Dorman 419-115 Accessory Drive Belt Tensioner Assembly

Dorman 419-115 Belt Tensioner Assembly

Dorman 419-115 is a replacement accessory drive belt tensioner assembly built to match the fit and function of the original equipment unit on specified vehicles. It is engineered with quality components for durability and has been extensively tested for reliable operation in the serpentine belt system.

Key Features

• Replacement accessory drive belt tensioner assembly for serpentine belt applications
• Designed to match OE fit and function
• Clockwise (CW) tensioner rotation
• Single pulley design with one pulley bearing
• Polyamide 6.6 pulley with 30% glass fiber fill for strength
• Pulley bearing diameter: 40 mm
• Cross-references Continental 49259 and Dayco 89265 for the same application

Detailed Description

This Dorman belt tensioner assembly is built for vehicles that use a serpentine accessory drive belt and need a direct replacement for the factory tensioner. The pulley design, bearing specification, and clockwise rotation are matched to the original equipment layout, helping restore proper belt tension and smooth accessory drive operation. It is a practical replacement choice for Chevrolet S10, GMC Sonoma, and Isuzu Hombre applications covered by the listed fitment.

Use Dorman 419-115 when servicing a worn or noisy tensioner on 1998-2003 Chevrolet S10, 1998-2003 GMC Sonoma, or 1999-2000 Isuzu Hombre. The part number 419-115 is also useful when searching for an OE-style replacement tensioner assembly for these vehicles.

What It Helps Fix

• Squealing or chirping from a worn serpentine belt tensioner
• Loss of proper belt tension from a weak or failing spring mechanism
• Belt tracking issues caused by pulley wear
• Accessory drive noise related to a rough pulley bearing
• Drive belt service concerns on Chevrolet S10, GMC Sonoma, and Isuzu Hombre models

Installation Notes and Tips

Verify belt routing, tensioner rotation, and pulley alignment before installation. Confirm the vehicle application against the listed fitment for 1998-2003 Chevrolet S10, 1998-2003 GMC Sonoma, and 1999-2000 Isuzu Hombre. Inspect the serpentine belt, idler pulleys, and related accessory drive components during service so the new tensioner can operate correctly.

Quality Assurance

Dorman designs this replacement tensioner assembly to match OE fit and function and tests it for dependable performance. The pulley is made from polyamide 6.6 with 30% glass fiber fill, supporting durability in accessory drive service.