The 342mm Diameter Harmonic Balancer Assembly is a reliable and durable replacement for your original harmonic balancer. With a black finish and a depth of 42.2mm, this assembly is designed to fit most 1995-2006 American LaFrance, Autocar, Blue Bird, Chevrolet, Crane Carrier, E-ONE, Ford, Freightliner, GMC, Kenworth, Peterbilt, PIERCE, Pierce Mfg. Inc., Roadmaster Rail, Spartan Motors, Sterling, Sterling Truck, Thomas, and Western Star models with Caterpillar engines. It features a rubber vibration damper bonded between ductile steel components, ensuring optimal performance. This harmonic balancer has undergone rigorous testing to guarantee its quality and functionality. Direct OE replacement number: Caterpillar 3389809.