ATP Parts Z-156 Automatic Transmission Flexplate

ATP Parts Z-156 Flexplate Overview

ATP Parts Z-156 is an automatic transmission flexplate built for vehicles that use a flex plate to connect the engine and transmission. It is made from high-quality steel with the correct bolt-hole spacing and ring gear teeth to match the original application, helping maintain proper starter engagement and torque converter fitment.

With 142 teeth and an 11.875-inch outside diameter, this flexplate is specified for a wide range of GM and related applications, including Chevrolet Cavalier, Lumina, Malibu, Monte Carlo, Corsica, and Lumina APV models, along with Oldsmobile, Pontiac, Buick, Cadillac, and select Isuzu vehicles. Part number Z-156 is a direct replacement choice when the original flexplate is cracked, warped, or damaged.

Key Features

• Automatic transmission flexplate for engine-to-transmission connection
• 142-tooth ring gear for starter engagement
• 11.875-inch outside diameter
• High-quality steel construction for durability
• Correct bolt-hole spacing to match OE-style fitment
• Designed for applications listed with 12-inch outer diameter notes
• Part number Z-156 for easy identification

Detailed Product Description

The flexplate is a critical rotating component in automatic transmission systems. It transfers engine rotation to the torque converter while allowing for the movement and expansion that occurs as engine speed changes. Over time, repeated stress can lead to cracks or shearing, and once a flexplate is damaged it must be replaced rather than repaired. ATP Parts Z-156 is manufactured to the proper dimensions and tooth count for the listed applications, including Chevrolet Cavalier and Pontiac Grand Prix fitments, so the starter and torque converter interface remains consistent with OE requirements.

This part cross-references Pioneer Automotive Industries FRA-138 and Standard Ignition V526 for the same application.

What This Flexplate Helps Address

• Cracked or fractured flexplate surfaces
• Starter engagement problems caused by worn ring gear teeth
• Noise from a damaged or distorted flexplate
• Torque converter mounting issues from incorrect bolt spacing
• Drivetrain damage caused by continued use of a failing flexplate

Installation Notes and Fitment

Compatible With 1982-1997 Chevrolet Cavalier, N/A; 1990-1997 Chevrolet Lumina, N/A; 1997 Chevrolet Malibu, N/A; 1995-1997 Chevrolet Monte Carlo, N/A; 1987-1996 Chevrolet Corsica, N/A; 1990-1996 Chevrolet Lumina APV, N/A; 1987-1990 Chevrolet Celebrity, N/A; 1985-1986 Chevrolet Cavalier, N/A; 1994-1997 Oldsmobile Achieva, N/A; 1997 Oldsmobile Cutlass, N/A; 1988-1997 Oldsmobile Cutlass Supreme, N/A; 1996-1997 Oldsmobile Silhouette, N/A; 1990-1994 Oldsmobile Silhouette, N/A; 1993-1996 Oldsmobile Cutlass Ciera, N/A; 1987-1989 Oldsmobile Cutlass Ciera, N/A; 1982-1985 Oldsmobile Cutlass Ciera, N/A; 1994-1997 Pontiac Grand Am, N/A; 1989-1997 Pontiac Grand Prix, N/A; 1995-1997 Pontiac Sunfire, N/A; 1990-1995 Pontiac Trans Sport, N/A; 1991-1994 Pontiac Sunbird, N/A; 1986 Pontiac Sunbird, N/A; 1984-1991 Pontiac 6000, N/A; 1988-1989 Pontiac 6000, N/A; 1988-1989 Pontiac Grand Prix, N/A; 1982-1988 Cadillac Cimarron, N/A; 1985-1986 Cadillac Cimarron, N/A; 1982-1989 Buick Skyhawk, N/A; 1993-1994 Buick Century, N/A; 1987-1989 Buick Century, N/A; 1993 Buick Regal, N/A; 1989 Buick Regal, N/A; 1988-1992 Buick Regal, N/A; 1994 Oldsmobile Cutlass Cruiser, N/A; 1987-1989 Oldsmobile Cutlass Cruiser, N/A; 1991-1992 Isuzu Rodeo, N/A; 1990-1991 Isuzu Trooper, N/A; 1988 Pontiac Fiero, N/A; 1987-1988 Oldsmobile Firenza, N/A; 1982-1987 Oldsmobile Firenza, N/A; 1985 Oldsmobile 98, N/A; 1984-1985 Pontiac J2000 Sunbird, N/A; 1982-1983 Pontiac J2000, N/A.

Verify the 142-tooth count, 11.875-inch outside diameter, and mounting-hole dimensions before installation. The notes in the fitment data include applications with and without weight, so confirm the exact engine and transmission configuration for the vehicle being serviced. Part number Z-156 is commonly searched for Chevrolet Cavalier, Pontiac Grand Prix, and Oldsmobile Cutlass Ciera automatic transmission repairs.

Quality Assurance

ATP Parts manufactures this flexplate from steel with OE-style bolt-hole spacing and ring gear tooth geometry to support proper fit and long-term durability in the listed applications.