GMB 448-8900 Engine Timing Belt Tensioner

Brand GMB 448-8900
Drive Belt Pulley Diameter (1) (mm) 1
Pulley / Belt Type Serpentine & v-belt
Pulley Groove Quantity (1) 1
Pulley Material (1) Metal
Fits Dodge, Mitsubishi, and Plymouth · 16 vehicles

OE-spec construction. Manufactured to meet or exceed OEM specifications.

Metal pulley. Built with a durable metal pulley for dependable belt control.

Serpentine and V-belt. Compatible with both belt types for versatile use.

Cross-references ACI 84023, Gates T41056 and 4488900 for the same application. See all 4.

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Engine Timing Belt Tensioner for Mitsubishi and Dodge

GMB 448-8900 is an engine timing belt tensioner built to meet or exceed OEM specifications. It is a direct-fit replacement for select Mitsubishi, Plymouth, and Dodge applications, including Eclipse, Laser, Colt, and Mirage models.

Key Features

  • Engine timing belt tensioner for valve train service
  • Manufactured to meet or exceed OEM specifications
  • Metal pulley construction for durability
  • Serpentine and V-belt pulley type
  • 1 mm drive belt pulley diameter and 1-groove design
  • Cross-references Gates T41056 and ACI 84023 for the same application

Detailed Description

This GMB timing belt tensioner, part number 448-8900, is designed for engine timing belt service on select 1987-1994 Mitsubishi Eclipse, 1990-1994 Plymouth Laser, 1988-1990 Dodge Colt, and 1987-1988 Mitsubishi Mirage applications. It is built with a metal pulley and OE-style specifications to support proper belt tension in the engine timing system. If you are replacing a worn timing belt tensioner on a Mitsubishi Eclipse or Plymouth Laser, 448-8900 provides a direct replacement option for the listed vehicles.

Compatible With 1990-1994 Mitsubishi Eclipse, 1990-1994 Plymouth Laser, 1988-1990 Dodge Colt, and 1987-1988 Mitsubishi Mirage applications. Part number 448-8900 is also referenced by MD109958 and Gates T41056 for the same fitment family.

What It Helps Address

  • Timing belt slack or inconsistent belt tension
  • Noise from a worn or rough tensioner pulley
  • Premature timing belt wear from improper alignment
  • Service replacement for aging engine timing components
  • Restoration of correct belt tracking in the valve train system

Installation Notes and Tips

Verify engine code and timing component layout before installation, since fitment is limited to the listed model years and applications. Inspect the timing belt, pulleys, and related engine components during service, and replace any worn parts at the same time to maintain proper belt operation. Follow the vehicle service manual for timing marks, torque values, and belt tension procedures.

Quality Assurance

GMB manufactures this part to meet or exceed OEM specifications, supporting consistent fit and function for the listed applications. Part number 448-8900 is intended for direct replacement use on the specified Mitsubishi, Plymouth, and Dodge models.

This part fits 16 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
1994MitsubishiEclipse1.8LL4N/A
1994PlymouthLaser1.8LL4N/A
1993MitsubishiEclipse1.8LL4N/A
1993PlymouthLaser1.8LL4N/A
1992MitsubishiEclipse1.8LL4N/A
1992PlymouthLaser1.8LL4N/A
1991MitsubishiEclipse1.8LL4N/A
1991PlymouthLaser1.8LL4N/A
1990DodgeColt1.8LL4N/A
1990MitsubishiEclipse1.8LL4N/A
1990PlymouthLaser1.8LL4N/A
1989DodgeColt1.8LL4N/A
1988DodgeColt1.6LL4N/A
1988MitsubishiMirage1.6LL4N/A
1987DodgeColt1.6LL4N/AFrom 01/1987
1987MitsubishiMirage1.6LL4N/AFrom 01/1987
Directly replaces or cross-references 4 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
ACI — 84023Gates — T410564488900MD109958