Heavy-Duty Air Dryers for Diesel Engines
Air dryers are essential components in every diesel-powered heavy-duty truck. They remove moisture, oil, and contaminants from compressed air before it reaches braking and control systems, ensuring reliable operation under demanding road and weather conditions. High-performance heavy duty truck parts such as these help protect valves, compressors, and tanks from premature wear and corrosion. Designed for fleets, mechanics, and repair facilities, these systems enhance pneumatic stability and overall safety. Each air dryer assembly or cartridge maintains consistent air pressure, improves system efficiency, and extends the service life of key commercial truck parts. With proven aftermarket quality, they support the demanding requirements of Class 8 trucks in long-haul and vocational applications. Backed by reliable engineering and tested performance, PAI Industries air dryers deliver precision fit, quick installation, and dependable results. Choosing the right diesel engine parts for your truck keeps compressors running smoothly, prevents line freezing in cold climates, and reduces maintenance costs across your entire fleet.
Featured Air Dryer Assemblies and Cartridges
- Cummins X15 Kenworth AD-IS Air Dryer – 745-801266
- Mack Freightliner AD-9 Air Dryer – R955205
- Mack International AD-9 Air Dryer Cartridge – 745-107796
- Mack Navistar AD-IP Air Dryer – 26QE434P9
- Mack AD-SP Air Dryer – 745-800887
- Freightliner Kenworth Peterbilt AD-IS Air Dryer – 745-800383
- Universal AD-9 Air Dryer – 745-65225
Technical Datasheet – General Air Dryer Specifications
Function: Removes moisture and oil aerosols from compressed air to protect valves, tanks, and lines. Working Pressure: 120–130 PSI (purge 105–115 PSI). Heater Voltage: 12V or 24V with sealed weatherproof connectors. Operating Temperature: −40°C to +60°C (−40°F to +140°F). Flow Capacity: Suitable for compressors rated 12–27 CFM. Media: High-efficiency desiccant with integrated oil coalescing filter. Construction: Aluminum or steel housings with corrosion-resistant coating. Maintenance: Replace cartridge annually or every 100,000 miles for optimal protection of replacement engine parts.
Explore the Complete Collection
Browse the full Air Dryer Collection — Find assemblies, cartridges, purge valves, and service kits engineered for professional-grade heavy truck parts performance.
Technical Guidance
During maintenance, inspect hoses and fittings for leaks, check the purge valve operation, and ensure proper heater functionality. When replacing cartridges, always drain system pressure and confirm torque values according to OEM specifications. Choosing aftermarket truck parts that meet OEM standards ensures maximum reliability and extends the life of your compressor and brake system. Consistent air pressure keeps braking systems responsive and safe during long hauls. Upgrading to modern truck repair parts like these helps fleets reduce downtime, lower maintenance costs, and maintain compliance with air system performance standards.
FAQs
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How often should air dryer cartridges be replaced?
Cartridges should be replaced every 12 months or 100,000 miles, depending on climate and duty cycle. Timely replacement protects diesel truck parts from moisture damage. -
Are these air dryers compatible with OEM systems?
Yes. Each model meets OEM specifications for direct replacement in Freightliner, Kenworth, Peterbilt, Volvo, Mack, and Navistar applications, supporting USA truck parts integration. -
What symptoms indicate a failing air dryer?
Water in air tanks, longer compressor run times, and air leaks during purge cycles indicate service is required. Replacing worn components prevents failures across heavy duty parts. -
Why choose PAI Industries air dryers?
PAI Industries products combine precise manufacturing with durable materials, ensuring high performance and consistent protection for all replacement truck parts.
Conclusion
Reliable air dryers are key to preventing corrosion and ensuring long-term pneumatic stability in diesel trucks. With durable construction and OEM-level compatibility, these assemblies and service kits keep your fleet performing efficiently on every route. Order today and keep your fleet running strong.
