Pioneer Cables FRA-578 Automatic Transmission Flexplate

Pioneer Cables FRA-578 Flexplate Overview

The Pioneer Cables FRA-578 is an automatic transmission flexplate built to restore OEM-level performance in supported applications. It is made from high-grade steel, welded with an automated process for consistent strength, and precision balanced to factory specifications.

Compatible With Cadillac SRX, Cadillac CTS, Cadillac STS, Buick LaCrosse, Buick Rendezvous, and Pontiac G8 applications that use a 142-tooth flexplate with an 11.875-inch outside diameter.

Key Features

• Part number: FRA-578
• Automatic transmission flexplate for OE-style replacement use
• 142 teeth with 11.875-inch outside diameter
• 0.990-inch diameter specification
• 12 to 14 pitch flywheel application
• Built from high-grade steel for durability
• Automated welding process for consistent construction
• Precision balanced to factory specs

Detailed Product Description

Pioneer Cables FRA-578 is engineered for vehicles that require a 142-tooth automatic transmission flexplate with an 11.875-inch outside diameter. This flexplate is listed for 2004-2009 Cadillac SRX, 2004-2007 Cadillac CTS, 2005-2007 Cadillac STS, 2005-2008 Buick LaCrosse, 2004-2006 Buick Rendezvous, and 2008-2009 Pontiac G8. The FRA-578 also cross-references 1257042 and 12572042 for the same application.

Its original-dimension construction helps maintain proper starter engagement and drivetrain alignment in supported Cadillac, Buick, and Pontiac applications. The factory-style balance and welded steel design make it a direct replacement choice when servicing an automatic transmission flexplate on these vehicles.

Common Uses

• Replacing a cracked or warped flexplate
• Correcting starter ring gear engagement issues
• Addressing drivetrain vibration from an out-of-balance flexplate
• Restoring proper crankshaft-to-transmission connection
• Servicing automatic transmission noise caused by flexplate damage

Installation Notes

Verify tooth count, outside diameter, and pitch before installation. Confirm the FRA-578 matches the vehicle’s transmission and starter engagement requirements before assembly. Inspect the mating surfaces, fasteners, and related drivetrain components during service to help ensure proper fitment and operation.

Quality Assurance

Pioneer Cables builds this flexplate to original dimensions using high-grade steel, automated welding, and precision balancing to factory specifications. SFI approval is not listed for this part.