Cloyes VC108 Engine Variable Valve Timing (VVT) Sprocket - Exhaust

Cloyes VC108 VVT Sprocket Overview

The Cloyes VC108 is a variable valve timing exhaust sprocket built for a wide range of GM, Buick, Cadillac, Chevrolet, GMC, Saturn, Saab, Pontiac, and Suzuki applications. It is a steel timing component with a precision-machined bore, helical tooth form for quieter operation, and application-focused OE-style fitment for engine repair and rebuild work.

Compatible With 2007-2022 Buick Enclave exhaust applications, 2007-2022 Chevrolet Traverse exhaust applications, and other listed GM-platform vehicles, the VC108 is used where accurate cam timing and stable chain engagement are required. This part number, VC108, is also referenced across multiple OE interchange numbers for direct replacement use.

Key Features

• Variable Valve Timing (VVT) exhaust sprocket for engine valve train service
• Steel construction for durability in timing system applications
• Helical tooth form for quieter chain operation
• Precision-machined bore for true fit
• CAD-designed and manufactured using advanced materials
• Two timing marks for alignment during installation
• Single-row chain design
• Mounting hardware included

Product Details

Cloyes positions the VC108 within its Variable Valve Timing (VVT) Sprocket line for timing system service on engines that use an exhaust-side VVT sprocket. The sprocket measures 3.7 inches outside diameter, uses 40 teeth, and features a steel body with a 0.42-inch inside diameter. Its 1.504-inch tooth thickness and 0.317-inch tooth width support consistent chain engagement in the timing assembly.

This part number, VC108, is listed for vehicles such as the Chevrolet Impala, Cadillac CTS, and GMC Acadia, along with Buick LaCrosse, Chevrolet Equinox, and Pontiac G6 exhaust applications. For repair shops and DIY engine work, it is a direct-fit timing component for replacing a worn or noisy VVT sprocket during timing service.

This part cross-references OE numbers 12606653 and 12614464 for the same application.

What It Helps Address

• Timing chain noise from a worn exhaust VVT sprocket
• Cam timing inconsistency caused by sprocket wear
• Engine performance issues related to timing system degradation
• Service failures during timing chain replacement when the sprocket is not renewed
• Fitment concerns on listed Buick, Cadillac, Chevrolet, GMC, Pontiac, Saab, Saturn, and Suzuki exhaust applications

Installation Notes

Use the VC108 only on the listed exhaust applications and verify engine-specific catalog data before installation. Cloyes recommends replacing the chain tensioner, sprocket, and guide components together when servicing the timing chain, since these parts work as a system to maintain chain tension and alignment. Confirm timing marks during assembly and follow the vehicle service procedure for cam timing setup.

Quality Assurance

Cloyes designs and manufactures timing components with CAD-based engineering and tests each part for function and durability. The VC108 is built for dependable timing system service in engine rebuilds and routine replacement work.