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Hays

Hays Heavy-Duty Flexplates

4.16 out of 5 stars 63 Customer Reviews

Hays heavy-duty flexplates for high performance and competition engines are constructed from a thicker-than-stock steel plate. This enables them to withstand the stress of high-stall torque converters and 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 flexplates can handle the force. These heavy-duty flexplates are supplied with a ring gear that is securely welded in place. All Hays heavy-duty flexplates are zinc-dichromate plated to resist corrosion and SFI-certified under specification 29.1.

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Hays Heavy-Duty 168-Tooth Flexplate 10-030

Hays Heavy-Duty 168-Tooth Flexplate 10-030

Hays Heavy-Duty 168-Tooth Flexplate 10-030

Flexplate, Heavy-Duty, Steel, Internal Balance, 168 Tooth, SFI 29.1, Chevy, Each

Part Number: HAY-10-030

4.38 out of 5 stars ( 8 )

Estimated Ship Date: Today

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Hays Heavy-Duty 168-Tooth Flexplate 10-010

Hays Heavy-Duty 168-Tooth Flexplate 10-010

Hays Heavy-Duty 168-Tooth Flexplate 10-010

Flexplate; Performance, Neutral Balance, 168 Tooth, Chevy, V8, Each

Part Number: HAY-10-010

4.5 out of 5 stars ( 12 )

Estimated Ship Date: Today

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Hays Heavy-Duty 168-Tooth Flexplate 40-508

Hays Heavy-Duty 168-Tooth Flexplate 40-508

Hays Heavy-Duty 168-Tooth Flexplate 40-508

Flexplates, Heavy-Duty, 168-tooth, Steel, SFI 29.1, Internal Engine Balance, One-piece Rear Main Seal, Chevrolet, Small Block LS, Each

Part Number: HAY-40-508

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Hays Heavy-Duty 184-Tooth Flexplate 12-049

Hays Heavy-Duty 184-Tooth Flexplate 12-049

Hays Heavy-Duty 184-Tooth Flexplate 12-049

SFI FLEXPLATE, FORD 57-UP 332-428, 429-460 BBF, 184T INT. BAL

Part Number: HAY-12-049

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Today

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Hays Heavy-Duty 164-Tooth Flexplate 12-030

Hays Heavy-Duty 164-Tooth Flexplate 12-030

Hays Heavy-Duty 164-Tooth Flexplate 12-030

Flexplate, Steel, 164-Tooth, External Balance, Ford, 289, 302, 351C, 351M, 351W, 400, Each

Part Number: HAY-12-030

3.75 out of 5 stars ( 4 )

Estimated Ship Date: Today

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Hays Heavy-Duty 164-Tooth Flexplate 12-060

Hays Heavy-Duty 164-Tooth Flexplate 12-060

Hays Heavy-Duty 164-Tooth Flexplate 12-060

Flexplate, 164-Tooth, Internal Engine Balance, SFI 29.1, Ford, Big Block 429/460, Each

Part Number: HAY-12-060

3.83 out of 5 stars ( 6 )

Estimated Ship Date: Today

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Hays Heavy-Duty 164-Tooth Flexplate 40-502

Hays Heavy-Duty 164-Tooth Flexplate 40-502

Hays Heavy-Duty 164-Tooth Flexplate 40-502

Flexplates, Heavy-Duty, 164-tooth, Steel, SFI 29.1, External, 28 oz. Imbalance, One-piece/2-piece Rear Main Seal, Ford, 4.7L, 5.0L, Each

Part Number: HAY-40-502

Not Yet Reviewed

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Hays Heavy-Duty Flexplates 40-518

Hays Heavy-Duty Flexplates 40-518

Hays Heavy-Duty Flexplates 40-518

Flexplate, Heavy-Duty, SFI 29.1, 0.105 in., Grade 80 Steel, Use with 7/16 in. Bolts, Mopar, Gen III Hemi to 727, 904, A500, A518, Each

Part Number: HAY-40-518

Not Yet Reviewed

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Hays Heavy-Duty 153-Tooth Flexplate 10-012

Hays Heavy-Duty 153-Tooth Flexplate 10-012

Hays Heavy-Duty 153-Tooth Flexplate 10-012

Flexplate, Performance, Neutral Balance,153 Tooth, Chevy, V8, Each

Part Number: HAY-10-012

Not Yet Reviewed

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Hays Heavy-Duty 168-Tooth Flexplate 10-026

Hays Heavy-Duty 168-Tooth Flexplate 10-026

Hays Heavy-Duty 168-Tooth Flexplate 10-026

Flexplate, Performance, External Balance, 168 Tooth, Chevy, 1991-97 Big Block, Each

Part Number: HAY-10-026

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Hays Heavy-Duty 184-Tooth Flexplate 12-050

