Dorman 419-149 Accessory Drive Belt Tensioner Assembly

Accessory Drive Belt Tensioner Assembly

This Dorman accessory drive belt tensioner assembly is a standard replacement for specified applications. Part number 419-149 is engineered to help maintain proper serpentine belt tension when the original belt is slipping, broken, or worn from fatigue.

Key Features

• Standard replacement design for direct-fit service on selected vehicles.
• Aluminum and steel construction for durable belt system support.
• Serpentine belt application with a single pulley layout.
• Counterclockwise rotation design.
• Hex bolt head style for service-friendly installation.

Detailed Description

Built for accessory drive belt service, this tensioner assembly is made to match the fit of an original equipment assembly on compatible Nissan and Suzuki applications. The aluminum housing and steel pulley construction provide a practical OE-style replacement for belt system repair, while the counterclockwise rotation and standard replacement grade support correct operation in the accessory drive system. Part number 419-149 is a direct-fit option for drivers addressing belt noise, loss of tension, or wear in the belt drive system. It is a fitment-based solution for Nissan Frontier, Nissan Xterra, Nissan Pathfinder, Nissan NV1500, Nissan NV2500, Nissan NV3500, and Suzuki Equator applications.

What It Helps Fix

• Serpentine belt slipping under load.
• Belt noise caused by weak or worn tension.
• Loss of belt tension from fatigue in the original assembly.
• Accessory drive issues related to a worn tensioner pulley.
• Service needs on belt drive systems in Nissan Frontier and Nissan Xterra applications.

Installation Notes and Tips

Verify belt routing, rotation direction, and mounting dimensions before installation. Confirm the replacement matches the original tensioner configuration for the specific vehicle application. Use the correct service procedure for the accessory drive belt system and inspect the belt and related pulleys for wear at the same time.

Quality Assurance

Dorman designs this assembly as a standard replacement part that matches original equipment fit on listed applications. Part number 419-149 is supported by cross-reference part numbers including Continental 49394 and Dorman - HELP 38738 for the same application.