Hyundai Accent GL 2013 Automatic Gear oil filter, original synthetic. This product is an original automatic transmission (gear) oil filter from Hyundai or Kia. It carries part number 46321-23001 or similar compatible numbers for models such as Hyundai Elantra, Accent, and Kia Rio. The filter works to clean the gear oil from impurities and deposits resulting from friction, which helps to extend the life of the transmission and improve its performance.