Part Type: LDU Rotor Coolant Delete Cap. · For Tesla Model S/X 2012-2021. For 2012-2021 Tesla Model S. For 2015-2021 Tesla Model X. · 2Pcs large drive unit coolant delete cap for rotor leak fix. · By deleting the rotor cooling path, simplify the overly complicated rotor coolant plumbing on the large drive unit.