SCITOO Air Dryer Cartridge 801266 12V Direct Replacement for AD-IS DC Heater — OE Fit, Tool-Free Swap

SCITOO 801266 is a 12-volt direct-replacement air dryer cartridge built to restore dry, contaminant-free air to AD-IS DC heater-equipped heavy trucks and buses.

This replacement air dryer cartridge has been engineered to OE-level standards to fit AD-IS systems across many heavy-duty makes and models from 2007 to present. It uses high-grade desiccant and rugged components to remove moisture and contaminants from compressed air systems, helping protect brake chambers, valves, and lines. The cartridge is designed for quick, tool-free swapping so drivers and fleet technicians can perform service quickly and return vehicles to operation with minimal downtime.

Which vehicles and systems is this SCITOO cartridge compatible with?

This cartridge is made for AD-IS DC heater air dryer assemblies installed on a wide range of trucks and buses. Compatibility covers multiple Kenworth, Peterbilt, International, Freightliner, and Western Star models produced since 2007 that use AD-IS equipment.

• Kenworth: T680, T880, W900, T800, T600, C500 (2007–present)
• Peterbilt: 579, 567, 389, 386, 387, 388, 384, 365, 367 (2007–present)
• International: LT, LoneStar, ProStar, 9900i (with AD-IS systems)
• Also fits many Freightliner, Western Star, bus, RV, and other heavy-duty vehicles using AD-IS (2007–present)

How does this cartridge protect the air brake system?

The cartridge removes moisture and particulate contamination from compressed air before it reaches braking components. By providing drier, cleaner air, it reduces the risk of corrosion, erosion, and freeze-related malfunctions and extends the service life of valves, reservoirs, and chambers.

• High-grade desiccant absorbs moisture to prevent condensation and freezing.
• Robust construction limits particulate migration into sensitive components.
• Maintains consistent air quality under heavy-duty operating conditions.

Can I install this SCITOO air dryer cartridge myself, and how long does it take?

Yes. The SCITOO cartridge is designed for straightforward, tool-free replacement—no full removal of the dryer assembly is required. Most technicians or experienced drivers can complete the swap in minutes, getting the vehicle back on the road quickly.

• Tool-free cartridge swap—no disassembly of the entire dryer needed.
• Quick service reduces vehicle downtime and fleet maintenance costs.
• Clear part numbers and fitment notes help confirm correct selection before purchase.

What OE numbers and quality standards should I compare before ordering?

This SCITOO cartridge follows OEM specifications and replaces several common factory part numbers. Verifying the part number on your original dryer against the listed numbers ensures you receive the correct cartridge for your AD-IS DC heater assembly.

• Replaces OE numbers such as 801266, 5015534, 5010696X, BX800383, and others.
• Manufactured to strict OE-quality criteria for reliability and fit.
• Product images and descriptions display reference numbers—confirm before buying.

Who is this for: Fleet managers, owner-operators, and maintenance technicians who need a reliable, OE-spec replacement for AD-IS DC heater air dryer cartridges. If you operate heavy trucks or buses from Kenworth, Peterbilt, International, Freightliner, or Western Star (2007 and later) and want a durable desiccant cartridge that’s quick to install and restores proper air quality, this SCITOO 801266 replacement cartridge is engineered for your service needs. Always verify the original part number on your dryer to confirm compatibility before installation.