STEEL 184 TOOTH EXTERNAL BALANCE FLEXPLATE FORD 66-70 427/428FE, 429/460 Big Block Ford

Hays Steel 184 Tooth External Balanced SFI 29.1 Flexplate for Ford 66-70 427/428FE, 429-460 Big Block Ford

PART# 12-050

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Hays heavy-duty flexplates for high performance and competition engines are constructed of a thicker than stock steel plate, enabling them to withstand the stress of high-stall torque converters and today's high-RPM engines. While factory stock plates tend to crack around the crankshaft hub when punished under high torque and RPM conditions, the thicker Hays Flexplate handles the force. These H.D. flexplates are supplied with a ring gear that is securely welded in place and feature dual bolt patterns for flexibility in adapting to multiple transmission style torque converters. All Hays heavy-duty flexplates are zinc-dichromate plated to resist corrosion and are SFI certified under specification 29.1.


  • All applications for flexplates are SFI 29.1 Certified
  • Available in Externally and Internally Balanced options
  • Most flexplates feature Zinc Dichromate Plated finish for superior corrosion resistance and good looks
  • Heavy- Duty design utilized thicker than stock steel plate enabling to withstand the stress of high-stall converters and high-RPM engines
  • More applications now available for Buick, Cadillac, Chevy, Ford, Mopar, Oldsmobile and Pontiac Engine applications
  • Gas and Diesel Truck applications coming soon!


# of Teeth184
Center Bore (Register Diameter)2.500"
Engine BalanceExternal
Product TypeFlexplate
SFI Certification29.1
Warranty90 Day
Part Number12-050

Warranty Information

90 Day: See Details

    *Free Shipping & Handling only offered to the contiguous US on orders over $100.

    Some parts are not legal for use in California or other states with similar regulations.