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The Wehrli Custom Fab OEM‑placement coolant tank replaces the stock reservoir on 2017–2019 L5P Duramax 2500/3500 and 2019+ L5D Duramax 4500/5500/6500 models. Fabricated from aluminum with a semi‑gloss black finish, it mounts in the factory location and includes a serviceable float‑type low‑coolant sensor, billet sight glass and anodized aluminum cap to address common sensor failures and improve under‑hood presentation.
Wehrli 17-19 L5P / 2019+ L5D Duramax OEM Placement Coolant Tank Kit - Semi Gloss Black
