ATP Parts Z-156 Automatic Transmission Flexplate

Overview of ATP Parts Z-156 Automatic Transmission Flexplate

The ATP Parts Z-156 automatic transmission flexplate is engineered for reliable performance in a range of GM and Isuzu vehicles. Designed with precise specifications, this flexplate ensures proper engagement between the engine and the torque converter for smooth transmission operation.

• Outside diameter: 11.875 inches
• Tooth quantity: 142 teeth
• Mounting hole diameter: 8.5 mm
• Pitch flywheels: 12
• Diameter: 0.990 inches (25.15 mm)
• Compatible with multiple Buick, Cadillac, Chevrolet, Isuzu, Oldsmobile, and Pontiac models

Detailed Product Description and Specifications

The ATP Parts Z-156 flexplate features a 142-tooth design with an outside diameter of 11.875 inches, making it suitable for automatic transmissions requiring this specific configuration. The mounting hole diameter of 8.5 mm ensures secure attachment to the crankshaft. With a pitch flywheel count of 12, this flexplate matches the flywheel specifications of various GM and Isuzu vehicles. The diameter of 0.990 inches (approximately 25.15 mm) corresponds to the thickness or relevant dimension critical for proper fitment and function.

This flexplate is compatible with a wide range of vehicles including Buick models like the Century and Regal, Cadillac, Chevrolet models such as the Cavalier, Malibu, and Monte Carlo, as well as Isuzu Rodeo and Trooper, Oldsmobile Cutlass series, and Pontiac Grand Am and Sunfire. The part number Z-156 identifies this specific flexplate within the ATP Parts catalog, ensuring correct replacement and fitment.

Applications and Common Issues Addressed

• Replacement for worn or damaged flexplates causing transmission engagement problems
• Fixes issues related to starter ring gear tooth damage or missing teeth
• Resolves vibration or noise caused by flexplate warping or cracks
• Addresses improper torque converter alignment due to flexplate defects
• Prevents transmission slippage linked to flexplate failure

Installation Notes and Tips

• Verify compatibility with your vehicle’s make, model, and year before installation
• Inspect the crankshaft flange and torque converter for wear or damage prior to mounting
• Use proper torque specifications when tightening mounting bolts to avoid flexplate distortion
• Ensure the flexplate teeth align correctly with the starter motor gear
• Check for any signs of imbalance or damage after installation to prevent drivetrain issues

Quality Assurance and Warranty Information

The ATP Parts Z-156 flexplate is manufactured to meet OEM specifications for durability and fitment. While this flexplate is not SFI approved and does not include an SFI certification sticker, it is designed to provide reliable service in compatible automatic transmission systems. ATP Parts products typically come with a limited warranty against manufacturing defects; please refer to ATP Parts documentation for specific warranty terms.