Gates CHK143A Engine Timing Chain Kit

Timing Chain Kit Overview

Gates CHK143A is an engine timing chain kit built for hybrid Toyota and Lexus applications that require primary sprocket coverage. It is engineered to meet or exceed OE standards in function, fit, and performance, with steel chain construction and included drive components for a complete timing service.

Key Features

• Steel roller timing chain construction for durable valve train operation.
• Includes chain guides, tensioner, and drive sprocket components.
• 8 mm chain pitch and 140-pin chain specification.
• Primary sprocket coverage for selected hybrid engine applications.
• Gates timing drive system engineering from OE and aftermarket experience.

Detailed Description

This Gates timing chain component kit is designed for hybrid engine timing service where accurate camshaft and crankshaft synchronization is critical. The kit uses steel chain material with roller chain design, plus steel camshaft sprocket components and plastic/steel guide construction to support consistent timing drive operation. Gates CHK143A is a direct-fit timing chain service solution for select Toyota Prius, Toyota Prius Prime, Toyota Prius V, Toyota Prius Plug-In, Toyota Prius AWD-e, and Lexus CT200h applications. This part cross-references Cloyes 9-4220SA for the same application.

What It Helps Address

• Timing chain stretch or wear that can affect engine timing accuracy.
• Noisy timing drive operation from worn guides or tensioner components.
• Loss of synchronization between camshaft and crankshaft timing events.
• Service needs on interference-engine timing systems.
• Replacement of worn primary timing drive components during engine repair.

Installation Notes and Tips

Verify engine code and fitment notes before installation, especially the primary sprocket-only application detail. Follow factory timing procedures, mark alignment points carefully, and inspect related seals and wear surfaces during service. Because this kit is used on interference-engine applications, correct timing alignment is essential during reassembly.

Quality Assurance

Gates is a global supplier of timing drive systems in both original equipment and replacement markets. CHK143A is built to meet or exceed OE standards in function, fit, and performance.