ATP Parts Z-492 Automatic Transmission Flexplate

Automatic Transmission Flexplate for GM 6.6L Applications

ATP Parts Z-492 is an automatic transmission flexplate built for GM truck and van applications that use a 168-tooth ring gear and a 14.125-inch outside diameter. It connects the engine to the torque converter and provides the starter ring gear engagement needed for reliable cranking.

For Chevrolet Silverado 2500 HD, Silverado 3500, Suburban 2500, and GMC Sierra 2500 HD or Sierra 3500 applications, ATP Parts Z-492 is a direct-fit replacement that matches the original bolt pattern and tooth count. This flexplate is made from high-quality steel for durability in demanding automatic transmission service.

Key Features

• Automatic transmission flexplate for GM applications
• 168 teeth for starter engagement
• 14.125-inch outside diameter
• 12 to 14 pitch flywheels
• 1.177-inch diameter specification
• High-quality steel construction
• OE-style bolt hole spacing and ring gear tooth layout
• ATP Parts part number Z-492

Detailed Description

The flexplate is a critical link between the engine and automatic transmission, transferring rotational movement to the torque converter while also serving as the starter ring gear. Over time, repeated expansion and contraction can lead to cracking or shearing, and a damaged flexplate should be replaced rather than repaired. ATP Parts Z-492 is engineered to match the original fit and tooth configuration for the listed Chevrolet and GMC applications, including 2001-2006 Chevrolet Silverado 2500 HD and 3500, 2001-2006 GMC Sierra 2500 HD and 3500, and 2007 Classic Silverado and Sierra heavy-duty models. The Z-492 part number is also cross-referenced to Pioneer Automotive Industries FRA-531 for the same application.

What It Helps Address

• Cracked flexplate from fatigue or repeated stress
• Sheared or damaged ring gear teeth
• Starter engagement problems caused by worn teeth
• Torque converter connection issues in automatic transmission service
• Noise or vibration related to a damaged flexplate

Installation Notes and Tips

Verify tooth count, outside diameter, and pitch flywheel requirements before installation. This part fits 2001-2006 Chevrolet Silverado 2500 HD, 2001-2006 Chevrolet Silverado 3500, 2001-2006 Chevrolet Suburban 2500, 2001-2006 GMC Sierra 2500 HD, 2001-2006 GMC Sierra 3500, 2001-2006 GMC Yukon XL 2500, 2001-2002 Chevrolet Express 3500, 2001-2002 GMC Savana 3500, 2002-2006 Chevrolet Avalanche 2500, and 2007 Chevrolet Silverado 2500 HD Classic, Silverado 3500 Classic, GMC Sierra 2500 HD Classic, and Sierra 3500 Classic. Inspect the torque converter, starter, and related mounting surfaces during replacement to help prevent repeat failure.

Quality Assurance

ATP Parts manufactures this flexplate with the correct bolt hole spacing and ring gear teeth to match the original part specification. The steel construction is intended to provide long service life in automatic transmission applications.