Pioneer Cables FRA-339 Automatic Transmission Flexplate

Automatic Transmission Flexplate for OE-Style Replacement

The Pioneer Cables FRA-339 automatic transmission flexplate is built as a direct replacement for restoring factory-style driveline performance. It is made from high-grade steel, welded with an automated process for consistent strength, and precision balanced to factory specifications.

Compatible With Buick Century, Buick LeSabre, Buick Riviera, Oldsmobile Cutlass Ciera, Oldsmobile Cutlass Cruiser, Oldsmobile Delta 88, Oldsmobile 98, Oldsmobile Toronado, and Pontiac Bonneville applications that use a 142-tooth flexplate and 11.938-inch outside diameter.

• Part number: FRA-339
• 142 teeth for the listed automatic transmission applications
• 11.938-inch outside diameter for OE-style fitment
• Built from high-grade steel for durability
• Automated welding process for consistent construction
• Precision balanced to factory specs
• Pitch flywheels: 12 to 14
• Mounting hole diameter: 9.5 mm

Detailed Product Overview

This Pioneer Cables flexplate is intended for drivers replacing a worn or damaged automatic transmission flexplate on select GM vehicles. The FRA-339 matches the original dimensions called out for the application, including 142 teeth and a 11.938-inch outer diameter, helping maintain proper starter engagement and drivetrain alignment. It is a practical choice for Buick Century and LeSabre, Oldsmobile Cutlass Ciera and Delta 88, and Pontiac Bonneville service work where OE-style dimensions matter.

This part cross-references AMS Automotive 4431 for the same application.

Common Problems This Part Can Address

• Cracked or warped flexplate surfaces
• Starter engagement issues caused by worn teeth
• Vibration from an out-of-balance flexplate
• Noise from damaged or fatigued transmission-to-engine connection points
• Replacement needs during automatic transmission service on listed Buick, Oldsmobile, and Pontiac models

Installation Notes and Tips

Verify tooth count, outside diameter, and mounting dimensions before installation. Confirm the vehicle uses a 142-tooth flexplate with the specified 11.938-inch diameter and 12-to-14 pitch flywheel setup. Inspect the starter, crankshaft flange, and related hardware for wear before installing the new flexplate, and follow the vehicle service manual for torque and alignment procedures.

Quality Assurance

Pioneer Cables builds this flexplate to original dimensions using high-grade steel, automated welding, and factory-spec balancing to support consistent replacement quality.