Manufactured from certified billet steel, these flywheels will not break under the stress of high RPM or the punishment of racing. Varying from 25 to 50 pounds based on application, most Hays flywheels are drilled with both the Borg & Beck and Long clutch patterns. All are precision-balanced to either Detroit (external) or neutral (internal) specifications (1.1 SFI-certified). Notes:

Flywheel thicker than stock; may require bellhousing spacing (Lakewood bellhousing will eliminate interference)

Possible interference between ring gear and bellhousing; may require dial indicating of bellhousing

Specifications:

Material

Steel

Engine Balance

Neutral

Engine Balance

Internal

Weight (lbs.)

40.0

Quantity

Sold individually

Replaceable Friction Surface

Ring Gear Tooth Quantity

184-tooth

Safety Rating

SFI 1.1

Flywheel Material

Billet steel

Manufacturer's Part Number:

12-240

High-Performance Flywheels for High-Performance Vehicles

Billet Steel Flywheels

Billet Aluminum Flywheels

Machined from 7075 T-6 forged billet aluminum, these flywheels weigh 11, 14, or 15 pounds and are popular among many road racers and drag racers running light cars with large motors. The high-strength alloy surpasses material specs regarding strength and centrifugal distortion. All feature a replaceable steel or bronze heat shield and are drilled to accept either the Borg & Beck or Long clutch pattern. Ring gears are securely mounted with welded tabs riveted to flywheels to prevent spinning. Balanced to Detroit (external) or neutral (internal) specifications (1.1 SFI-certified).

Billet Marine Flywheels

Available steel or aluminum based on application, these flywheels are designed for engines adapted to marine use and machined to the same standards as other Hays flywheels.

Application Chart

For JEGS part numbers, add 490- to the beginning of Hays part numbers. Click chart to enlarge.

Does Hays 12-240 fit your vehicle?

Narrow Results

Filter By
Year

Filter By
Make

FORD LINCOLN MERCURY

Filter By
Model

Filter By
SubModel

Filter By
EngineType

V8 ( 5.8 L / 352 ) V8 ( 6.4 L / 390 ) V8 ( 6.6 L / 400 ) V8 ( 6.6 L / 406 ) V8 ( 7.0 L / 427 ) V8 ( 7.0 L / 429 ) V8 ( 7.5 L / 460 )

Filter By
CC

5769 6391 6392 6555 6556 6654 6997 7030 7539

Filter By
Liter

5.8 6.4 6.6 7.0 7.5

Filter By
Aspiration

1965 MERCURY PARK LANE

Fitment_Note: Flywheel Thicker Than Stock May Require Bellhousing Spacer
EngineType: ALL
SubModel: ALL

1965 MERCURY VILLAGER

CC: 6997
Fitment_Note: Flywheel Thicker Than Stock May Require Bellhousing Spacer
Liter: 7.0
SubModel: BASE
CUI: 427
EngineType: V8 ( 7.0 L / 427 )

1968-1970 MERCURY MARQUIS

CC: 6391
Fitment_Note: Flywheel Thicker Than Stock May Require Bellhousing Spacer
Liter: 6.4
SubModel: BASE
CUI: 390
EngineType: V8 ( 6.4 L / 390 )

1978-1979 FORD BRONCO

Liter: 6.6
SubModel: CUSTOM
CUI: 400
EngineType: V8 ( 6.6 L / 400 )

1974 MERCURY MARQUIS

CC: 6555
Liter: 6.6
SubModel: BROUGHAM
CUI: 400
EngineType: V8 ( 6.6 L / 400 )

1978-1979 FORD BRONCO

Liter: 6.6
SubModel: RANGER XLT
CUI: 400
EngineType: V8 ( 6.6 L / 400 )

1977-1978 FORD F-350

Liter: 6.6
SubModel: BASE
CUI: 400
EngineType: V8 ( 6.6 L / 400 )

1966-1967 MERCURY MONTCLAIR

CC: 6997
Fitment_Note: Flywheel Thicker Than Stock May Require Bellhousing Spacer
Liter: 7.0
SubModel: BASE
CUI: 427
EngineType: V8 ( 7.0 L / 427 )

