Part number: 170101
UPC: 601961387867
OEM: 21428534

Exhaust Bellow Flex Pipe For Volvo/Mack Replace 21428534 21959393 22307701

This is a heavy-duty stainless steel exhaust bellow flex pipe featuring a 4-inch inlet transitioning to 5-inch outlet design with 17.7-inch overall length, specifically engineered for Volvo/Mack truck applications. The braided construction provides superior flexibility and durability while accommodating thermal expansion and engine vibrations in pre-treatment exhaust systems.

4 in stock

Construction	Multi-layer stainless steel braided flexible bellows with interlocking design providing maximum flexibility while maintaining structural integrity under high temperature and vibration conditions.
Material	321 stainless steel construction with double-wall corrugated design capable of withstanding temperatures up to 1200°F (649°C) and pressures up to 150 PSI.
Engineering	Designed with expansion joints to absorb thermal expansion, engine vibrations, and movement while preventing exhaust leaks and maintaining optimal back pressure.
Application	Compatible with Volvo D13, Mack MP7/MP8, and Cummins ISX 15.0 engines in VNL 670 Gen 2, Pinnacle, and similar heavy-duty truck applications from 2003-2019 model years.