Dorman 300-869 Alternator Decoupler Pulley Serpentine Belt-On Steel Black

The Dorman 300-869 is a direct-replacement alternator decoupler pulley engineered to match the fit and function of the original equipment pulley. Also referred to as an alternator clutch pulley, the decoupler pulley isolates torsional vibration and shock loads from the serpentine belt drive system, reducing stress on the belt and connected accessories.

Key Features:

• Direct-fit replacement — designed to match OE specifications for a hassle-free installation
• Serpentine belt compatible — stock-style groove profile works with the factory serpentine belt
• Steel construction with black finish — built for reliable performance and long service life
• Bolt-on design — no special tools or modifications required
• Addresses OE vulnerabilities — improved to resist heat and dust that cause clutch and bearing failure
• Restores alternator performance — eliminates belt noise and prevents premature wear on the belt and belt-driven accessories
• Sold individually

Replacing only the decoupler pulley — rather than the entire alternator assembly — saves significant time and labor cost. The Dorman 300-869 is backed by Dorman's extensive aftermarket engineering expertise and over a century of automotive parts experience.