ATP Parts Z-128 Automatic Transmission Flexplate

Overview of ATP Parts Z-128 Automatic Transmission Flexplate

The ATP Parts Z-128 automatic transmission flexplate is engineered for reliable performance in a range of Chevrolet and GMC vehicles. Designed to meet specific fitment requirements, this flexplate ensures proper engagement between the engine and transmission for smooth power transfer.

• Inside diameter: 2.483 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 inches
• Weight added for balanced operation

Detailed Product Description

The ATP Parts Z-128 flexplate is designed specifically for automatic transmissions in Chevrolet and GMC models including the Bel Air, Blazer, C10 series, Caprice, Corvette, Impala, and various Suburban and pickup truck variants. With 168 teeth and precise mounting hole diameter of 11.5 mm, this flexplate provides accurate engagement with the starter motor and transmission input shaft. The 14.125-inch outside diameter and 2.483-inch inside diameter ensure compatibility with a range of flywheel sizes, particularly those between 12 and 14 inches. The added weight feature helps maintain balance during engine operation, reducing vibration and wear.

Compatible Vehicles and Applications

• Chevrolet Bel Air, Blazer, C10, C20, C30, Caprice, Corvette, El Camino, Impala, Malibu, Monte Carlo
• GMC C1500, C2500, C3500, G20, G30, Jimmy, K5 Blazer, K10, K20, K30, K1500, K3500, P20, P30, P1500, P3500, R20, R30, R2500, R3500, V20, V30, V2500, V3500 Suburban models

Common Issues Addressed by the Flexplate

• Starter engagement problems due to worn or damaged teeth
• Transmission input shaft misalignment
• Excessive vibration caused by unbalanced flexplates
• Cracks or warping from heat and stress over time
• Incompatibility with specific flywheel sizes leading to improper fit

Installation Notes and Tips

• Verify tooth count and mounting hole diameter match your vehicle’s specifications
• Inspect the flywheel and starter motor for wear before installation
• Ensure proper torque settings on mounting bolts to avoid flexplate damage
• Check for balance and alignment during installation to prevent vibration issues
• Use appropriate tools to avoid damaging the flexplate teeth or mounting holes

Quality Assurance and Warranty

ATP Parts manufactures the Z-128 flexplate to meet industry standards for durability and fitment. While this flexplate is not SFI approved and does not include an SFI certification sticker, it is constructed with quality materials and balanced weight to support reliable transmission operation. Warranty coverage details should be confirmed with the parts provider or manufacturer documentation.