GMB 448-1050 Engine Timing Belt Idler - Left

Engine Timing Belt Idler for Asian Applications

The GMB 448-1050 engine timing belt idler is built for vehicles that require a precise belt path and stable pulley operation. Manufactured to meet or exceed OEM specifications, it is a direct-fit replacement for a wide range of Kia, Hyundai, Mitsubishi, Chrysler, Dodge, and Plymouth applications.

Use this timing belt idler when servicing the engine timing system on models such as the Hyundai Sonata, Mitsubishi Eclipse, and Kia Optima. The 448-1050 is a metal pulley design with a single groove and a serpentine & V-belt profile for application-specific fitment.

Key Features

• Engine timing belt idler for valve train service
• Manufactured to meet or exceed OEM specifications
• Metal pulley construction for durability
• Single-groove pulley design
• Serpentine & V-belt pulley type
• Direct replacement for multiple Asian vehicle platforms

Fitment and Cross References

Compatible with 2001-2006 Kia Magentis, left; 2001-2006 Kia Optima, left; 2003-2006 Mitsubishi Lancer, left; 2001-2005 Chrysler Sebring, N/A; 2001-2005 Dodge Stratus, left; 2001-2005 Hyundai Santa Fe, left; 1992-2005 Hyundai Sonata, left; 1990-2005 Mitsubishi Eclipse, left; 1989-2003 Mitsubishi Galant, left; 2003 Mitsubishi Outlander, left; 1997-1999 Mitsubishi Montero Sport, left; 1992-1995 Hyundai Elantra, left; 1993-1995 Mitsubishi Expo, left; 1993-1994 Mitsubishi Expo LRV, left; 1990-1994 Plymouth Laser, left; 1991-1992 Mitsubishi Mirage, left; 1989 Mitsubishi Mirage, left; 1989-1990 Dodge Colt, N/A.

This part cross-references Gates T42017 and Dorman - Conduct-Tite 85274 for the same application. Part number 448-1050 is also referenced as 4481050 and 2481033021.

What It Helps Address

• Timing belt pulley noise from a worn idler
• Belt tracking issues caused by pulley wear
• Uneven belt movement in the engine timing system
• Service replacement for aging OEM idler components
• Maintenance on vehicles with left-side timing belt idler applications

Installation Notes and Quality Assurance

Verify engine code, belt routing, and pulley position before installation. Confirm the vehicle application against the fitment list for your Kia Optima, Hyundai Sonata, or Mitsubishi Eclipse, since timing components must match the exact engine setup. Inspect the belt, tensioner, and adjacent pulleys during service to ensure the full timing system is in proper condition.

GMB manufactures this part to meet or exceed OEM specifications for consistent fit and function. The 448-1050 is intended as a replacement timing belt idler for the listed applications.