Dorman 419-302 Accessory Drive Belt Tensioner Assembly

Overview of Dorman Accessory Drive Belt Tensioner Assembly 419-302

The Dorman 419-302 accessory drive belt tensioner assembly is designed to maintain proper tension on serpentine belts for reliable engine performance. This tensioner is compatible with select Chrysler, Dodge, and Plymouth models, including the Caravan, Grand Caravan, and LeBaron.

• Compatible with Chrysler, Dodge, and Plymouth vehicles
• Designed for serpentine belt systems
• Single steel pulley with a 90 mm outside diameter
• Clockwise (CW) tensioner rotation
• Durable steel AISI 1008 pulley material
• Includes one pulley bearing with a 40 mm diameter

Technical Specifications and Features

The Dorman 419-302 tensioner assembly features a pulley with a 90 mm outside diameter and a 17 mm inside diameter, ensuring precise belt alignment. The pulley width measures 20 mm on one side and 30 mm on the other, accommodating serpentine belts without grooves. Constructed from steel AISI 1008, the pulley offers durability and resistance to wear. The tensioner rotates clockwise, which matches the belt routing on compatible Chrysler, Dodge, and Plymouth models such as the Spirit and Sundance. This assembly includes one pulley bearing with a 40 mm diameter to support smooth operation and reduce friction.

Compatible Vehicles and Applications

This accessory drive belt tensioner assembly is compatible with a range of Chrysler, Dodge, and Plymouth vehicles, including:

• Chrysler Acclaim, LeBaron, Spirit, Sundance, Voyager, Grand Voyager
• Dodge Caravan, Grand Caravan, Daytona
• Plymouth Sundance, Voyager

Use the Dorman 419-302 tensioner to replace worn or damaged tensioners in these models to maintain proper serpentine belt tension and prevent belt slippage or noise.

Common Issues Addressed by This Tensioner

• Eliminates belt slippage caused by loss of tension
• Reduces belt noise and squealing
• Prevents premature belt wear and damage
• Restores proper belt alignment and routing
• Improves accessory drive system reliability

Installation Notes and Tips

When installing the Dorman 419-302 tensioner assembly, ensure the serpentine belt is properly routed according to the vehicle’s service manual. The clockwise rotation of the tensioner should be verified to match the original equipment. Use appropriate tools to relieve tension safely and avoid damage to the belt or tensioner components. Inspect the belt for wear and replace if necessary during installation.

Quality Assurance and Warranty

Dorman manufactures this accessory drive belt tensioner assembly to meet or exceed OEM specifications. The steel pulley and bearing are engineered for durability and consistent performance. This part is backed by Dorman’s standard warranty coverage, providing confidence in its reliability for Chrysler, Dodge, and Plymouth vehicle applications.