Description
OEM Quality and Reliable Performance
The WABCO 12V SS 1200+ Air Dryer (Part #85143302) is built for long service life and dependable performance in all driving conditions.
This air dryer removes moisture, oil, and other impurities from compressed air systems to prevent brake and valve damage.
With its integrated purge valve and advanced desiccant cartridge, it delivers superior drying efficiency for modern truck applications.
Key Features
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Voltage: 12V
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Model: SS 1200+ Series
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Part Number: 85143302, 400 611 058 0, 4006110620, 432 421 037 0, 432 421 048 0, 432-421-037-0, 4324210480, 6300-4006110620, 650-R955079, 815-4006110580, 8235-R955079NX, 85143302, 955300CX, R955079, R955079NX, R955079X, R955082, S432 421 037 0, S432 421 048 0, S432-421-037-0, S4324210330, S4324210330X, S4324210337, S4324210480, S4324210487, WAB4006110580, WAB4006110620, WN4006110580
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Application: Heavy-duty truck and trailer air systems
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Mounting: Direct-fit OEM replacement
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Includes: Purge valve, heater, and cartridge
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Manufacturer: WABCO (Genuine)
This model offers fast purge recovery, extended cartridge life, and quiet operation compared to standard dryers.
Function and Benefits
An air dryer is essential for keeping compressed air clean and dry. Without it, moisture can freeze in brake lines or damage pneumatic valves.
The WABCO SS 1200+ ensures:
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Consistent removal of moisture and oil
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Longer brake valve and component life
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Improved air pressure stability
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Reduced maintenance costs
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Reliable cold-weather performance
Its 12-volt heater prevents freeze-ups during winter operation, keeping your air system functioning smoothly year-round.
Compatibility
The WABCO 12V SS 1200+ Air Dryer 85143302 fits a wide range of Class 8 trucks and equipment using WABCO-style mounting.
Compatible Applications Include:
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Freightliner Cascadia
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Volvo VNL / VNM
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Peterbilt 579 / 389
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Kenworth T680 / T880
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Mack Anthem / Pinnacle
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International LT / ProStar
Always verify part number 85143302 or cross-reference before ordering.
Installation Notes
Installation is quick and straightforward:
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Depressurize the air system.
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Remove old dryer and disconnect lines.
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Mount the new WABCO 85143302 using OEM fittings.
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Reconnect electrical and air lines.
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Check for leaks and test purge cycle.
No special tools or calibration are needed for replacement.
Why Choose TZ Parts
At TZ Parts, we supply OEM-grade air system components that deliver factory reliability and performance.
Each product is tested for fit, function, and durability before shipment.
We provide fast nationwide shipping and local pickup from our two warehouse locations.
Pickup & Contact Information
📍 Alsip, Illinois Location
TZ Parts – Truck Zone Parts
Address: 5120 W 125th Pl, Alsip, IL 60803
📞 Call: 708-866-2000
💬 Text: 708-910-4096
📧 Email: info@truckzoneparts.com
📍 Fort Myers, Florida Location
TZ Parts – Truck Zone Parts
Address: 17121 Cam Ct, Fort Myers, FL 33967
📞 Call: 239-342-7777
💬 Text: 239-341-7777
📧 Email: info_fl@truckzoneparts.com
Pickup available Monday–Saturday during regular business hours.
Learn More
Visit WABCO’s official site (external, nofollow) for detailed specifications and service guides.
Explore other air dryers and components on TZParts.com.

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