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The Wehrli fabricated aluminum coolant tank replaces the OEM reservoir for 2017–2019 Duramax L5P 2500/3500 and 2019+ L5D 4500/5500/6500 applications, mounting in the stock location. It addresses known OEM issues like cloudy reservoirs and non-serviceable sensors by providing a serviceable float-type sensor and improving under-hood appearance. The kit includes a billet aluminum sight glass, black anodized cap, powder-coat finish, installation hardware and overflow hose, is made in the USA, and replaces multiple GM part numbers.
Wehrli 17-19 Duramax L5P Coolant Tank OEM Placement Sparkle Granny Smith
