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Bendix  |  SKU: D629090

D629090 | Genuine Bendix® AD-9 Air Dryer

$54900
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ConditionNew
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Description:
An Air Dryer D629090 is a component used in heavy-duty vehicles and equipment with air brake systems (trucks, buses, trailers) that removes moisture and contaminants from compressed air before it enters the air system.

Part Number: D629090
Condition: New
Manufacture/Brand: Bendix

Specifications D629090:

Heater Voltage: 12 Volt
Heater Watts: 75 Watt
Supply: 1/2" NPT
Delivery: 1/2" NPT
Control: 1/4" NPT


Fits D629090 For

Freightliner, Mack, International, Volvo/White, Meritor/Rockwell, and similar makes that use Bendix‑style air dryers


Purpose of using D629090:

  • Remove moisture from compressed air

    • Prevents water buildup that can cause corrosion and freezing.

  • Protect air brake system

    • Keeps valves, air lines, and brake chambers working reliably.

  • Prevent air system freezing

    • Especially important in cold weather where moisture can freeze in lines.

  • Filter oil and contaminants

    • Removes compressor oil and debris from the air supply.

  • Extend component life

    • Reduces wear and damage to air system parts.

  • Maintain proper air pressure

    • Helps the system build and hold air pressure efficiently.


Signs of Bad Air Dryer D629090

  • Excess moisture in air tanks

    • Water drains from tanks more than normal

  • Air system freezing

    • Frozen air lines or valves, especially in cold weather

  • Slow air pressure build-up

    • Takes longer than normal to reach operating pressure

  • Frequent or constant purging

    • Dryer purges too often or doesn’t stop purging

  • Air leaks

    • Hissing sounds around the air dryer or purge valve

  • Low air pressure warnings

    • Dashboard air pressure light or buzzer activates

  • Brake performance issues

    • Brakes feel slow to apply or release

  • Oil or debris in air system

    • Contaminants found in air tanks or valves


About the Manufacturer – Bendix:
Bendix is a leading manufacturer of air brake systems, safety technologies, and control components for commercial trucks, buses, and trailers. Known for innovations in braking, stability, and traction control, Bendix supplies OEM and aftermarket parts across North America. It is a subsidiary of Knorr-Bremse, a global leader in braking systems.

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