Oil Cooler kit - HKS - GR YarisHKS Oil Cooler kit for GR Yaris When track driving with the GR Yaris oil temperatures rise rapidly! HKS has developed a Turn Flow Type oil cooler that provides the oil temperature management required for continuous track driving. This provides competent oil management and continuous sustained performance. Authentic tests using real vehicles prove the high standards of HKS product, check out the pics for real data! Concept features: Provides a cooling