Magnaflow 5" Pro Series Filter-back Exhaust System For 07.5-18 6.7l Cummins 17874 Magnaflow 5" Pro Series Filter-back Exhaust System For 07.5-18 6.7l Cummins 17874Please Call For Availability. Ships to Continental US Only. The Magnaflow 17874 5" Pro Series Filter-Back Exhaust System provides a custom look and increased exhaust... MSRP: Was: Now: $967.45 Add to Cart The item has been added