Product Details: Get your semi truck ready for the long haul with seamless exhaust connections, with the OTR 4" x 10' Straight Aluminized Exhaust Stack Pipe with Expertise Built In™. This replacement stack works to transport exhaust gases away from an engine and into the atmosphere where it is quickly dispersed. Engineered with a durable metallic body to be suitable for outputs from diesel engines. FleetPride is your First Click in Heavy Duty®.