GM Engine Oil Cooler 2020-2023 GM 6.6L Duramax L5P 12706188 GM Engine Oil Cooler 2020-2023 GM 6.6L Duramax L5P 12706188 For 2020, 2021, 2022, 2023 GM 6.6L Duramax L5P Replaces# 12701592 MSRP: Was: Now: $489.95 Out of stock. Please Call For Availability