Pioneer Cables FRA-104 Automatic Transmission Flexplate

Pioneer Cables FRA-104 Flexplate Overview

The Pioneer Cables FRA-104 is an automatic transmission flexplate built for OE-style replacement on a range of classic Chevrolet and GMC applications. It uses high-grade steel, factory-style dimensions, automated welding, and precision balancing to help restore proper starter engagement and smooth drivetrain operation.

With a 14.125-inch outside diameter, 168 teeth, and an 11.5-inch torque converter mounting hole spread, this flexplate is a direct-spec choice for externally balanced engines in many 1970-1980 Chevrolet C10, C20, K10, and GMC truck applications.

Key Features

• Part number: FRA-104
• Automatic transmission flexplate for OE-style replacement
• 14.125-inch outside diameter
• 168-tooth ring gear for starter engagement
• 11.5-inch torque converter mounting hole spread
• Built from high-grade steel
• Automated welding for consistent strength
• Precision balanced to factory specifications
• For externally balanced engine applications

Detailed Description

Pioneer Cables FRA-104 is engineered as a replacement automatic transmission flexplate for vehicles that require a 168-tooth, externally balanced design. The plate is manufactured to original dimensions and balanced to factory specs, helping maintain proper rotational stability and reliable converter alignment. This makes it a practical choice for owners servicing classic Chevrolet and GMC drivetrains where correct flexplate geometry is critical.

Common fitment includes Chevrolet C10, C20, K10, K20, K30, K5 Blazer, and GMC C1500, G2500, K1500, and K2500 applications. If you are searching for a flexplate for a 1970-1980 Chevrolet C10 or a 1979-1980 GMC K1500, FRA-104 matches the listed external-balance configuration and mounting dimensions.

This part cross-references Four Seasons 33601 for the same application.

What This Flexplate Helps Address

• Starter ring gear wear or damaged teeth
• Cracked or warped flexplate surfaces
• Converter bolt pattern mismatch on listed applications
• Vibration caused by an out-of-balance flexplate
• Replacement needs on externally balanced Chevrolet and GMC engines

Installation Notes and Tips

Verify engine balance type before installation, since this flexplate is listed for externally balanced engines only. Confirm the 168-tooth count, 14.125-inch outside diameter, and 11.5-inch torque converter mounting hole spread against the original part before assembly. Check starter engagement and converter bolt alignment during installation to ensure proper fitment on Chevrolet C10, C20, K10, and GMC truck applications.

Quality Assurance

Pioneer Cables manufactures this flexplate from high-grade steel with automated welding and precision balancing to factory specifications. The design is focused on restoring OEM-level performance in the listed applications.