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Part record
6.6L Duramax L5P Thermostat (GM 12680457)
verified
OEM PN12680457
BrandGM
Fitment years as listed in the OEM catalog on 2026-10-24.
Where to buy
Not listed online at Dave's Auto Center yet. Ask Dave's Auto Center about this part, quoting part number 12680457.
Fits (40 configurations)
- 2017 GMC Sierra 2500 HD
- 2017 GMC Sierra 3500 HD
- 2017 Chevrolet Silverado 2500 HD
- 2017 Chevrolet Silverado 3500 HD
- 2018 GMC Sierra 2500 HD
- 2018 GMC Sierra 3500 HD
- 2018 Chevrolet Silverado 2500 HD
- 2018 Chevrolet Silverado 3500 HD
- 2019 GMC Sierra 2500 HD
- 2019 GMC Sierra 3500 HD
- 2019 Chevrolet Silverado 2500 HD
- 2019 Chevrolet Silverado 3500 HD
- 2020 GMC Sierra 2500 HD
- 2020 GMC Sierra 3500 HD
- 2020 Chevrolet Silverado 2500 HD
- 2020 Chevrolet Silverado 3500 HD
- 2021 GMC Sierra 2500 HD
- 2021 GMC Sierra 3500 HD
- 2021 Chevrolet Silverado 2500 HD
- 2021 Chevrolet Silverado 3500 HD
- 2022 GMC Sierra 2500 HD
- 2022 GMC Sierra 3500 HD
- 2022 Chevrolet Silverado 2500 HD
- 2022 Chevrolet Silverado 3500 HD
- 2023 GMC Sierra 2500 HD
- 2023 GMC Sierra 3500 HD
- 2023 Chevrolet Silverado 2500 HD
- 2023 Chevrolet Silverado 3500 HD
- 2024 GMC Sierra 2500 HD
- 2024 GMC Sierra 3500 HD
- 2024 Chevrolet Silverado 2500 HD
- 2024 Chevrolet Silverado 3500 HD
- 2025 GMC Sierra 2500 HD
- 2025 GMC Sierra 3500 HD
- 2025 Chevrolet Silverado 2500 HD
- 2025 Chevrolet Silverado 3500 HD
- 2026 GMC Sierra 2500 HD
- 2026 GMC Sierra 3500 HD
- 2026 Chevrolet Silverado 2500 HD
- 2026 Chevrolet Silverado 3500 HD