1975-1978 FORD LTD

Liter: 6.6
SubModel: LANDAU
CUI: 400
EngineType: V8 ( 6.6 L / 400 )

1979 FORD F-100

Liter: 7.5
SubModel: RANGER
CUI: 460
EngineType: V8 ( 7.5 L / 460 )

1977 FORD F-350

Liter: 7.5
SubModel: XLT
CUI: 460
EngineType: V8 ( 7.5 L / 460 )

1983-1996 FORD E-350 ECONOLINE

Liter: 7.5
SubModel: XL
CUI: 460
EngineType: V8 ( 7.5 L / 460 )

1975-1978 FORD E-250 ECONOLINE

Liter: 7.5
SubModel: NORTHLAND
CUI: 460
EngineType: V8 ( 7.5 L / 460 )

1975-1979 FORD F-350

Liter: 7.5
SubModel: RANGER XLT
CUI: 460
EngineType: V8 ( 7.5 L / 460 )

1971-1972 FORD CUSTOM

CC: 6556
Liter: 6.6
SubModel: BASE
CUI: 400
EngineType: V8 ( 6.6 L / 400 )

1983-1986 FORD F-350

Liter: 7.5
SubModel: BASE
CUI: 460
EngineType: V8 ( 7.5 L / 460 )

1976 MERCURY MONTEGO

Liter: 7.5
SubModel: BASE
CUI: 460
EngineType: V8 ( 7.5 L / 460 )

1977-1979 LINCOLN MARK V

EngineType: ALL
SubModel: ALL

1977-1978 FORD LTD II

Liter: 6.6
SubModel: BASE
CUI: 400
EngineType: V8 ( 6.6 L / 400 )

1994-1996 FORD E-350 ECONOLINE CLUB WAGON

Liter: 7.5
SubModel: XL HD
CUI: 460
EngineType: V8 ( 7.5 L / 460 )

1978-1979 FORD F-150

Liter: 7.5
SubModel: RANGER LARIAT
CUI: 460
EngineType: V8 ( 7.5 L / 460 )

1966 FORD FAIRLANE

Fitment_Note: Flywheel Thicker Than Stock May Require Bellhousing Spacer
Liter: 6.4
SubModel: 500XL
CUI: 390
EngineType: V8 ( 6.4 L / 390 )

1992-1996 FORD E-350 ECONOLINE CLUB WAGON

Liter: 7.5
SubModel: CHATEAU HD
CUI: 460
EngineType: V8 ( 7.5 L / 460 )

1965-1966 FORD FAIRLANE

Fitment_Note: Flywheel Thicker Than Stock May Require Bellhousing Spacer
Liter: 6.4
SubModel: 500
CUI: 390
EngineType: V8 ( 6.4 L / 390 )

1973 MERCURY COUGAR

CC: 6555
Liter: 6.6
SubModel: BASE
CUI: 400
EngineType: V8 ( 6.6 L / 400 )

1968 FORD RANCH WAGON

CC: 6391
Fitment_Note: Flywheel Thicker Than Stock May Require Bellhousing Spacer
Liter: 6.4
Aspiration: N
SubModel: BASE
Engine Vin: Y
CUI: 390
EngineType: V8 ( 6.4 L / 390 )

1975-1983 FORD E-350 ECONOLINE

Liter: 7.5
SubModel: CUSTOM
CUI: 460
EngineType: V8 ( 7.5 L / 460 )

1975-1982 FORD E-250 ECONOLINE CLUB WAGON

Liter: 7.5
SubModel: BASE
CUI: 460
EngineType: V8 ( 7.5 L / 460 )

1977-1978 FORD LTD II

Liter: 6.6
SubModel: BROUGHAM
CUI: 400
EngineType: V8 ( 6.6 L / 400 )

1982 FORD F-350

Liter: 6.6
SubModel: XL
CUI: 400
EngineType: V8 ( 6.6 L / 400 )

1969-1972 FORD CUSTOM

CC: 7030
Liter: 7.0
SubModel: BASE
CUI: 429
EngineType: V8 ( 7.0 L / 429 )

