Dorman 420-001 Engine Timing Chain Tensioner - Left or Right

Engine Timing Chain Tensioner for Ford Super Duty

This Dorman engine timing chain tensioner is a standard replacement for select Ford trucks and vans with left or right side applications. Built from steel with a hydraulic design, it matches the fit and function of the original tensioner for dependable timing chain control.

Part number 420-001 is a direct-fit option for Ford F-150, Ford F-350, Ford F-250 Super Duty, and Ford E-350 Super Duty applications listed below. It is engineered for the specified engine timing chain tensioner position and is a practical replacement when the original unit is worn or no longer maintaining proper chain tension.

Key Features

• Hydraulic timing chain tensioner design
• Steel construction for standard replacement service
• Matches original fit and function on listed applications
• Compatible with left and right side positions where specified
• Dorman 420-001 for select Ford engine timing systems

Detailed Description

Dorman 420-001 is an engine timing chain tensioner built for specified Ford applications where consistent chain tension is critical to valve train operation. The hydraulic design helps maintain proper timing chain control, while the steel body supports durable everyday service. This part cross-references Ford AL3Z6L266A for the same application.

Use this timing chain tensioner on 2010-2014 Ford F-150, left or right; 2011-2016 Ford F-350, left or right; 2011-2018 Ford F-250 Super Duty, left or right; 2011-2018 Ford F-350 Super Duty, left or right; and 2017-2018 Ford E-350 Super Duty, left or right. If you are searching for a timing chain tensioner for Ford F-150 2010-2014 or a replacement timing chain tensioner for Ford Super Duty trucks, this part number 420-001 is listed for those applications.

What It Helps Fix

• Timing chain slack or inconsistent chain tension
• Rattling or noise from the timing chain area
• Wear-related loss of hydraulic tensioner performance
• Valve timing issues caused by a weak or failing tensioner
• Need for a direct replacement on listed Ford engine applications

Installation Notes and Tips

Confirm engine application, side, and model year before installation. This tensioner does not include a mounting bracket, installation hardware, or installation instructions. Clean the timing area thoroughly and inspect the chain, guides, and related components before reassembly to avoid repeat service.

Quality Assurance

Dorman designs this replacement tensioner to match the original part’s fit and function on the specified vehicles. The part is built as a standard replacement using steel construction for reliable service in the listed Ford applications.