Pioneer Cables 859022 Automatic Transmission Flexplate Mounting Bolt

Automatic Transmission Flexplate Mounting Bolt

Pioneer Cables 859022 is an automatic transmission flexplate mounting bolt for GM performance and full-size applications that use a 7/16-20 thread and .6875-inch bolt measurement. It is a direct-fit hardware choice for service work on Chevrolet Camaro, Corvette, Impala, and other listed models that require this flexplate fastener specification.

Key Features

• Part number 859022 for automatic transmission flexplate mounting applications
• Thread diameter: 0.438 in. (7/16-20)
• Length: 20.0
• Fits 6-bolt high-performance flexplate applications noted in the vehicle listing
• Compatible with a wide range of Chevrolet, Pontiac, and Oldsmobile models

Fitment Details

• Fits 1967-1997 Chevrolet Camaro, N/A — 6 Bolts - Hi-Perf.; Bolt Measurement: 7/16 - 20 x .6875"
• Fits 1984-1997 Chevrolet Corvette, N/A — 6 Bolts - Hi-Perf.; Bolt Measurement: 7/16 - 20 x .6875"
• Fits 1957-1982 Chevrolet Corvette, N/A — 6 Bolts - Hi-Perf.; Bolt Measurement: 7/16 - 20 x .6875"
• Fits 1966-1996 Chevrolet Caprice, N/A — 6 Bolts - Hi-Perf.; Bolt Measurement: 7/16 - 20 x .6875"
• Fits 1994-1996 Chevrolet Impala, N/A — 6 Bolts - Hi-Perf.; Bolt Measurement: 7/16 - 20 x .6875"
• Fits 1959-1985 Chevrolet Impala, N/A — 6 Bolts - Hi-Perf.; Bolt Measurement: 7/16 - 20 x .6875"
• Fits 1970-1988 Chevrolet Monte Carlo, N/A — 6 Bolts - Hi-Perf.; Bolt Measurement: 7/16 - 20 x .6875"
• Fits 1964-1984 Chevrolet El Camino, N/A — 6 Bolts - Hi-Perf.; Bolt Measurement: 7/16 - 20 x .6875"
• Fits 1973-1983 Chevrolet Malibu, N/A — 6 Bolts - Hi-Perf.; Bolt Measurement: 7/16 - 20 x .6875"
• Fits 1964-1967 Chevrolet Malibu, N/A — 6 Bolts - Hi-Perf.; Bolt Measurement: 7/16 - 20 x .6875"
• Fits 1981 Chevrolet Bel Air, N/A — 6 Bolts - Hi-Perf.; Bolt Measurement: 7/16 - 20 x .6875"
• Fits 1957-1975 Chevrolet Bel Air, N/A — 6 Bolts - Hi-Perf.; Bolt Measurement: 7/16 - 20 x .6875"
• Fits 1976-1979 Chevrolet Monza, N/A — 6 Bolts - Hi-Perf.; Bolt Measurement: 7/16 - 20 x .6875"
• Fits 1969-1979 Chevrolet Nova, N/A — 6 Bolts - Hi-Perf.; Bolt Measurement: 7/16 - 20 x .6875"
• Fits 1978-1979 Oldsmobile Cutlass, N/A — 6 Bolts - Hi-Perf.; Bolt Measurement: 7/16 - 20 x .6875"
• Fits 1977-1979 Oldsmobile Omega, N/A — 6 Bolts - Hi-Perf.; Bolt Measurement: 7/16 - 20 x .6875"
• Fits 1978-1979 Pontiac Firebird, N/A — 6 Bolts - Hi-Perf.; Bolt Measurement: 7/16 - 20 x .6875"
• Fits 1976-1979 Pontiac Grand LeMans, N/A — 6 Bolts - Hi-Perf.; Bolt Measurement: 7/16 - 20 x .6875"
• Fits 1978-1979 Pontiac Laurentian, N/A — 6 Bolts - Hi-Perf.; Bolt Measurement: 7/16 - 20 x .6875"
• Fits 1976 Pontiac Laurentian, N/A — 6 Bolts - Hi-Perf.; Bolt Measurement: 7/16 - 20 x .6875"
• Fits 1976-1979 Pontiac LeMans, N/A — 6 Bolts - Hi-Perf.; Bolt Measurement: 7/16 - 20 x .6875"
• Fits 1978-1979 Pontiac Parisienne, N/A — 6 Bolts - Hi-Perf.; Bolt Measurement: 7/16 - 20 x .6875"
• Fits 1976 Pontiac Parisienne, N/A — 6 Bolts - Hi-Perf.; Bolt Measurement: 7/16 - 20 x .6875"
• Fits 1977-1979 Pontiac Phoenix, N/A — 6 Bolts - Hi-Perf.; Bolt Measurement: 7/16 - 20 x .6875"
• Fits 1978 Oldsmobile Cutlass Supreme, N/A — 6 Bolts - Hi-Perf.; Bolt Measurement: 7/16 - 20 x .6875"
• Fits 1977 Oldsmobile Custom Cruiser, N/A — 6 Bolts - Hi-Perf.; Bolt Measurement: 7/16 - 20 x .6875"
• Fits 1977 Oldsmobile Delta 88, N/A — 6 Bolts - Hi-Perf.; Bolt Measurement: 7/16 - 20 x .6875"

What It Helps Address

• Replacing worn or damaged flexplate mounting bolts during transmission service
• Matching the correct 7/16-20 thread specification for listed GM applications
• Restoring secure flexplate-to-crankshaft attachment on compatible vehicles
• Supporting repairs on Chevrolet Camaro, Corvette, and Impala automatic transmission setups
• Correcting hardware mismatch issues when the original bolt dimensions no longer match

Installation Notes

Verify the flexplate bolt pattern, thread diameter, and bolt measurement before installation. This part number 859022 is listed for 6-bolt high-performance applications with a 7/16-20 x .6875-inch bolt measurement, so confirm the vehicle’s original hardware specification before assembly. For Chevrolet Camaro, Corvette, and other listed GM models, compare the removed bolt to the replacement to ensure proper thread engagement and seating.

Quality Assurance

Pioneer Cables 859022 is cataloged as a transmission hardware component with defined dimensional specifications for fitment-based selection. Use the confirmed vehicle listing and bolt measurements to verify application before installation.