1977-1982 FORD E-350 ECONOLINE CLUB WAGON

Liter: 7.5
SubModel: BASE
CUI: 460
EngineType: V8 ( 7.5 L / 460 )

1965 MERCURY CALIENTE

CC: 6997
Fitment_Note: Flywheel Thicker Than Stock May Require Bellhousing Spacer
Liter: 7.0
SubModel: BASE
CUI: 427
EngineType: V8 ( 7.0 L / 427 )

1987-1992 FORD F-350

Liter: 7.5
SubModel: CUSTOM
CUI: 460
EngineType: V8 ( 7.5 L / 460 )

1975-1976 MERCURY MONTEGO

Liter: 7.5
SubModel: MX
CUI: 460
EngineType: V8 ( 7.5 L / 460 )

1970 MERCURY COMET

CC: 7030
Liter: 7.0
SubModel: BASE
CUI: 429
EngineType: V8 ( 7.0 L / 429 )

1969 FORD TORINO

CC: 6391
Fitment_Note: Flywheel Thicker Than Stock May Require Bellhousing Spacer
Liter: 6.4
SubModel: SQUIRE
CUI: 390
EngineType: V8 ( 6.4 L / 390 )

1962-1963 FORD RANCH WAGON

CC: 6654
Liter: 6.6
SubModel: BASE
CUI: 406
EngineType: V8 ( 6.6 L / 406 )

1991-1996 FORD E-350 ECONOLINE CLUB WAGON

Liter: 7.5
SubModel: XLT
CUI: 460
EngineType: V8 ( 7.5 L / 460 )

1975-1979 FORD F-150

Liter: 7.5
SubModel: RANGER XLT
CUI: 460
EngineType: V8 ( 7.5 L / 460 )

1967 FORD FAIRLANE

Fitment_Note: Flywheel Thicker Than Stock May Require Bellhousing Spacer
Liter: 6.4
SubModel: 500XL
CUI: 390
EngineType: V8 ( 6.4 L / 390 )

1977-1983 FORD E-350 ECONOLINE CLUB WAGON

Liter: 7.5
SubModel: CUSTOM
CUI: 460
EngineType: V8 ( 7.5 L / 460 )

1968-1970 FORD FAIRLANE

CC: 6391
Fitment_Note: Flywheel Thicker Than Stock May Require Bellhousing Spacer
Liter: 6.4
SubModel: 500
CUI: 390
EngineType: V8 ( 6.4 L / 390 )

1968 MERCURY COUGAR

CC: 6997
Fitment_Note: Flywheel Thicker Than Stock May Require Bellhousing Spacer
Liter: 7.0
SubModel: BASE
CUI: 427
EngineType: V8 ( 7.0 L / 427 )

1969-1979 LINCOLN CONTINENTAL

EngineType: ALL
SubModel: ALL

1973-1974 MERCURY COUGAR

CC: 6556
Liter: 6.6
SubModel: XR-7
CUI: 400
EngineType: V8 ( 6.6 L / 400 )

1983-1986 FORD F-250

Liter: 7.5
SubModel: BASE
CUI: 460
EngineType: V8 ( 7.5 L / 460 )

1968 FORD RANCH WAGON

CC: 6391
Fitment_Note: Flywheel Thicker Than Stock May Require Bellhousing Spacer
Liter: 6.4
SubModel: BASE
CUI: 390
EngineType: V8 ( 6.4 L / 390 )

1973-1974 MERCURY MONTEGO

CC: 7539
Liter: 7.5
SubModel: MX BROUGHAM
CUI: 460
EngineType: V8 ( 7.5 L / 460 )

1980-1982 FORD E-350 ECONOLINE CLUB WAGON

Liter: 6.6
SubModel: BASE
CUI: 400
EngineType: V8 ( 6.6 L / 400 )

1973-1974 FORD TORINO

CC: 7539
Liter: 7.5
SubModel: BASE
CUI: 460
EngineType: V8 ( 7.5 L / 460 )

1968 FORD GALAXIE 500

CC: 6997
Fitment_Note: Flywheel Thicker Than Stock May Require Bellhousing Spacer
Liter: 7.0
SubModel: BASE
CUI: 427
EngineType: V8 ( 7.0 L / 427 )

