Pioneer Cables FRA-129 Automatic Transmission Flexplate

Automatic Transmission Flexplate for GM Applications

Pioneer Cables FRA-129 is an automatic transmission flexplate built to restore OEM-level performance in the correct application. It is made from high-grade steel, welded with an automated process for consistent strength, and precision balanced to factory specifications for smooth operation.

Compatible With 1977-1979 Oldsmobile Starfire and select 1977-1978 Buick, Chevrolet, Oldsmobile, and Pontiac models, this flexplate is built around the original dimensions and tooth count required for proper starter engagement and drivetrain alignment.

Key Features

• High-grade steel construction for durability in automatic transmission use
• Automated welding process for consistent structural integrity
• Precision balanced to factory specs
• 160-tooth design for confirmed applications
• 13.438 in. outside diameter and 2.5 in. inside diameter
• 11.75 in. mounting hole diameter
• Cross-references Federal Parts 4330 and Febi-Bilstein 33625 for the same application

Detailed Description

This Pioneer Cables FRA-129 automatic transmission flexplate is engineered as a direct replacement for select GM rear-wheel-drive applications. The 160-tooth ring gear, 13.438-inch outside diameter, and 2.5-inch inside diameter support correct starter mesh and crankshaft interface where the original flexplate specification is required. It is a practical choice for restoring drivability in vehicles such as the Buick LeSabre, Chevrolet Monte Carlo, Oldsmobile Cutlass, and Pontiac Firebird when the original flexplate is worn, cracked, or out of balance.

Fits 1977 Buick LeSabre, N/A; Fits 1977 Oldsmobile Delta 88, N/A; Fits 1977 Pontiac Catalina, N/A; Fits 1977 Pontiac Sunbird, N/A; Fits 1978 Buick Century, N/A; Fits 1978 Buick LeSabre, N/A; Fits 1978 Buick Regal, N/A; Fits 1978 Buick Skyhawk, N/A; Fits 1978 Buick Skylark, N/A; Fits 1978 Chevrolet El Camino, N/A; Fits 1978 Chevrolet Malibu, N/A; Fits 1978 Chevrolet Monte Carlo, N/A; Fits 1978 Chevrolet Monza, N/A; Fits 1978 Oldsmobile Cutlass, N/A; Fits 1978 Oldsmobile Cutlass Calais, N/A; Fits 1978 Oldsmobile Cutlass Salon, N/A; Fits 1978 Oldsmobile Cutlass Supreme, N/A; Fits 1978 Oldsmobile Delta 88, N/A; Fits 1978 Oldsmobile Omega, N/A; Fits 1978 Pontiac Catalina, N/A; Fits 1978 Pontiac Firebird, N/A; Fits 1978 Pontiac Grand LeMans, N/A; Fits 1978 Pontiac Grand Prix, N/A; Fits 1978 Pontiac LeMans, N/A; Fits 1978 Pontiac Phoenix, N/A; Fits 1978 Pontiac Sunbird, N/A; Fits 1979 Oldsmobile Starfire, N/A.

What It Helps Address

• Cracked or warped flexplate surfaces
• Starter engagement issues caused by worn ring gear teeth
• Vibration from an out-of-balance flexplate
• Noise from damaged or fatigued flexplate material
• Incorrect replacement dimensions in automatic transmission service

Installation Notes and Tips

Verify tooth count, outside diameter, inside diameter, and mounting hole diameter before installation. Confirm the application uses the 160-tooth specification and review vehicle notes such as the 1977 even-fire engine requirement and the 1978 first-design note where listed. Inspect the starter, crankshaft flange, and related fasteners for wear before installing the new flexplate.

Quality Assurance

Pioneer Cables builds this flexplate to original dimensions using automated welding and factory balancing to support consistent fit and operation. The part is not SFI approved and no SFI certification sticker is included.