Pioneer Cables FRA-100HD Automatic Transmission Flexplate

Automatic Transmission Flexplate for GM Applications

The Pioneer Cables FRA-100HD is an automatic transmission flexplate built to restore OEM-level performance in a wide range of classic Chevrolet, GMC, Buick, Oldsmobile, and Pontiac applications. It is built from high-grade steel, welded with an automated process for consistent strength, and precision balanced to factory specifications.

With a 168-tooth ring gear, 14.125-inch outside diameter, and 11.25-inch mounting hole diameter, this flexplate is a direct-fit replacement for many GM vehicles that require a heavy-duty automatic transmission flexplate.

• Part number: FRA-100HD
• 168-tooth ring gear for confirmed GM fitments
• 14.125 in. outside diameter
• 2.49 in. inside diameter
• 11.25 in. mounting hole diameter
• Built from high-grade steel for replacement use
• Automated welding process for consistent construction
• Precision balanced to factory specs
• Cross-reference part numbers: 340296, 471598

Detailed Product Overview

Pioneer Cables FRA-100HD is an automatic transmission flexplate for GM rear-wheel-drive and truck applications that use a 168-tooth, 14.13-inch heavy-duty style plate. It is listed across many Chevrolet C10, C20, K10, K20, Camaro, Caprice, Impala, El Camino, Nova, Corvette, and P30 applications, along with GMC, Buick, Oldsmobile, and Pontiac models from 1967 through 1987. This part number is a practical replacement choice when the original flexplate is worn, cracked, or no longer running true.

This flexplate is not SFI approved and does not include an SFI certification sticker. Use the confirmed vehicle notes to match transmission and engine configuration before ordering. FRA-100HD is also referenced by 340296 and 471598 for the same application.

What This Flexplate Helps Fix

• Cracked or fatigued flexplate material
• Starter engagement issues caused by worn ring gear teeth
• Vibration from an out-of-balance flexplate
• Noise from damaged or inconsistent ring gear engagement
• OEM replacement needs on older GM automatic transmission vehicles

Installation Notes and Fitment Tips

Confirm tooth count, outside diameter, and transmission application before installation. This part is listed for many vehicles with configuration-specific notes such as THM350, THM400, THM, heavy-duty versions, police packages, and exclusions for racing or special high-performance engines. For example, it fits 1987 Chevrolet P30, N/A; fits 1987 GMC P2500, N/A; fits 1985 Chevrolet Astro, N/A; fits 1985 GMC Safari, N/A; and fits 1967 Chevrolet Camaro, N/A, when the listed notes match the vehicle.

Check the converter bolt pattern, starter alignment, and ring gear engagement during installation. Because fitment varies by year and drivetrain configuration, verify the notes for your exact vehicle before final assembly.

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. The product information provided does not include a warranty statement.