ATP Parts Z-121 Automatic Transmission Flexplate

Overview of ATP Parts Z-121 Automatic Transmission Flexplate

The ATP Parts Z-121 automatic transmission flexplate is engineered for reliable performance in a range of Chevrolet vehicles. Designed to meet specific dimensional requirements, this flexplate supports smooth power transfer in models such as the Chevrolet Camaro, Impala, and Suburban.

• Inside diameter: 2.482 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
• Not SFI approved and does not include SFI certification sticker
• Weight added: No

Detailed Product Description

The ATP Parts Z-121 flexplate is designed specifically for automatic transmissions in Chevrolet vehicles including the Bel Air, C10 and C20 Suburban, Camaro, Caprice, Corvette, El Camino, Impala, K10 Suburban, Malibu, Monte Carlo, Nova, P20, and P30 models. With 168 teeth and precise inside and outside diameters, this flexplate ensures proper engagement with the starter and transmission components. The mounting hole diameter of 11.5 mm allows for secure attachment to the crankshaft, while compatibility with 12 to 14 inch pitch flywheels makes it suitable for a variety of engine setups. This flexplate is not SFI approved, so it is intended for street and light-duty applications rather than racing environments.

Common Applications and Problem Solving

• Replaces worn or damaged flexplates in Chevrolet automatic transmissions
• Addresses starter engagement issues caused by missing or damaged teeth
• Corrects vibration or noise problems related to flexplate imbalance or damage
• Ensures proper fitment for specific Chevrolet models requiring a 168-tooth flexplate
• Supports smooth torque transfer between engine and transmission

Installation Notes and Tips

• Verify compatibility with your Chevrolet model and transmission before installation
• Inspect the crankshaft flange and mounting holes for damage prior to installation
• Use proper torque specifications when securing the flexplate to avoid warping
• Check starter ring gear engagement after installation to ensure proper fit
• Consult vehicle service manual for detailed installation procedures

Quality Assurance and Warranty

ATP Parts manufactures the Z-121 flexplate to meet industry standards for durability and fitment. While this flexplate is not SFI certified, it is built to provide consistent performance in compatible Chevrolet automatic transmissions. Warranty coverage details should be confirmed through the ATP Parts official documentation or authorized distributors.