ATP Parts Z-116 Automatic Transmission Flexplate

Automatic Transmission Flexplate Overview

ATP Parts flexplate Z-116 is an automatic transmission flexplate built for classic GM applications that use a 166-tooth ring gear and a 13.938-inch outside diameter. It connects the engine and torque converter, helping maintain proper starter engagement and drivetrain operation in compatible Oldsmobile, Buick, Cadillac, and Pontiac vehicles.

Key Features

• High-strength steel construction for durability under repeated expansion and contraction.
• 166 teeth with correct ring gear spacing for starter engagement.
• 13.938-inch outside diameter and 11.5-inch mounting hole diameter.
• 12-to-14 pitch flywheel specification.
• Weight-added design for applications that require it.
• ATP Parts Z-116 replacement for automatic transmission service.

Detailed Fitment and Function

This flexplate is used in automatic transmission systems where the engine and transmission must remain mechanically linked while allowing the torque converter to expand as engine speed changes. ATP Parts Z-116 is engineered with the correct bolt-hole spacing and ring gear teeth to match original-style fitment, making it a direct replacement choice for many classic GM platforms. Fits 1968-1978 Oldsmobile Cutlass, N/A; Fits 1968-1978 Oldsmobile Cutlass Supreme, N/A; Fits 1969-1978 Oldsmobile Delta 88, N/A; Fits 1977-1978 Buick LeSabre, N/A; Fits 1977-1978 Pontiac Firebird, N/A.

Common Problems This Part Addresses

• Cracked flexplate material from long-term fatigue.
• Sheared or damaged flexplate teeth affecting starter engagement.
• Torque converter connection issues in automatic transmission systems.
• Noise or drivability problems caused by a failing flexplate.
• Replacement needs after a broken flexplate cannot be repaired.

Installation Notes and Tips

Verify tooth count, outside diameter, and mounting hole spacing before installation. This part cross-references Pioneer Automotive Industries (e.g., FRA-102) and AMS Automotive (e.g., 4313) for the same application. Confirm the application-specific weight-added requirement shown in the fitment notes, since some listings call for a weighted flexplate and others do not. Use the vehicle's original specifications to confirm proper automatic transmission fitment for Oldsmobile, Buick, and Pontiac applications.

Quality Assurance

ATP Parts manufactures this flexplate from high-quality steel with original-style bolt-hole spacing and ring gear teeth to support long service life and durability.