ATP Parts Z-136 Automatic Transmission Flexplate

Reliable Automatic Transmission Flexplate for Chevrolet and GMC Vehicles

The ATP Parts Z-136 automatic transmission flexplate is engineered to meet the demands of various Chevrolet, GMC, and Hummer models. Designed with precision, this flexplate ensures proper engagement between the engine and the transmission for smooth power transfer.

• Outside diameter: 14.125 inches
• Tooth quantity: 139 teeth for accurate starter engagement
• Mounting hole diameter: 11.5 mm for secure fitment
• Diameter: 1.177 inches (358.775 mm)
• Pitch flywheels: 10
• Weight added for balanced operation
• Compatible with multiple Chevrolet, GMC, and Hummer models

Durable Design and Precise Specifications

The ATP Parts Z-136 flexplate is manufactured to exact specifications, featuring 139 teeth that provide reliable starter motor engagement. Its 14.125-inch outside diameter and 11.5 mm mounting hole diameter ensure compatibility with a wide range of automatic transmissions used in Chevrolet Blazer, C10, C1500, and Yukon models, as well as GMC Savana and Hummer H1 vehicles. The added weight balances the flexplate during operation, reducing vibration and wear. Although not SFI approved, this flexplate meets the necessary standards for everyday driving and moderate performance applications.

Compatible Vehicles and Applications

This flexplate is compatible with numerous Chevrolet, GMC, and Hummer models, including but not limited to:

• Chevrolet Blazer, C10, C20, C1500, C2500, C3500, Tahoe, Yukon
• GMC Savana 2500, Savana 3500, Sierra 1500 series, and other full-size trucks and vans
• Hummer H1 and related models

It is designed for automatic transmissions requiring a 139-tooth flexplate with a 14.125-inch diameter, making it suitable for replacement or repair in these vehicles.

Common Issues Addressed by the ATP Parts Z-136 Flexplate

• Starter motor engagement problems due to worn or damaged flexplate teeth
• Vibration or imbalance caused by a damaged or improperly weighted flexplate
• Transmission noise or rough shifting linked to flexplate wear
• Flexplate cracks or warping from prolonged use or stress
• Replacement during engine or transmission rebuilds requiring precise fitment

Installation Notes and Tips

When installing the ATP Parts Z-136 flexplate, ensure the mounting surface is clean and free of debris. Torque mounting bolts to manufacturer specifications to avoid warping. Verify the tooth count and diameter match the vehicle’s requirements before installation. It is recommended to inspect the starter motor ring gear for wear during replacement. Professional installation is advised for optimal performance and safety.

Quality Assurance and Warranty

ATP Parts manufactures the Z-136 flexplate with quality materials and precise engineering to meet OEM standards. While this flexplate is not SFI certified, it is designed for durability and reliable operation in compatible Chevrolet, GMC, and Hummer vehicles. Warranty coverage details should be confirmed with the distributor or ATP Parts directly.