Duramax L5P Belt Tensioner 2017-2025 GM 12673657

GM serpentine belt tensioner 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 tensioner keeps the serpentine belt loaded across every accessory. A weak spring or seized pulley squeals, throws the belt and lets the alternator undercharge. A new tensioner restores steady belt tension.

Fits

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

Fixes

• belt squeal or chirp
• a tensioner arm bouncing at idle
• a rough or noisy tensioner pulley bearing

What's included

• the tensioner assembly with pulley

Specifications

• Brand: GM
• Part number: 12673657
• Shipping weight: 2.5 lb
• Condition: new
• Product type: Belt Tensioner

Cross-reference

Replaces or interchanges with GM 12673657 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.