Enhance your truck’s air braking performance with 12V heavy-duty, oil coalescing air dryer (SS1200UP) which is a premium replacement part for OEM R955082. This air dryer is designed with integrated advanced oil coalescing technology and a powerful heating system, to maintain your truck’s air braking system by keeping it clean and dry and preventing it from oil, water, freezing temperatures and other contaminants.Advanced Oil Coalescing Cartridge: This Freightliner air dryer comes with an oil coalescing technology to effectively remove oil, moisture and other contaminants from the air braking system making it function smoothly and efficiently even in the harshest hauling conditions.Efficient Heating System: Our SS1200UP air dryer features a 12V DC, 100W heater to ensure optimal operation of your truck’s air braking system even in the coldest weather conditions. This mechanism prevents moisture from freezing for optimal air braking performance.Heavy Duty Design: This air dryer for mack trucks is built for heavy-duty applications as it is made from high quality materials including dark gray anodized aluminum castings for corrosion resistance ensuring its longlasting and reliable performance.Easy Installation & Maintenance: This SS1200UP air dryer is made specifically for easier installation and maintenance which also reduces the downtime and ensures that your truck’s air braking system performs smoothly even in the harshest hauling conditions.Replacement & Compatibility List: Checkout the complete list below:-Compatible with Other Brands & Their OEM Part Numbers:-Fits Freightliner OEM: TDA R955082Fits Meritor OEM: R955082, S32-421-033-7, S432-421-033-0, S432-421-033-0X, S432-421-033-7, S4324210337, S4324210330X, S4324210330, 8235-R955082, WAB4324210330, TDAR955082, WAB4324210337, WABS4324210337, 4324210330Fits Wabco OEM: 4324210030, 4324210337, 432421032R, 4324210330Installation & Maintenance GuideInstallation:First, you must remove the current air dryer by detaching the air lines and electrical cables and unscrewing the mounting bolts keeping the air dryer in place.After removing the existing air dryer, you should position the new replacement unit of air dryer assembly in the existing place using the existing mounting holes.When the unit is finally placed correctly, you must now secure the unit with the mounting bolts, by tightening them perfectly.After the air dryer assembly is completely tightened and implemented in its position, you can now effectively connect all the airlines and electrical cords, ensuring leakproof connectivity. Also, you can use the thread sealant or Teflon tape if required. Trouble Shooting & MaintenanceThe air dryer’s function is to collect and remove moisture and contaminants in solid, liquid, and vapor form, offering dry air for the air brake system. However, this replacement part also needs regular maintenance to increase its functioning performance and lifespan.You should inspect the air dryer assembly regularly for any signs of damage, corrosion, or leaks.Simply, Replace the desiccant cartridge periodically as per the manufacturer’s instructions or when the system shows indications of reduced performance. This may involve draining the air tank and replacing the desiccant media within the cartridge.When you are not sure about any further step during the installation or maintenance process, simply consult a qualified mechanic or refer to the repair manual for your specific truck model.18-month Warranty - This product is covered for one year or completion of 100,000 miles since installation or 18 months after your purchase, whichever comes first.