Pioneer Cables FRA-131 Automatic Transmission Flexplate

Pioneer FRA-131 Flexplate Overview

The Pioneer Cables FRA-131 automatic transmission flexplate is a direct replacement part built to restore OEM-level fit and function. 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 select 1979-1980 Buick Century, LeSabre, and Regal applications, as well as the 1980 Chevrolet Monte Carlo, this flexplate is built around the original dimensions and 160-tooth design required for the listed vehicles.

Key Features

• Part number: FRA-131
• Automatic transmission flexplate for select Buick and Chevrolet applications
• 13.438-inch outside diameter
• 160 teeth / 160-tooth ring gear
• 11.5 mounting hole diameter
• 1.120-inch diameter specification
• 341.313 mm diameter specification
• 12-pitch flywheel specification
• Built from high-grade steel
• Automated welding for consistent construction
• Precision balanced to factory specs

Detailed Description

The Pioneer Cables FRA-131 is an OE-style automatic transmission flexplate engineered for proper starter engagement and reliable drivetrain operation. Its 160-tooth layout, 13.438-inch outside diameter, and factory-matched dimensions make it a strong choice for restoring the original setup on 1979 Buick Century, LeSabre, and Regal models, plus 1980 Buick Century, LeSabre, and Regal models and the 1980 Chevrolet Monte Carlo. This part cross-references AMS Automotive 4332 for the same application.

Common Problems This Part Can 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
• Fitment problems from incorrect diameter or tooth count

Installation Notes and Tips

Verify tooth count, outside diameter, and mounting-hole dimensions before installation. Confirm the vehicle’s original flexplate design matches the listed 160-tooth specification and review the notes for 1979 applications, which reference the first design with 4 large circles and 2 crescents. Inspect the starter, torque converter interface, and related fasteners during service to ensure the replacement flexplate seats correctly and operates smoothly.

Quality Assurance

Pioneer Cables builds this flexplate from high-grade steel, uses automated welding for consistency, and balances each unit to factory specifications to help maintain OEM-level performance and durability.