Cloyes S878T Engine Timing Camshaft Sprocket - Front

Overview of Cloyes Timing Camshaft Sprocket S878T

The Cloyes Timing Camshaft Sprocket S878T is a precision-engineered component designed for specific engine valve train applications. Crafted from durable metal, this sprocket ensures reliable timing chain engagement for a range of GM and related vehicles.

• Material: Metal construction for durability
• Tooth Quantity: 44 teeth for accurate timing
• Tooth Width: 0.21 inches
• Inside Diameter: 0.55 inches
• Outside Diameter: 5.35 inches
• Thickness: 0.73 inches
• Chain Row Quantity: Single row (1.0)
• Mounting Holes: 3 holes with 0.38 inch diameter each
• Color: Gray finish
• Non-adjustable design without keyway notch
• Specific fit for select Buick, Cadillac, Chevrolet, GMC, Hummer, Isuzu, Pontiac, and Saab models

About the Cloyes Timing Camshaft Sprocket Product Line

The Cloyes Timing Camshaft Sprocket line focuses on delivering precise timing components engineered to meet OEM specifications. This product line emphasizes exact tooth count and dimensions to maintain proper valve timing and engine performance. The S878T sprocket is part of this line, designed to provide consistent chain engagement and durability for specific engine configurations.

Detailed Product Description

The Cloyes S878T camshaft sprocket is manufactured from high-quality metal to withstand the stresses of engine operation. Featuring 44 teeth with a 0.21-inch tooth width, it ensures accurate timing chain meshing. The sprocket’s dimensions, including a 0.55-inch inside diameter and 5.35-inch outside diameter, are tailored for specific engine models. Its thickness of 0.73 inches and three mounting holes (each 0.38 inches in diameter) provide secure installation. The gray finish offers corrosion resistance and a professional appearance. This sprocket is non-adjustable and does not include a keyway notch, reflecting its precise fitment requirements.

Compatible Vehicles and Applications

• Buick 9-7x, Rainier, and Rendezvous
• Cadillac CTS, Escalade, Escalade ESV, Escalade EXT
• Chevrolet Avalanche 1500, Corvette, Express 1500/2500/3500, Impala, Monte Carlo, Silverado 1500/2500/3500, Suburban 1500/2500, Tahoe, Trailblazer, Trailblazer EXT
• GMC Envoy, Envoy XL, Envoy XUV, Sierra 1500/2500/3500, Yukon, Yukon XL 1500/2500
• Hummer H2
• Isuzu Ascender
• Pontiac Grand Prix, GTO
• Saab 9-7x

This sprocket is designed specifically for these models, ensuring proper valve timing and engine performance when replacing worn or damaged camshaft sprockets.

Common Issues Addressed by the S878T Camshaft Sprocket

• Worn or damaged camshaft sprocket teeth causing timing chain slippage
• Engine timing irregularities leading to poor performance or misfires
• Excessive wear from metal fatigue or corrosion
• Replacement during timing chain or valve train repairs
• Restoring proper valve timing after component failure

Installation Notes and Tips

Installation of the Cloyes S878T camshaft sprocket requires precise alignment with the timing chain and camshaft. Ensure the engine is at top dead center (TDC) before removal and installation. Use proper torque specifications for the mounting bolts and verify the sprocket’s orientation matches OEM guidelines. This sprocket is non-adjustable and does not feature a keyway notch, so correct positioning is critical. It is recommended to inspect the timing chain and related components during installation for wear or damage.

Quality Assurance and Warranty

Cloyes manufactures the S878T camshaft sprocket to meet or exceed OEM standards for material and dimensional accuracy. The metal construction provides durability under normal operating conditions. While specific warranty details are not provided here, Cloyes products typically come with manufacturer-backed quality assurance to support reliable engine performance.