1992-1996 FORD E-350 ECONOLINE

Liter: 7.5
SubModel: BASE
CUI: 460
EngineType: V8 ( 7.5 L / 460 )

1972-1978 FORD RANCHERO

Liter: 6.6
SubModel: 500
CUI: 400
EngineType: V8 ( 6.6 L / 400 )

1971 MERCURY COUGAR

CC: 7030
Liter: 7.0
SubModel: BASE
CUI: 429
EngineType: V8 ( 7.0 L / 429 )

1977 FORD LTD II

Liter: 6.6
SubModel: SQUIRE
CUI: 400
EngineType: V8 ( 6.6 L / 400 )

1962-1963 MERCURY MONTEREY

CC: 6654
Liter: 6.6
SubModel: BASE
CUI: 406
EngineType: V8 ( 6.6 L / 406 )

1993-1997 FORD F-350

Liter: 7.5
SubModel: XLT
CUI: 460
EngineType: V8 ( 7.5 L / 460 )

1976 MERCURY MONTEGO

Liter: 6.6
SubModel: MX VILLAGER
CUI: 400
EngineType: V8 ( 6.6 L / 400 )

1971-1977 FORD CUSTOM 500

CC: 6556
Liter: 6.6
SubModel: BASE
CUI: 400
EngineType: V8 ( 6.6 L / 400 )

1974-1977 FORD RANCHERO

Liter: 7.5
SubModel: GT
CUI: 460
EngineType: V8 ( 7.5 L / 460 )

1984-1986 FORD E-350 ECONOLINE CLUB WAGON

Liter: 7.5
SubModel: BASE
CUI: 460
EngineType: V8 ( 7.5 L / 460 )

1980 FORD E-100 ECONOLINE

Liter: 6.6
SubModel: CHATEAU
CUI: 400
EngineType: V8 ( 6.6 L / 400 )

1969-1973 MERCURY COLONY PARK

CC: 7030
Liter: 7.0
SubModel: BASE
CUI: 429
EngineType: V8 ( 7.0 L / 429 )

1970-1971 FORD LTD

CC: 6391
Fitment_Note: Flywheel Thicker Than Stock May Require Bellhousing Spacer
Liter: 6.4
SubModel: BASE
CUI: 390
EngineType: V8 ( 6.4 L / 390 )

1969-1971 LINCOLN MARK III

EngineType: ALL
SubModel: ALL

1977-1978 FORD F-350

Liter: 6.6
SubModel: NORTHLAND
CUI: 400
EngineType: V8 ( 6.6 L / 400 )

1976 MERCURY MONTEGO

Liter: 7.5
SubModel: MX BROUGHAM
CUI: 460
EngineType: V8 ( 7.5 L / 460 )

1968-1972 FORD F-250

CC: 6392
Fitment_Note: Flywheel Thicker Than Stock May Require Bellhousing Spacer
Liter: 6.4
SubModel: BASE
CUI: 390
EngineType: V8 ( 6.4 L / 390 )

1977-1978 FORD LTD II

Liter: 6.6
SubModel: S
CUI: 400
EngineType: V8 ( 6.6 L / 400 )

1978 FORD E-100 ECONOLINE

Liter: 7.5
SubModel: NORTHLAND
CUI: 460
EngineType: V8 ( 7.5 L / 460 )

1978 FORD THUNDERBIRD

Liter: 6.6
SubModel: DIAMOND JUBILEE
CUI: 400
EngineType: V8 ( 6.6 L / 400 )

1968-1969 FORD THUNDERBIRD

CC: 7030
Liter: 7.0
SubModel: BASE
CUI: 429
EngineType: V8 ( 7.0 L / 429 )

1966-1968 MERCURY COMMUTER

CC: 6391
Fitment_Note: Flywheel Thicker Than Stock May Require Bellhousing Spacer
Liter: 6.4
SubModel: BASE
CUI: 390
EngineType: V8 ( 6.4 L / 390 )

