Cloyes S894T Engine Timing Camshaft Sprocket - Front

Cloyes Timing Camshaft Sprocket S894T

The Cloyes S894T timing camshaft sprocket is a specific-fit engine timing component for GM applications that rely on precise cam timing and stable chain engagement. Built for front-mounted timing system service, it supports accurate valve timing in vehicles such as the Chevrolet Camaro, Corvette, Silverado, Tahoe, and GMC Sierra.

As part of Cloyes Timing Camshaft Sprocket product line, this sprocket is engineered for rebuilds and replacement work where bore accuracy, tooth form, and consistent fit matter. The design uses a helical tooth profile for quieter operation and a precision-machined bore for true fit.

Key Features

• Engine timing camshaft sprocket for specific GM applications
• Metal construction with gray finish
• 44-tooth design with 0.21 in. tooth width
• Precision-machined bore for accurate fitment
• Helical tooth form for quieter timing system operation
• Single-row chain configuration
• Non-adjustable design with no keyway notch

Detailed Description

Cloyes S894T is a front timing camshaft sprocket designed for engines used in the 2006-2017 Chevrolet and GMC platform coverage listed below, including Chevrolet Camaro, Corvette, Silverado 1500, Silverado 2500, Tahoe, and GMC Sierra applications. It measures 5.35 in. outside diameter, 0.65 in. inside diameter, and 0.65 in. thickness, with a 0.65 in. mount hole inside diameter. Cloyes manufactures this sprocket using CAD-based design and advanced materials, then tests each part for function and durability to support dependable engine timing service.

This part cross-references GM 12591689 for the same application.

What It Helps Address

• Worn or damaged camshaft sprocket teeth
• Timing chain noise from an aging sprocket surface
• Incorrect cam timing caused by sprocket wear
• Engine rebuild needs requiring a direct replacement timing sprocket
• Front timing system service on GM V8 and related applications

Installation Notes and Tips

• Verify engine code, sensor configuration, and front timing layout before ordering.
• Replace the timing chain, tensioner(s), and guide(s) when servicing the chain system.
• Confirm the sprocket matches the vehicle’s specific fitment, including notes such as 4 Sensors; Single Bolt Cam where listed.
• Inspect related timing components for wear before reassembly.

Quality Assurance

Cloyes designs and manufactures timing components with CAD-based engineering and advanced materials, then tests them for function and durability. The S894T is built to support reliable timing system service in engine rebuilds and routine replacement work.