

Compact Design for Tight Install Spaces

Space is often limited when installing air management components. This Viair direct inlet filter is compact and low-profile, making it ideal for:

• Engine bays

• Frame-mounted compressors

• Trunks and under-floor setups

• Side-mounted air tanks

The direct inlet design reduces clutter and simplifies routing, giving you a cleaner and more efficient install.

Technical Specifications

• Product Type: Direct Inlet Air Filter Assembly

• Housing Color: Gray

• Housing Material: High-impact plastic

• Connection Type: 1/4" Male NPT

• Mounting Style: Direct inlet (thread-on)

• Filter Element: Included (1)

• Application: Air compressors, air suspension, onboard air systems

Maintenance & Best Practices

To get the most out of your Viair Direct Inlet Air Filter Assembly, regular maintenance is recommended.

Maintenance Tips:

• Inspect the filter element periodically for dirt buildup

• Replace the filter element when visibly dirty or clogged

• Avoid installing in areas exposed to water spray without protection

• Ensure threads are clean and properly sealed during installation

Proper maintenance helps ensure optimal airflow and maximum compressor lifespan.

Final Thoughts

The Viair Direct Inlet Air Filter Assembly with Gray Plastic Housing and 1/4" Male NPT Port is a small component that delivers big protection. By ensuring clean air enters your compressor, it helps maintain performance, reduce wear, and extend the life of your air system.

Whether you’re building a show-quality air suspension setup, upgrading an onboard air system, or simply replacing a worn intake filter, this Viair filter assembly is a smart, reliable choice backed by proven design and functionality.

Clean air in. Reliable performance out. That’s the Viair difference.