BorgWarner recently launched its new silent chain for the balance shaft drive on Hyundai's Theta II four-cylinder gas direct-injection (GDI) and turbo-GDI engines. These engines power the Hyundai Sonata and Kia Sorento, K5 and Sportage for the U.S. and South Korea. Designed to withstand the harsh environment and stresses of GDI engines, the new silent chain delivers lower noise, vibration and harshness (NVH) and greater durability compared with roller chain systems for balance drive applications.