1975-1976 FORD THUNDERBIRD

EngineType: ALL
SubModel: ALL

1962-1963 MERCURY COLONY PARK

CC: 6654
Liter: 6.6
SubModel: BASE
CUI: 406
EngineType: V8 ( 6.6 L / 406 )

1965-1967 FORD RANCH WAGON

CC: 6997
Fitment_Note: Flywheel Thicker Than Stock May Require Bellhousing Spacer
Liter: 7.0
SubModel: BASE
CUI: 427
EngineType: V8 ( 7.0 L / 427 )

1974 FORD GRAN TORINO

CC: 7539
Liter: 7.5
SubModel: SPORT
CUI: 460
EngineType: V8 ( 7.5 L / 460 )

1977-1978 FORD F-100

Liter: 6.6
SubModel: BASE
CUI: 400
EngineType: V8 ( 6.6 L / 400 )

1965-1967 FORD COUNTRY SQUIRE

CC: 5769
Fitment_Note: Flywheel Thicker Than Stock May Require Bellhousing Spacer
Liter: 5.8
SubModel: BASE
CUI: 352
EngineType: V8 ( 5.8 L / 352 )

1977-1981 FORD F-250

Liter: 6.6
SubModel: RANGER
CUI: 400
EngineType: V8 ( 6.6 L / 400 )

1969-1973 MERCURY MARQUIS

CC: 7030
Liter: 7.0
SubModel: BASE
CUI: 429
EngineType: V8 ( 7.0 L / 429 )

1978 FORD E-100 ECONOLINE

Liter: 7.5
SubModel: CHATEAU
CUI: 460
EngineType: V8 ( 7.5 L / 460 )

1965-1966 FORD FAIRLANE

CC: 6997
Fitment_Note: Flywheel Thicker Than Stock May Require Bellhousing Spacer
Liter: 7.0
SubModel: BASE
CUI: 427
EngineType: V8 ( 7.0 L / 427 )

1977-1979 FORD F-100

Liter: 6.6
SubModel: RANGER XLT
CUI: 400
EngineType: V8 ( 6.6 L / 400 )

1965-1966 FORD GALAXIE

CC: 5769
Fitment_Note: Flywheel Thicker Than Stock May Require Bellhousing Spacer
Liter: 5.8
SubModel: BASE
CUI: 352
EngineType: V8 ( 5.8 L / 352 )

1971 MERCURY CYCLONE

CC: 6555
Liter: 6.6
SubModel: BASE
CUI: 400
EngineType: V8 ( 6.6 L / 400 )

1966-1967 MERCURY MARAUDER

CC: 6391
Fitment_Note: Flywheel Thicker Than Stock May Require Bellhousing Spacer
Liter: 6.4
SubModel: BASE
CUI: 390
EngineType: V8 ( 6.4 L / 390 )

1975-1977 FORD CUSTOM 500

EngineType: ALL
SubModel: RANCH WAGON

1968 LINCOLN CONTINENTAL

CC: 7539
Liter: 7.5
SubModel: BASE
CUI: 460
EngineType: V8 ( 7.5 L / 460 )

1969 MERCURY CYCLONE

CC: 7030
Liter: 7.0
SubModel: CJ
CUI: 429
EngineType: V8 ( 7.0 L / 429 )

1982 FORD F-250

Liter: 6.6
SubModel: XLS
CUI: 400
EngineType: V8 ( 6.6 L / 400 )

1966-1967 FORD F-350

CC: 5769
Fitment_Note: Flywheel Thicker Than Stock May Require Bellhousing Spacer
Liter: 5.8
SubModel: BASE
CUI: 352
EngineType: V8 ( 5.8 L / 352 )

1972 FORD RANCHERO

CC: 7030
Liter: 7.0
SubModel: 500
CUI: 429
EngineType: V8 ( 7.0 L / 429 )

1966 MERCURY MONTEREY

CC: 6997
Fitment_Note: Flywheel Thicker Than Stock May Require Bellhousing Spacer
Liter: 7.0
SubModel: S-55
CUI: 427
EngineType: V8 ( 7.0 L / 427 )

1972-1974 MERCURY MONTEGO

CC: 6556
Liter: 6.6
SubModel: VILLAGER
CUI: 400
EngineType: V8 ( 6.6 L / 400 )

