ATP Parts Z-270 Automatic Transmission Flexplate

Overview of ATP Parts Z-270 Automatic Transmission Flexplate

The ATP Parts Z-270 automatic transmission flexplate is engineered for reliable performance in select Chevrolet and GMC vehicles. Designed with precise dimensions and tooth count, this flexplate ensures proper crankshaft mounting and smooth transmission operation for models like the Silverado 1500 and Sierra 2500 HD.

• Inside diameter: 3.125 inches
• Outside diameter: 14.125 inches
• Tooth quantity: 168 teeth
• Mounting hole diameter: 11.5 mm
• Diameter: 1.177 inches (358.775 mm)
• Compatible with pitch flywheels sized 12 to 14
• Crank mounting application

Detailed Product Description

The ATP Parts Z-270 flexplate is specifically designed for automatic transmissions in Chevrolet and GMC trucks and SUVs, including the Express 2500, Express 3500, Sierra 1500 HD Classic, Silverado 3500 Classic, Yukon XL 2500, and more. With 168 teeth, it matches the starter ring gear requirements for smooth engine starts and reliable torque transfer. The 3.125-inch inside diameter and 14.125-inch outside diameter provide a precise fit for crankshaft mounting, while the 11.5 mm mounting hole diameter ensures secure attachment. This flexplate is compatible with pitch flywheels ranging from 12 to 14 inches, making it suitable for a range of heavy-duty applications.

Common Applications and Issues Addressed

• Replacement for worn or damaged flexplates causing starter engagement problems
• Fixes vibration issues related to flexplate imbalance or cracks
• Resolves transmission noise caused by flexplate wear
• Addresses improper torque transfer between engine and transmission
• Prevents failure due to mounting hole elongation or tooth damage

Installation Notes and Tips

• Ensure compatibility with your specific Chevrolet or GMC model before installation
• Inspect the crankshaft flange and starter ring gear for wear prior to mounting
• Torque mounting bolts to manufacturer specifications to avoid flexplate damage
• Check alignment carefully to prevent vibration and premature wear
• Use appropriate tools to avoid damaging the flexplate teeth during installation

Quality Assurance and Warranty

ATP Parts manufactures the Z-270 flexplate to meet OEM specifications for fit and function. While this flexplate is not SFI approved and does not include an SFI certification sticker, it is built to provide consistent performance in compatible Chevrolet and GMC vehicles. Warranty coverage details should be confirmed with the parts distributor or manufacturer documentation.