SCITOO Air Dryer Cartridge 801266 12-Volt Replacement for AD-IS — Premium Desiccant, Tool-Free Swap

SCITOO 801266 is a 12-volt direct-replacement air dryer cartridge engineered to restore moisture and contaminant protection for AD-IS DC heater-equipped air brake systems.

This replacement air dryer cartridge is designed to be a straightforward, OE-standard solution for heavy-duty trucks and buses using SCITOO AD-IS systems. Built with premium desiccant and durable components, the cartridge removes water and particles from compressed air lines to help maintain braking component life and system reliability. It fits a wide range of popular makes and models from 2007 to present when matched to the correct part number.

How do I know this SCITOO cartridge fits my vehicle?

Compatibility is determined by the part number stamped on your existing air dryer housing or original paperwork. Match your current OE number to one of the listed equivalents to confirm fitment, and check vehicle model years that use AD-IS systems.

• Cross-references: 801266, 5015534, 5010696X, 5015533, 5010694, BX800383, X800383, 745-800383, 5003424, 5004050, 5004050X
• Common fits: Kenworth T680/T880/W900/T800/T600/C500 (2007+)
• Also for: Peterbilt 579/567/389/386/387/388/384/365/367 (2007+)
• International, Freightliner, Western Star, buses/RVs using AD-IS 2007-present

What performance improvements will I see after installation?

Installing a fresh SCITOO cartridge restores the dryer’s ability to trap moisture and particulates, reducing the risk of line corrosion and frozen components in cold weather. That protection helps keep valves, chambers and fittings operating reliably and can cut down on unscheduled maintenance.

• Restores dry, clean compressed air to the system
• Helps prevent freeze-ups and moisture-related failures
• Reduces wear on downstream valves and brake chambers
• Supports consistent air-system performance under heavy duty use

Is swapping the SCITOO 801266 cartridge difficult or do I need special tools?

Replacement is designed to be quick and uncomplicated: you do not need to remove the entire dryer assembly. The cartridge is made for tool-free swap-out in most installations, so you can complete the change in minutes and return the vehicle to service faster.

• Tool-free cartridge removal and insertion in typical setups
• No vehicle disassembly required for standard replacement
• Fast turnaround reduces downtime and service costs
• Follow manufacturer guidance to ensure a proper seal and leak-free connection

How does this SCITOO part meet OE expectations and longevity?

The 801266 cartridge is manufactured to meet strict OE tolerances and uses high-grade desiccant material to ensure stable absorption capacity over time. The robust housing and sealing surfaces are selected to withstand heavy-duty vibration and long service intervals common in commercial fleets.

• Engineered to OE dimensions and performance standards
• Premium desiccant for sustained moisture control
• Durable materials resist deterioration and vibration
• Factory cross-references included for confident replacement

Who is this for: The SCITOO 801266 12V replacement cartridge is made for fleet managers, owner-operators and maintenance technicians who run Kenworth, Peterbilt, International, Freightliner or Western Star trucks and need a reliable, OE-matching air dryer cartridge for AD-IS DC heater systems. If you want a fast, tool-free swap that restores dry compressed air, reduces freeze and corrosion risks, and extends the life of braking components, this cartridge is a practical maintenance item — just confirm the part number before ordering.