OE Quality
60-Day Returns

ATP Parts Z-124 Automatic Transmission Flexplate
Automatic Transmission Flexplate for GM Applications
ATP Parts Z-124 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 166 ring gear teeth to match the original-style fit and function.
For Cadillac Commercial Chassis, Fleetwood, DeVille, and Eldorado applications, this flexplate supports the torque converter connection and starter engagement required in automatic transmission setups. The ATP Parts Z-124 is a direct replacement choice when the original flexplate is cracked, warped, or damaged.
Key Features
- Automatic transmission flexplate for engine-to-transmission connection
- 13.938 in. outside diameter
- 166 teeth for starter engagement
- 11.5 mm mounting hole diameter
- 12 to 14 pitch flywheels
- High-quality steel construction
- OE-style bolt-hole spacing and ring gear tooth layout
- Part number: Z-124
Detailed Description
Flexplates are exposed to repeated expansion and contraction as engine speed changes, and that stress can lead to cracking or shearing over time. When a flexplate fails, it cannot be repaired and must be replaced. ATP Parts Z-124 is engineered to restore the connection between the engine, torque converter, and starter with the correct 166-tooth ring gear and a 13.938-inch outside diameter. This part number, Z-124, is a practical replacement for Cadillac Commercial Chassis, Fleetwood, DeVille, and Eldorado models listed in the fitment data.
This part cross-references Pioneer Automotive Industries FRA-106 for the same application.
What This Part Helps Address
- Cracked flexplate from repeated drivetrain stress
- Sheared or damaged ring gear teeth
- Starter engagement problems caused by worn teeth
- Torque converter connection issues in automatic transmission systems
- Noise or vibration related to a failing flexplate
Installation Notes and Tips
Verify tooth count, outside diameter, and mounting dimensions before installation. Confirm the application matches the listed Cadillac fitment and check for the 166-tooth, 13.901-inch outer diameter notes shown in the vehicle data. Inspect the torque converter, starter drive, and related fasteners for wear or damage before installing the new flexplate. Professional installation is recommended for automatic transmission drivetrain service.
Quality Assurance
ATP Parts manufactures this flexplate from steel with OE-style dimensions and tooth spacing to support proper fitment and long-term durability in the listed applications.
| Brand | ATP Parts |
|---|---|
| Part Number | Z-124 |
| Diameter (in) | 1.161 |
| Diameter (mm) | 348.175 |
| LineCode | ATP4 |
| Mounting Hole Diameter | 11.5 |
| Outside Diameter | 13.938 |
| Pitch Flywheels | 12 To 14 |
| Teeth | 166 |
| Tooth Quantity | 166 |
This part fits 59 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 1984 | Cadillac | Commercial Chassis | 6.0L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1984 | Cadillac | Fleetwood | 6.0L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1983 | Cadillac | Commercial Chassis | 6.0L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1983 | Cadillac | Fleetwood | 6.0L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1982 | Cadillac | Commercial Chassis | 6.0L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1982 | Cadillac | Fleetwood | 6.0L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1981 | Cadillac | Commercial Chassis | 6.0L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1981 | Cadillac | DeVille | 6.0L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1981 | Cadillac | Eldorado | 6.0L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1981 | Cadillac | Fleetwood | 6.0L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1980 | Cadillac | Commercial Chassis | 6.0L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1980 | Cadillac | DeVille | 6.0L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1980 | Cadillac | Eldorado | 6.0L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1980 | Cadillac | Fleetwood | 6.0L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1979 | Cadillac | Commercial Chassis | 7.0L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1979 | Cadillac | DeVille | 7.0L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1979 | Cadillac | Fleetwood | 7.0L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1978 | Cadillac | Commercial Chassis | 7.0L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1978 | Cadillac | DeVille | 7.0L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1978 | Cadillac | Eldorado | 7.0L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1978 | Cadillac | Fleetwood | 7.0L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1977 | Cadillac | Commercial Chassis | 7.0L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1977 | Cadillac | DeVille | 7.0L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1977 | Cadillac | Eldorado | 7.0L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1977 | Cadillac | Fleetwood | 7.0L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1976 | Cadillac | DeVille | 8.2L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901"; w/o Weight |
| 1976 | Cadillac | Eldorado | 8.2L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901"; w/o Weight |
| 1976 | Cadillac | Fleetwood | 8.2L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1975 | Cadillac | DeVille | 8.2L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901"; w/o Weight |
| 1975 | Cadillac | Eldorado | 8.2L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901"; w/o Weight |
| 1975 | Cadillac | Fleetwood | 8.2L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1974 | Cadillac | Commercial Chassis | 7.7L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1974 | Cadillac | DeVille | 7.7L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1974 | Cadillac | Eldorado | 8.2L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1974 | Cadillac | Fleetwood | 7.7L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1973 | Cadillac | Commercial Chassis | 7.7L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1973 | Cadillac | DeVille | 7.7L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1973 | Cadillac | Eldorado | 8.2L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1973 | Cadillac | Fleetwood | 7.7L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1972 | Cadillac | Commercial Chassis | 7.7L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1972 | Cadillac | DeVille | 7.7L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1972 | Cadillac | Eldorado | 8.2L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1972 | Cadillac | Fleetwood | 7.7L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1971 | Cadillac | Commercial Chassis | 7.7L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1971 | Cadillac | DeVille | 7.7L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1971 | Cadillac | Eldorado | 8.2L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1971 | Cadillac | Fleetwood | 7.7L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1970 | Cadillac | Commercial Chassis | 7.7L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1970 | Cadillac | DeVille | 7.7L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1970 | Cadillac | Eldorado | 8.2L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1970 | Cadillac | Fleetwood | 7.7L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1969 | Cadillac | Commercial Chassis | 7.7L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1969 | Cadillac | DeVille | 7.7L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1969 | Cadillac | Eldorado | 7.7L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1969 | Cadillac | Fleetwood | 7.7L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1968 | Cadillac | Commercial Chassis | 7.7L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1968 | Cadillac | DeVille | 7.7L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1968 | Cadillac | Eldorado | 7.7L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
| 1968 | Cadillac | Fleetwood | 7.7L | V8 | N/A | Teeth: 166; Outer Diameter: 13.901" |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.