Hays Heavy-Duty 184-Tooth Flexplate 12-050

Hays Heavy-Duty 184-Tooth Flexplate 12-050

Flexplate; Performance; Flexplate; Detroit (External) Balance; 184 Tooth;

Part Number: HAY-12-050

4.0 out of 5 stars ( 4 )

Estimated Ship Date: Today

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Hays Heavy-Duty 130-Tooth Flexplate 11-020

Hays Heavy-Duty 130-Tooth Flexplate 11-020

Hays Heavy-Duty 130-Tooth Flexplate 11-020

Flexplates, Heavy-Duty, 130-tooth, Steel, SFI 29.1, Internal Engine Balance, 2-piece Rear Main Seal Style, Chrysler, Dodge, Plymouth, Each

Part Number: HAY-11-020

Not Yet Reviewed

Estimated Ship Date: Today

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Hays Heavy-Duty 164-Tooth Flexplate 12-070

Hays Heavy-Duty 164-Tooth Flexplate 12-070

Hays Heavy-Duty 164-Tooth Flexplate 12-070

Flexplate, Heavy-Duty, Internal Balance, 164-Tooth, SFI 29.1, Ford, Modular, Each

Part Number: HAY-12-070

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Hays Heavy-Duty 166-Tooth Flexplate 13-065

Hays Heavy-Duty 166-Tooth Flexplate 13-065

Hays Heavy-Duty 166-Tooth Flexplate 13-065

Flexplate, Steel, 166-Tooth, Internal Engine Balance, Pontiac V8, Each

Part Number: HAY-13-065

3.4 out of 5 stars ( 5 )

Estimated Ship Date: Today

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Hays Heavy-Duty 164-Tooth Flexplate 12-055

Hays Heavy-Duty 164-Tooth Flexplate 12-055

Hays Heavy-Duty 164-Tooth Flexplate 12-055

Flexplate, Heavy-Duty, External Balance, 164-Tooth, SFI 29.1, Ford, 460, Each

Part Number: HAY-12-055

Not Yet Reviewed

Estimated Ship Date: Today

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Hays Heavy-Duty 166-Tooth Flexplate 14-010

Hays Heavy-Duty 166-Tooth Flexplate 14-010

Hays Heavy-Duty 166-Tooth Flexplate 14-010

Flexplate, Heavy-Duty, SFI 29.1, 166-Tooth, Steel, Zinc Dichromate Finish, Cadillac, V8, Each

Part Number: HAY-14-010

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Oct 7, 2025 if ordered today

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Estimated Ship Date: Oct 7, 2025 if ordered today

Hays Heavy-Duty 168-Tooth Flexplate 10-015

Hays Heavy-Duty 168-Tooth Flexplate 10-015

Hays Heavy-Duty 168-Tooth Flexplate 10-015

Flexplate, Performance, External Balance, 168 Tooth, Chevy, 400 Small Block, Each

Part Number: HAY-10-015

Not Yet Reviewed

Estimated Ship Date: Oct 7, 2025 if ordered today

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Estimated Ship Date: Oct 7, 2025 if ordered today

Hays Heavy-Duty 131-Tooth Flexplate 11-021

Hays Heavy-Duty 131-Tooth Flexplate 11-021

Hays Heavy-Duty 131-Tooth Flexplate 11-021

Flexplates, Heavy-Duty, 131-tooth, Steel, SFI 29.1, Internal Engine Balance, Will Not Fit 545 or 65RFE Transmissions, Chrysler, Dodge, Jeep, Ram, Each

Part Number: HAY-11-021

Not Yet Reviewed

Estimated Ship Date: Oct 7, 2025 if ordered today

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Estimated Ship Date: Oct 7, 2025 if ordered today

Hays Heavy-Duty 166-Tooth Flexplate 15-075

Hays Heavy-Duty 166-Tooth Flexplate 15-075

Hays Heavy-Duty 166-Tooth Flexplate 15-075

Flexplate; Performance; Flexplate; Detroit (External) Balance; 166 Tooth; 14.00 in. OD

Part Number: HAY-15-075

4.43 out of 5 stars ( 7 )

Estimated Ship Date: Today

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Hays Heavy-Duty 152-Tooth Flexplate 11-025

Hays Heavy-Duty 152-Tooth Flexplate 11-025

Hays Heavy-Duty 152-Tooth Flexplate 11-025

Flexplates, Heavy-Duty, 152-tooth, Steel, SFI 29.1, Internal Balance, One-piece Rear Main Seal, 2.120 in. Center Bore, Dodge, Ram, 6.7L Diesel, Each

Part Number: HAY-11-025

Not Yet Reviewed

Estimated Ship Date: Oct 7, 2025 if ordered today

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Estimated Ship Date: Oct 7, 2025 if ordered today

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