Exhaust shroud extension for 2007+ Peterbilt 388 and 389 models. These exhaust shield filler panels are for the rear exhaust. For use with MD4457/MD4457L/MD4457R. Not to be used on 389 models with 36″ sleepers. The exhaust shroud extension features ovals and are sold in pairs.
For ordering information, please visit your local Peterbilt dealership.