What it does. Dayco POLY RIB BELT, DAYCO Dayco 311-4PK888EE drives engine accessories such as the alternator, water pump and air-conditioning compressor.

Fitment. Catalogued as fitting 2021–2026 GMC Yukon Xl, 2019–2025 GMC Yukon, 2019–2025 Chevrolet Silverado 1500, 2019–2025 Chevrolet Tahoe, 2020–2025 Cadillac Escalade, 2019–2025 GMC Savana 3500, 2020–2025 Chevrolet Silverado 3500 Hd, 2019–2025 GMC Sierra 1500, 2021–2025 GMC Sierra 2500 Hd, 2025 Chevrolet Lcf 3500hg, 2019–2025 Chevrolet Express 3500, 2020–2024 Chevrolet Silverado 2500 Hd, 2019–2024 GMC Savana 2500, 2020–2023 GMC Sierra 3500 Hd, 2019–2023 Cadillac Escalade Esv, 2019–2022 GMC Sierra 1500 Limited, 2020–2022 Chevrolet Lcf 3500, 2021 Chevrolet Express 2500, 2020–2021 Chevrolet Suburban. Engine, sub-model and trim can narrow fitment further, so check those attributes on the listing before ordering.