Rear Exhaust Pipe Assembly for Mack Trucks, part number 25158573, also cataloged as 4ME4993M2. This replacement rear exhaust pipe is identified by Mack Trucks as the 25158573/4ME4993M2 part and is used to replace a damaged or worn rear exhaust pipe in Mack truck applications. It defines the rear segment of the exhaust system, directing exhaust flow from the engine area toward the tail and out of the vehicle.
