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Exhaust Shroud Extension

For 388 and 389 models With Oval Cutouts

Product Information

Exhaust shroud extension for Peterbilt 388 and 389 models 2007+.  These exhaust shield filler panels are for the rear exhaust.  For use with GMX4457/GMX4457L/GMX4457R. 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.

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