Pioneer Cables 871009 Automatic Transmission Flexplate

Pioneer Cables 871009 SFI Flexplate

The Pioneer Cables 871009 automatic transmission flexplate is built for Ford and Mercury applications that require a 157-tooth, SFI-approved replacement. It is made from high-grade steel, formed to original dimensions, and precision balanced to factory specifications for consistent drivetrain operation.

Key Features

• Part number 871009 automatic transmission flexplate
• 157 teeth with a 10.5-inch outside diameter
• 0.875-inch diameter and 266.7 mm diameter specification
• 12-14 pitch flywheel configuration
• High-grade steel construction with automated welding for strength and consistency
• Precision balanced to factory specs
• SFI approved with SFI certification sticker included
• 29.1 certification safety rating

Detailed Description

Pioneer Cables 871009 is an automatic transmission flexplate engineered as an OEM-style replacement for select Ford Mustang, Mercury Cougar, Mercury Montego, Mercury Monarch, and Ford LTD applications. The 157-tooth design and 10.5-inch outside diameter support the specified drivetrain setup, while the steel construction and automated welding process help maintain dimensional accuracy and structural consistency. This flexplate is a direct choice for restorations and repairs where SFI certification and factory-style fit are required.

This part number 871009 cross-references no listed aftermarket interchange numbers in the provided data.

What It Is Used For

• Replacing a worn or damaged automatic transmission flexplate
• Restoring proper starter ring gear engagement on 157-tooth applications
• Addressing vibration concerns related to an out-of-balance flexplate
• Supporting drivetrain service on SFI-certified Ford and Mercury builds
• Repairing flexplate cracking, warping, or tooth wear

Installation Notes and Fitment

Compatible With 1964-1968 Ford Mustang, exc. Special Eng.; SFI Certified.

Compatible With 1968-1971 Ford Mustang, SFI Certified.

Compatible With 1972 Ford Mustang, w/o Cast Iron Auto Trans; SFI Certified.

Compatible With 1973 Ford Mustang, SFI Certified.

Compatible With 1967 Ford LTD, exc. Special Eng.; SFI Certified.

Compatible With 1968-1972 Ford LTD, SFI Certified.

Compatible With 1967-1968 Mercury Cougar, SFI Certified.

Compatible With 1968 Mercury Cougar, exc. Special Eng.; SFI Certified.

Compatible With 1968-1970 Mercury Cougar, exc. Special Eng.; SFI Certified; Only Fits FMX.

Compatible With 1968-1970 Mercury Cougar, exc. Special Eng.; SFI Certified; Only Fits C4.

Compatible With 1968-1974 Mercury Montego, exc. Special Eng.; SFI Certified.

Compatible With 1968-1972 Mercury Montego, exc. Special Eng.; SFI Certified; Only Fits FMX.

Compatible With 1968-1972 Mercury Montego, exc. Special Eng.; SFI Certified; Only Fits C4.

Compatible With 1974 Mercury Montego, exc. Special Eng.; SFI Certified; Only Fits FMX.

Compatible With 1974 Mercury Montego, exc. Special Eng.; SFI Certified; Only Fits C4.

Compatible With 1975 Mercury Monarch, exc. Special Eng.; SFI Certified.

Compatible With 1976 Mercury Monarch, w/13.30" Flexplate; SFI Certified.

Verify the 157-tooth count, 10.5-inch outside diameter, and transmission-specific notes before installation. Match the flexplate to the correct FMX or C4 application where noted, and confirm the engine and transmission combination against the vehicle listing.

Quality Assurance

Pioneer Cables builds this flexplate from original-dimension steel and uses automated welding plus precision balancing to meet factory-style specifications. It is SFI approved and includes the SFI certification sticker.