ATP Parts Z-270 Automatic Transmission Flexplate

Automatic Transmission Flexplate for GM Applications

ATP Parts Z-270 is an automatic transmission flexplate built for GM trucks, vans, and SUVs that use a 168-tooth crank-mounted design. It connects the engine to the torque converter and starter ring gear, helping maintain proper drivetrain engagement in Chevrolet Silverado, Express, Suburban, GMC Sierra, Savana, Yukon, and Yukon XL applications.

Key Features

• Automatic transmission flexplate for crank mounting applications
• 168 teeth for starter engagement
• Outside diameter: 14.125 in. / 358.775 mm
• Inside diameter: 3.125 in.
• Mounting hole diameter: 11.5 in.
• Pitch flywheels: 12 to 14
• High-quality steel construction for durability
• Correct bolt-hole spacing and ring gear tooth layout to match OE fitment

Detailed Description

The ATP Parts Z-270 flexplate is engineered for automatic transmission vehicles that require a 168-tooth, crank-mounting flexplate with the specified diameter and bolt pattern. It is used in a wide range of GM fitments, including 2003-2009 Chevrolet Express 2500 and Express 3500, 2003-2009 GMC Savana 2500 and Savana 3500, 2003-2006 Chevrolet Silverado 1500, 2001-2006 Chevrolet Silverado 2500 HD and Silverado 3500, 2001-2006 GMC Sierra 2500 HD and Sierra 3500, and related Silverado, Sierra, Suburban, Yukon, and Yukon XL applications. Part number Z-270 is built to match the original part’s critical dimensions so the torque converter and starter can engage correctly.

This part cross-references Pioneer Automotive Industries FRA-450 for the same application.

What It Helps Address

• Cracked flexplate from repeated expansion and contraction
• Sheared or damaged ring gear teeth
• Starter engagement problems caused by worn teeth
• Torque converter connection issues from incorrect bolt spacing
• Noise or drivability concerns related to a failing flexplate

Installation Notes and Tips

• Verify tooth count, outside diameter, inside diameter, and crank-mounting dimensions before installation.
• Confirm vehicle-specific fitment for your Chevrolet Silverado, GMC Sierra, Express, Savana, Suburban, Yukon, or Yukon XL application.
• Inspect the starter, torque converter, and related drivetrain components for wear before replacing the flexplate.
• Use the correct application notes, including spacer requirements where listed in fitment data.

Quality Assurance

ATP Parts manufactures this flexplate from high-quality steel with OE-style bolt-hole spacing and ring gear teeth to support proper fit and long service life. Z-270 is not SFI approved and does not include an SFI certification sticker.