About this part
What it does. Dayco POLY RIB BELT, DAYCO Dayco 311-5070807 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 2020–2023 Nissan Frontier, 2021–2022 Mercedes-Benz Sprinter 2500, 2020–2022 Mercedes-Benz Sprinter 3500, 2019–2020 Mercedes-Benz Sprinter 3500xd. Engine, sub-model and trim can narrow fitment further, so check those attributes on the listing before ordering.