Dorman 674-6017 Exhaust Flex Bellows Kit 3.5in Inlet Clamp-On Steel

The Dorman 674-6017 Flex Bellows Kit is a heavy-duty exhaust pipe bellow — also commonly referred to as a flex pipe — engineered as a direct OE replacement for commercial truck applications. Constructed from durable steel, this clamp-on bellows kit features a 3.5-inch inlet diameter and 13.75-inch overall length, making it a precise fit for specified Freightliner and International truck models.

Key Features:

• Direct-fit OE replacement exhaust bellow / flex pipe for commercial trucks
• Absorbs engine displacements, vibrations, and thermal expansion caused by extreme exhaust temperatures
• Creates a critical flex point between the engine and after-treatment emissions equipment
• Helps prevent exhaust leaks and associated loss of engine power
• Steel construction for reliable, long-lasting service life
• Clamp-on design for straightforward installation
• Includes all hardware required for a complete replacement
• Undergone vehicle fitment and material testing to ensure proper fit and performance

The Dorman 674-6017 is part of Dorman's HD Solutions line of heavy-duty commercial truck exhaust components. With a 3.5 in. inlet and 13.75 in. length, this exhaust bellows kit ships complete with installation hardware so technicians can complete the repair efficiently without sourcing additional components. Manufacturer Part Number: 674-6017. UPC: 889245041319.