ATP Parts Z-600 Automatic Transmission Flexplate

ATP Parts Z-600 Flexplate Overview

ATP Parts Z-600 is an automatic transmission flexplate built for vehicles that use a torque converter and starter ring gear interface. It is made from high-quality steel with the correct bolt-hole spacing and 168 teeth to match the original application requirements for a direct replacement.

Fits 1999-2010 Chevrolet Silverado 1500 HD, Silverado 2500, Silverado 2500 HD, Silverado 3500, Silverado 3500 Classic, Express 1500, Express 2500, Express 3500, Suburban 2500; 1999-2010 GMC Sierra 1500, Sierra 1500 HD, Sierra 2500, Sierra 2500 HD, Sierra 3500, Sierra 3500 Classic, Sierra 3500 HD, Savana 1500, Savana 2500, Savana 3500, Yukon, Yukon XL 2500; and 2000-2008 Chevrolet Suburban 2500 and GMC Yukon XL 2500, with notes for w/o spacer where listed in the fitment data.

Key Features

• Part number Z-600 automatic transmission flexplate
• 168-tooth ring gear for starter engagement
• 14.125-inch outside diameter
• 1.177-inch diameter specification listed in the product data
• 12-to-14 pitch flywheel pattern
• High-quality steel construction for OE-style fit and durability
• Direct replacement geometry with correct bolt-hole spacing
• Cross-reference: Pioneer Automotive Industries FRA-452

Detailed Description

The flexplate connects the engine to the automatic transmission and provides the starter ring gear teeth used during engine cranking. 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-600 is built to match the original fitment details for the listed Chevrolet Silverado, GMC Sierra, Express, Savana, Yukon, and Suburban applications, helping maintain proper torque converter alignment and starter engagement.

This part number Z-600 is specified with 168 teeth and a 14.13-inch outer diameter, making it a fitment-focused replacement for the confirmed vehicle applications above. It is not SFI approved and does not include an SFI certification sticker.

Common Problems This Part Can Address

• Cracked flexplate from repeated drivetrain stress
• Sheared or damaged ring gear teeth affecting starter engagement
• Noise from a flexplate that has begun to fail
• Torque converter connection issues caused by flexplate damage
• Expensive drivetrain damage related to a broken flexplate

Installation Notes and Tips

Verify the vehicle’s transmission and spacer configuration before ordering, since the fitment data includes applications marked w/o spacer. Confirm tooth count, outside diameter, and bolt-hole pattern against the original part before installation. Inspect the starter, torque converter, and related mounting surfaces during replacement so the new flexplate is installed on a clean, undamaged interface.

Quality Assurance

ATP Parts manufactures this flexplate from high-quality steel and matches the original bolt-hole spacing and ring gear tooth layout for the listed applications. The product data does not list a warranty, so no warranty terms are stated here.