Freightliner Evaporator BOA85-436-71-009 (6657 Style) – Century Class O-Ring Kit Increased driver fatigue due to

Increased driver fatigue due to poor cabin vibration isolation

mounts in a standard 2-1/8" dash cutout

Manufacturer National (Timken) Part Number 370001A Part Type Oil-bath wheel seal

Mack 4700/4900/5700 Series

Freightliner 122SD with Behr sleeper evaporator (2003–2023)

Freightliner Evaporator BOA85-436-71-009 (6657 Style) – Century Class O-Ring Kit Increased driver fatigue due toSwap in the 1801066 evaporator on Century Class and get back on the road. This evaporator features an aluminum tube fin core design (style 6657) with slim line refrigerant fittings, commonly used on 2003 model year vehicles with front cab A C units. Signs You Need a New Evaporator Reduced cooling capacity or weak A C airflow Refrigerant leaking from the evaporator housing Musty or moldy odor from cabin air vents Visible corrosion or frost on the core