Heavy-Duty Truck Air Dryer Desiccant Cartridges

Welcome to the specific destination for the single most important maintenance item in your air brake system: the Desiccant Cartridge.

The cartridge's primary function is to trap and remove moisture, water vapor, and oil aerosols from compressed air before it reaches sensitive components like valves and reservoirs. Failure to replace a saturated or aging cartridge leads directly to corrosion, sluggish brake response, and the high risk of catastrophic system failure when temperatures drop.

Protect Your Uptime: Why Desiccant Replacement is Non-Negotiable

• Prevent Winter Freeze-Ups: A saturated cartridge allows moisture into your air lines, which can freeze solid, leading to brake system failure and costly downtime in sub-zero weather.
• Extend Component Life: A clean, new desiccant charge protects every part of your air system, from the compressor to the smallest valve, saving you thousands in long-term repairs.
• Maintain Peak Performance: Ensure your air brake system is always operating at the optimal pressure and response time the manufacturer intended.

Find the Exact Desiccant Cartridge You Need

We stock a comprehensive selection of replacement desiccant cartridges for the most common heavy-duty air dryers in the industry. Use our filters or cross-reference tool to quickly locate your part by manufacturer or system type:

• Bendix® AD-9 Desiccant Cartridges (PN: 107796 / 107794): The workhorse cartridge for one of the industry's most widely used air dryers.
• Bendix® Coalescing Cartridges (PuraGuard - PN: 5008414PG): Highly recommended for modern trucks and those experiencing oil residue. These remove oil vapor that standard cartridges cannot, maximizing system protection.
• Haldex & WABCO System Saver Replacements (PN: 950011K): Find the spin-on cartridge required for the popular Meritor WABCO System Saver 1200 and other major WABCO systems.

Can't find your part number? Use our Quick Search feature or contact our parts team for expert cross-referencing to OEM numbers from Freightliner, Peterbilt, Kenworth, and more.

Shop our high-quality Desiccant Cartridges now and invest in your truck's most reliable air system defense!