Dorman 300-857 Alternator Pulley

Alternator Pulley for Hyundai and Kia

Dorman 300-857 is a serpentine alternator pulley built to match the fit and function of the original pulley on specified applications. It uses quality materials and a black finish for reliable performance and durability in charging system service.

• Serpentine alternator pulley for OE-style replacement
• Black finish with steel contact surface
• Bolt-on attachment type
• Outside diameter: 2.52 in.
• Bore size: 0.57 in.
• Flanged end: No
• Oversized pulley: No
• Undersized pulley: No

Fitment Details

• Fits 2006-2014 Hyundai Sonata, N/A
• Fits 2010-2013 Hyundai Tucson, N/A
• Fits 2010-2013 Kia Forte, N/A
• Fits 2010-2013 Kia Forte Koup, N/A
• Fits 2012-2013 Kia Forte5, N/A
• Fits 2009-2013 Kia Optima, N/A
• Fits 2011-2013 Kia Sportage, N/A
• Fits 2007-2010 Kia Rondo, N/A

What This Part Helps Address

• Alternator pulley wear that can affect charging system operation
• Noise or roughness from a damaged pulley contact surface
• Improper belt tracking caused by a worn OE pulley
• Charging system service on Hyundai Sonata and Kia Optima applications
• Replacement needs for Hyundai Tucson, Kia Forte, and Kia Sportage models

Installation Notes and Tips

Verify pulley dimensions, bore size, and attachment style before installation. This Dorman 300-857 alternator pulley is a bolt-on design and does not include installation hardware. Confirm serpentine belt routing and inspect the alternator and belt condition during service.

Quality Assurance

Dorman engineers this alternator pulley to match original fit and function on listed Hyundai and Kia applications. Part number 300-857 cross-references 3730025201 for the same application.