Dorman 420-154 Engine Timing Belt Tensioner

Engine Timing Belt Tensioner for Chrysler and Dodge

Dorman 420-154 is an OE FIX engine timing belt tensioner built for select Chrysler and Dodge applications. It replaces the original plastic pulley with a metal pulley and uses a larger bearing assembly for improved durability and slower bearing speed.

Compatible With Chrysler 300, Sebring, Town & Country, Pacifica, 300M, Concorde, and Intrepid, plus Dodge Nitro, Avenger, Challenger, Charger, Grand Caravan, Journey, Magnum, and Intrepid applications.

Key Features

• Metal pulley construction replaces the brittle plastic OEM pulley
• Larger bearing surface area for extended service life
• Automatic mechanical tensioner design
• Cast iron contact surface material
• OE-style standard replacement for timing belt service
• Direct-fit application coverage for select Chrysler and Dodge vehicles

Detailed Description

This Dorman 420-154 timing belt tensioner is engineered as an OE FIX replacement for vehicles where the original plastic pulley can crack over time. By changing the pulley material to metal and increasing bearing size, the assembly addresses a common failure point while maintaining the original application layout. It is a practical replacement for timing belt service on Chrysler 300, Chrysler Sebring, Dodge Charger, and related models listed in the fitment data.

This part cross-references Gates T43197 for the same application.

What It Helps Address

• Cracked or brittle timing belt tensioner pulley
• Noisy or rough tensioner bearing operation
• Timing belt tensioner wear during scheduled service
• Repeat failure of the original plastic pulley design
• Loss of proper belt tension from a worn tensioner assembly

Installation Notes and Tips

Verify engine and model-year fitment before installation. This tensioner uses an automatic mechanical design with pull-pin activation and a hex bolt head. Follow the vehicle service procedure for timing belt alignment, belt routing, and tension setting during replacement.

Quality Assurance

Dorman OE FIX parts are built to address known OE failure points with updated materials and design changes. Part number 420-154 is a standard replacement timing belt tensioner for the listed Chrysler and Dodge applications.