Precision Manufacturing & Quality Assurance
The Turbo Kings AD-IS 1-Plug Air Dryer (5004050) is newly manufactured in-house and engineered to deliver OEM-level air-system protection. Designed as a direct replacement for the Bendix AD-IS, this unit is pressure-tested up to 150 PSI to ensure complete air-tight integrity, purge reliability, and governor response under real-world operating conditions.
Each air dryer is built using BRV high-temperature O-rings, providing superior sealing and extended service life even under continuous heat cycles. Internal components are lubricated with HP-870 high-temperature synthetic grease to ensure smooth valve actuation and resistance to carbon buildup. A genuine Bendix D-2 governor is installed and calibrated to maintain precise cut-in and cut-out control within the 135–150 PSI range.
Every assembly is purged, neutralized, and moisture-free prior to final sealing—ensuring maximum protection for your vehicle’s air suspension, braking, and emission-related systems.
What Makes Turbo Kings Air Dryers Different
Turbo Kings does not rely on generic imports or outsourced assemblies. Each AD-IS 1-Plug dryer is built and verified in-house using OEM-grade procedures and validated through rigorous pressure testing. The result is a product that performs consistently from the first mile to the last.
BRV High-Temp O-Rings — Withstands prolonged thermal cycling without degradation
HP-870 Grease Application — High-temp synthetic lubricant ensures reliable valve movement
OEM Bendix D-2 Governor — Calibrated for accurate 135–150 PSI regulation
Full Pressure Test to 150 PSI — Confirms purge-valve and air-integrity performance
Neutralized, Purged, and Moisture-Free Assembly — Prevents corrosion and freeze-up
Built by Turbo Kings — Manufactured locally for traceable quality and uniform standards
Why Fleets and Owner-Operators Trust Turbo Kings
A properly functioning air dryer is essential to protect the truck’s pneumatic systems from oil carry-over, condensation, and internal corrosion. Turbo Kings builds every unit to exceed OEM expectations—eliminating premature valve wear, frozen lines, and purge malfunctions that lead to downtime.
Fleets rely on the 5004050 AD-IS because it arrives ready for installation, pre-lubed, pressure-verified, and sealed. Our hands-on manufacturing approach combines precision engineering with rigorous validation, ensuring performance that lasts.
Our Process at a Glance
Housing Prep & Inspection: Cleaned, dried, and dimension-checked for machining accuracy.
Seal Replacement: BRV high-temp O-rings installed throughout.
Lubrication: HP-870 grease applied to all internal moving parts.
Governor Installation: OEM Bendix D-2 governor fitted and calibrated.
Pressure Testing: 135–150 PSI air-integrity verification.
Final Assembly: Purged, capped, and serialized for traceability.
Specifications
Operating Pressure: 135 – 150 PSI
Voltage: 12 V
Configuration: 1-Plug Port Layout
Part Number: 5004050
Core Charge: None (New Unit)
Warranty: 6 Months / Unlimited Mileage
 is newly manufactured in-house and engineered to deliver OEM-level air-system protection. Designed as a direct replacement for the Bendix AD-IS, this unit is pressure-tested up to 150 PSI to ensure complete air-tight integrity, purge reliability, and governor response under real-world operating conditions. […]){kind=link}