Features: 1.Fitment: Replacement for A6 2.8L 2771CC V6 GAS DOHC Naturally Aspirated 1998?2001; Replacement for A6 2.7L 2671CC V6 GAS DOHC Turbocharged 2000?2004, etc. 2.OEM Number: Replacing manufacturer part number for reference is 078121121K. Please double check the part number of your item to ensure perfect fit. 3.Function: With a high level of accuracy and sensitivity, thermostat housing can effectively control the temperature of the engine and improve the safety of your vehicle. 4.Durable Material: Engine coolant thermostat housing is made of ABS materials, wearproof, high temperature resistant, not easy to break. 5.Direct Replacement: Manufactured based on the original factory specifications, cooling thermostat housing is a direct replacement for the old or broken one. Specification: Item Type: Thermostat Housing Material: ABS OEM: 078121121K Fitment: Replacement for A6 2.8L 2771CC V6 GAS DOHC Naturally Aspirated 1998-2001 Replacement for A6 2.7L 2671CC V6 GAS DOHC Turbocharged 2000-2004 Replacement for A6 2.8L 2771CC V6 GAS DOHC Naturally Aspirated 1998-2001 Replacement for A6 2.8L 2771CC V6 GAS SOHC Naturally Aspirated 1998 Note: 1. Please double check the part number of your item, matching information is for reference only. 2. If you are unsure of the item, please contact us before buying to avoid unnecessary return, thanks!