Dorman 420-132 Driver Side Engine Timing Chain Tensioner Left Side

The Dorman 420-132 is a direct-fit replacement driver side (left) engine timing chain tensioner engineered to match the fit and function of the original equipment tensioner on select Ford, Lincoln, and Mercury vehicles equipped with the 4.6L, 5.4L, and 6.8L modular V8/V10 engines.

A worn or failed timing chain tensioner can cause timing chain slack, resulting in rattling noises on startup, erratic engine timing, and in severe cases, catastrophic engine damage. Replacing the tensioner at the same time as the timing chain and sprockets helps ensure proper chain tension and long-term drivetrain reliability.

Key Features:

• Direct replacement: Designed to match the OE tensioner in fit, form, and function — no modifications required
• Steel construction: Built from durable metal materials for long service life under demanding engine conditions
• Driver side (left): This is the left-side tensioner only — sold individually
• Recommended service item: Best practice is to replace tensioners whenever a new timing chain and sprockets are installed
• No drilling required: Installs using the factory mounting points
• OE Solutions line: Backed by Dorman's U.S.-based team of product engineers and over a century of automotive aftermarket experience

The Dorman 420-132 is part of the OE Solutions product line, offering aftermarket replacement parts engineered to restore original vehicle performance. UPC: 037495729802.