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A04-31549-001 Freightliner Stainless Steel Exhaust Pipe Diffuser DAL:
$765.00
A04-31549-001 for Freightliner ChassisMessage us for any questions -This diffusion assembly for ISX15 is made from stainless steel, combining corrosion resistance with structural rigidity to withstand the hot and corrosive exhaust environment. The component is designed to diffuse exhaust flow in a way that smooths out pulsations and reduces noise without introducing significant backpressure. Its dimensions emphasize a balanced transition between inlet and outlet diameters to optimize gas dynamics and maintain consistent engine performance across RPM ranges. Stainless construction lends excellent durability in the presence of moisture and salt exposure, which is important for long-term reliability in fleet use. The diffuser’s design also helps reduce vibrations that can propagate through the exhaust system, contributing to a calmer underhood environment. When installed correctly, the part supports improved thermal management of aftertreatment components and overall engine efficiency. Source One Parts Center can assist with compatibility checks and installation best practices.