About this part
What it does. Dayco POLY RIB BELT, DAYCO Dayco 311-5040440 drives engine accessories such as the alternator, water pump and air-conditioning compressor.
Symptoms that point to this part
- Squealing on cold start
- Visible cracking or glazing
- Accessories losing power
Fitment. Catalogued as fitting 2021–2026 Audi Q7, 2020–2025 Audi Sq5, 2021–2025 Audi A8 Quattro, 2019–2024 Audi S5 Sportback, 2019–2024 Audi S4, 2020–2024 Audi A6 Quattro, 2021–2023 Audi Sq5 Sportback, 2020–2023 Audi S5, 2019–2023 Audi Q8, 2020–2023 Audi A7 Sportback, 2021 Audi A6 Allroad. Engine, sub-model and trim can narrow fitment further, so check those attributes on the listing before ordering.
Fits these vehicles
- 2026 Audi Q7
- 2025 Audi Sq5
- 2025 Audi Q7
- 2025 Audi A8 Quattro
- 2024 Audi S5 Sportback
- 2024 Audi Q7
- 2024 Audi S4
- 2024 Audi A6 Quattro
- 2024 Audi Sq5
- 2023 Audi S5 Sportback
- 2023 Audi Sq5 Sportback
- 2023 Audi A8 Quattro
- 2023 Audi S4
- 2023 Audi S5
- 2023 Audi Q8
- 2023 Audi A6 Quattro
- 2023 Audi Q7
- 2023 Audi A7 Sportback
- 2022 Audi Q7
- 2022 Audi A8 Quattro
- 2022 Audi A6 Quattro
- 2022 Audi Sq5
- 2022 Audi S5
- 2021 Audi S5 Sportback
- 2021 Audi Q7
- 2021 Audi A6 Allroad
- 2021 Audi Sq5 Sportback
- 2021 Audi Sq5
- 2021 Audi A6 Quattro
- 2021 Audi A8 Quattro
- 2021 Audi A7 Sportback
- 2020 Audi Q8
- 2020 Audi A6 Quattro
- 2020 Audi S5
- 2020 Audi A7 Sportback
- 2020 Audi S4
- 2020 Audi Sq5
- 2020 Audi S5 Sportback
- 2019 Audi S4
- 2019 Audi S5 Sportback
- 2019 Audi Q8