New opened box as is untested The Engine Harmonic Balancer Dorman 594-191 is a high-quality replacement part for car and truck engines. Manufactured by Dorman (OE Solutions), this harmonic balancer helps to reduce engine vibrations and improve overall engine performance. With its durable construction and precise engineering, this product ensures a smooth and efficient operation for your vehicle's engine. Whether you are looking to replace a worn-out harmonic balancer or prevent future issues, the Dorman 594-191 is a reliable choice for your engine needs.