Gates CHK139 Engine Timing Chain Kit

Timing Chain Kit Overview

The Gates CHK139 timing chain component kit is built for engine timing service where OE-level function and fit matter. It is a fitment-based replacement for select Chevrolet and GMC trucks and vans, including Silverado 1500 and Sierra 1500 applications.

Gates Timing Chain Component Kits draw on the brand’s timing drive system experience in both original equipment and replacement markets. This CHK139 kit is engineered to meet or exceed OE standards in function, fit, and performance.

Key Features

• Steel roller timing chain construction for durable timing drive operation.
• Includes timing chains, tensioner, guide, and sprockets for a complete timing service solution.
• Steel camshaft sprocket material for consistent engagement and wear resistance.
• Chain guides and tensioner included to support proper chain control.
• Fits select Chevrolet Silverado 1500, GMC Sierra 1500, and related applications.
• Part number CHK139 for accurate ordering and catalog matching.

Detailed Description

The Gates CHK139 is an engine timing chain kit designed around the components commonly replaced during timing drive service. With steel chain construction, roller chain design, and included guides, tensioner, and sprockets, it addresses the core wear points in the timing system. This makes it a practical choice for select Chevrolet Silverado 1500 and GMC Sierra 1500 engines, as well as compatible Express and Savana applications listed in the fitment data. The CHK139 part number is also cross-referenced to Cloyes 9-4205SD and 94205SDX for the same application.

What It Helps Address

• Excess timing chain wear.
• Noise from a stretched or loose timing drive.
• Timing control issues caused by worn guides or tensioner components.
• Service needs when sprockets and chain components are replaced together.
• Fitment-specific replacement requirements for Chevrolet and GMC engine timing systems.

Installation Notes and Tips

Verify engine application, model year, and timing system configuration before installation. This kit is intended for the listed fitments only, including 2014-2020 Chevrolet Silverado 1500, 2014-2020 GMC Sierra 1500, 2018-2020 Chevrolet Express 2500 and Express 3500, 2018-2020 GMC Savana 2500 and Savana 3500, and 2017 Chevrolet Silverado 2500. Follow factory timing procedures and alignment marks during service.

Quality Assurance

Gates is a global leader in timing drive systems across OE and replacement markets. The CHK139 timing chain component kit is built to meet or exceed OE standards in function, fit, and performance.