Duramax L5P Water Pump 2017-2025 GM 12680257 / 251-817

GM engine water pump for the Duramax L5P (2017-2025). Listed for one application: Duramax L5P engines, 2017-2025, in Chevrolet, GMC applications. Confirm your engine code and year against this listing before ordering.

What it does

The water pump circulates coolant through the block, heads and radiator. A weeping seal, a failing bearing or an eroded impeller means overheating on the next hot day. A new pump with a fresh gasket restores full coolant flow.

Fits

• Chevrolet vehicles with the Duramax L5P engine, 2017-2025
• GMC vehicles with the Duramax L5P engine, 2017-2025

Fixes

• coolant weep from the pump weep hole
• bearing growl or a wobbling pulley
• overheating at idle or under load
• a timing or belt job where the pump is off anyway

What's included

• the water pump assembly
• gasket or O-ring where supplied

Specifications

• Brand: GM
• Part number: 12680257 / 251-817
• Shipping weight: 9.8 lb
• Condition: new
• Product type: Water Pump

Cross-reference

Replaces or interchanges with GM 12680257 / 251-817 for the Duramax L5P. Check the part number stamped on your original before ordering.

Free shipping on orders of $70 or more; everything else ships with calculated shipping at the part's real weight. Questions on fitment? Ask a tech before you buy.