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AD4001 – TRP Air Dryer Assembly
The TRP AD4001 is a premium aftermarket replacement for Bendix AD-IS air dryer assemblies. Designed for Class 8 trucks, this dryer removes moisture and contaminants from the air brake system to protect valves, lines, and reservoirs. Built with heavy-duty construction and designed for fleet use, it delivers reliable long-term service.
Verified Cross References (Direct Replacements):
Specs (from manufacturer data):
Cartridge Part No.: AC1001
Cut-Out Pressure: 130 PSI
Max PSI: 153 PSI
Delivery Ports: 1/4-18 NPT
Supply Port: 1/2-14 NPT
Operating Temp: -40 °F to 160 °F
VMRS Code: 013-010-052 (Air Filter & Dryer Assembly with Drain & Check Valves)
6. Why Choose This Part
✅ Crosses to Bendix AD-IS – trusted OEM design
✅ Premium aftermarket alternative backed by TRP
✅ Durable construction – built for heavy-duty Class 8 trucks
✅ Cartridge AC1001 included for easy maintenance
✅ Leak & pressure tested for fleet reliability
7. Specs TableSpecDetailPart NumberAD4001BrandTRP (Premium Aftermarket)Equivalent OEM NumbersBendix 801266 / 5010848 / 801147, Automann 170.4001, Alliance ABP N42AD4001, FleetPride AD4001, Dayton 934-4001Cartridge IncludedAC1001Cut-Out Pressure130 PSIMax Pressure153 PSIPortsDelivery 1/4-18 NPT, Supply 1/2-14 NPTOperating Temp-40 °F to 160 °FVMRS Code013-010-052ApplicationClass 8 truck & trailer air brake systemsWarrantyHandled through TRP / distributorSeller Warranty❌ Seller does not handle warranty claimsShipping Weight~20 lbsEstimated Package Size18 x 10 x 10 in8. Fitment Details
Common Applications:
Class 8 trucks using Bendix AD-IS style air dryer assemblies
Cross-compatible with Bendix 801266 / 5010848 / 801147
Direct TRP aftermarket replacement with AC1001 cartridge
9. Fitment Note
ATTENTION!
If you\'re not sure about the part number you need, we\'re here to help.
To ensure you receive the correct part, please provide:
Year
Make
Model
Last 8 digits of the VIN – OR – Engine Serial Number (ESN)
We’ll confirm compatibility quickly and accurately.
10. Condition
Brand new and unused.
Items may be packed in TRP packaging or repackaged for shipping.
11. Shipping & Support
Fast shipping – ships within 1 business day
Carefully packed for protection
30-day free returns on unused parts
Questions? Message us anytime — we respond quickly!
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