Description
World American WA801266 AD-IS Integrated Solution air dryer for Kenworth, Peterbilt, and Class 8 trucks running Bendix-style charging systems. Replaces Bendix 801266 / 5010696X and PACCAR K049199; meets the AD-IS spec for integrated governor, primary/secondary pressure protection, accessory ports, purge valve, and a 12V 90-watt heater in a single housing. The 3-accessory-port configuration is the PACCAR-style WA801266 that mounts directly to a separate purge reservoir tank (not included).
Signs You Need a New Air Dryer
- Excessive water or oil draining from the wet tank or service reservoirs
- Air dryer rapid-cycling on and off (continuous purge) during normal operation
- System slow to build, won’t reach governor cut-out, or cuts out below 120 PSI
- Audible air leak from the purge valve when parked at full pressure
- Frozen air lines or stuck brake valves in cold weather
- Safety relief valve blowing air at or below normal cut-out pressure
- Premature failure of brake valves or compressor due to oil/water contamination
Specifications
| Manufacturer | World American (Midwest Truck & Auto Parts) |
|---|---|
| Part Number | WA801266 |
| Part Type | AD-IS Air Dryer Assembly |
| Style | AD-IS (Integrated Solution) with Extended Purge |
| Voltage | 12V DC |
| Heater Wattage | 90 W |
| Heater Connector | Metri-Pack 280 Series |
| Supply Port | 1/2-14 NPT |
| Governor Unloader Port | 1/8-27 NPT |
| Primary Delivery Port | 1/4-18 NPT |
| Secondary Delivery Port | 1/4-18 NPT |
| Accessory Ports | 3 x 1/4-18 NPT |
| Primary Port Opening Pressure | 103 PSI |
| Secondary Port Opening Pressure | 109 PSI |
| Accessory Port Opening Pressure | 109 PSI |
| Safety Valve Opening Pressure | 153 PSI |
| Mounting | Stand-alone, mounts to purge reservoir (not included) |
Cross References
This part replaces or is equivalent to the following part numbers:
- Bendix: 801266, 801266BXW, 5010694, 5010695, 5010696, 5010696X, 5010696BXR, 5015533, 5015534
- Kenworth / Peterbilt (PACCAR): K049199, K049199BXW
- Haldex: 5010696, 5010696X
- Meritor: R9555004050X, R9555010696, R9555004050
- Automann: 170.801266
- S&S / Newstar: S-26293
Applications
This AD-IS air dryer fits Class 8 trucks equipped with Bendix AD-IS air brake charging systems, including:
- 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 Bendix AD-IS systems (2007-present)
Note: Purge reservoir tank is not included and must be reused from the existing installation or purchased separately. Cartridge replacement interval is typically 1-3 years or 100,000-300,000 miles depending on application severity.
Verify your existing air dryer configuration and port layout before ordering. The 801266 is the 3-accessory-port (PACCAR-style) configuration; other AD-IS variants with different port counts will not interchange directly.
