Pioneer Cables 871010 Automatic Transmission Flexplate

Automatic Transmission Flexplate for GM V8 Applications

Pioneer Cables 871010 is an automatic transmission flexplate built to restore OEM-level performance in supported GM applications. It is made from high-grade steel, welded with an automated process for consistent strength, and precision balanced to factory specifications.

With a 12.859-inch outside diameter, 153 teeth, and 12-14 pitch flywheel compatibility, this SFI-approved flexplate is built for 1986-1997 Pontiac Firebird, 1986-1996 Chevrolet Camaro, and other listed Buick, Cadillac, Chevrolet, and Pontiac applications. Pioneer Cables 871010 also includes an SFI certification sticker and carries a 29.1 certification rating.

Key Features

• Part number 871010 automatic transmission flexplate
• 153-tooth ring gear for listed GM applications
• 12.859-inch outside diameter
• High-grade steel construction
• Automated welding for consistent strength
• Precision balanced to factory specifications
• SFI approved with certification sticker included
• 29.1 certification rating
• 12-14 pitch flywheel specification

Detailed Description

Pioneer Cables 871010 is an OE-style replacement flexplate for automatic transmission setups that require a 153-tooth, SFI-certified design. It is engineered to match original dimensions and balance requirements, helping maintain proper starter engagement and rotational stability in supported vehicles. This part number 871010 is listed for applications including Pontiac Firebird, Chevrolet Camaro, Chevrolet Corvette, Buick Roadmaster, Cadillac Fleetwood, and other compatible GM models shown in the fitment data.

This flexplate is a direct-fit solution for drivers servicing a 1986-1997 Pontiac Firebird automatic transmission flexplate application, a 1986-1996 Chevrolet Camaro flexplate replacement, or a 1986-1996 Chevrolet Corvette flexplate service job where 153 teeth and SFI certification are required.

What It Helps Address

• Cracked or fatigued flexplate material
• Starter engagement issues caused by worn ring gear teeth
• Vibration from an out-of-balance flexplate
• Replacement needs after inspection failure in SFI-required applications
• Restoration of factory-style transmission-to-engine interface

Installation Notes and Tips

• Verify 153-tooth, 12.859-inch, and 12-14 pitch requirements before installation.
• Confirm vehicle-specific fitment for the exact year, make, and model listed.
• Inspect the starter, crankshaft flange, and related fasteners during replacement.
• Follow factory service procedures for torque and alignment.
• Use this part only in applications matching the listed notes, including weight and SFI requirements where specified.

Quality Assurance

Pioneer Cables manufactures this flexplate from high-grade steel and balances it to factory specifications for consistent fit and operation. The part is SFI approved and includes an SFI certification sticker, supporting use in applications that require certified flexplate construction.