1980-1982 FORD E-350 ECONOLINE CLUB WAGON

Liter: 6.6
SubModel: CUSTOM
CUI: 400
EngineType: V8 ( 6.6 L / 400 )

1968-1969 FORD TORINO

CC: 6391
Fitment_Note: Flywheel Thicker Than Stock May Require Bellhousing Spacer
Liter: 6.4
SubModel: GT
CUI: 390
EngineType: V8 ( 6.4 L / 390 )

1972 FORD GALAXIE 500

CC: 7539
Liter: 7.5
SubModel: BASE
CUI: 460
EngineType: V8 ( 7.5 L / 460 )

1975-1982 FORD E-350 ECONOLINE

Liter: 7.5
SubModel: CHATEAU
CUI: 460
EngineType: V8 ( 7.5 L / 460 )

1 2 ... 6 >

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Hays 12-240

Billet Steel 184-Tooth Flywheel Ford 352, 390, 427, 428, 429, 460

Part Number: 490-12-240

Hays 12-240 Details

Specifications:

Does Hays 12-240 fit your vehicle?

1965 MERCURY PARK LANE

1965 MERCURY VILLAGER

1968-1970 MERCURY MARQUIS

1978-1979 FORD BRONCO

1974 MERCURY MARQUIS

1978-1979 FORD BRONCO

1977-1978 FORD F-350

1966-1967 MERCURY MONTCLAIR

1975-1978 FORD LTD

1979 FORD F-100

1977 FORD F-350

1983-1996 FORD E-350 ECONOLINE

1975-1978 FORD E-250 ECONOLINE

1975-1979 FORD F-350

1971-1972 FORD CUSTOM

1983-1986 FORD F-350

1976 MERCURY MONTEGO

1977-1979 LINCOLN MARK V

1977-1978 FORD LTD II

1994-1996 FORD E-350 ECONOLINE CLUB WAGON

1978-1979 FORD F-150

1966 FORD FAIRLANE

1992-1996 FORD E-350 ECONOLINE CLUB WAGON

1965-1966 FORD FAIRLANE

1973 MERCURY COUGAR

1968 FORD RANCH WAGON

1975-1983 FORD E-350 ECONOLINE

1975-1982 FORD E-250 ECONOLINE CLUB WAGON

1977-1978 FORD LTD II

1982 FORD F-350

1969-1972 FORD CUSTOM

1977-1982 FORD E-350 ECONOLINE CLUB WAGON

1965 MERCURY CALIENTE

1987-1992 FORD F-350

1975-1976 MERCURY MONTEGO

1970 MERCURY COMET

1969 FORD TORINO

1962-1963 FORD RANCH WAGON

1991-1996 FORD E-350 ECONOLINE CLUB WAGON

1975-1979 FORD F-150

1967 FORD FAIRLANE

1977-1983 FORD E-350 ECONOLINE CLUB WAGON

1968-1970 FORD FAIRLANE

1968 MERCURY COUGAR

1969-1979 LINCOLN CONTINENTAL

1973-1974 MERCURY COUGAR

1983-1986 FORD F-250

1968 FORD RANCH WAGON

1973-1974 MERCURY MONTEGO

1980-1982 FORD E-350 ECONOLINE CLUB WAGON

1973-1974 FORD TORINO

1968 FORD GALAXIE 500

1992-1996 FORD E-350 ECONOLINE

1972-1978 FORD RANCHERO

1971 MERCURY COUGAR

1977 FORD LTD II

1962-1963 MERCURY MONTEREY

1993-1997 FORD F-350

1976 MERCURY MONTEGO

1971-1977 FORD CUSTOM 500

1974-1977 FORD RANCHERO

1984-1986 FORD E-350 ECONOLINE CLUB WAGON

1980 FORD E-100 ECONOLINE

1969-1973 MERCURY COLONY PARK

1970-1971 FORD LTD

1969-1971 LINCOLN MARK III

1977-1978 FORD F-350

1976 MERCURY MONTEGO

1968-1972 FORD F-250

1977-1978 FORD LTD II

1978 FORD E-100 ECONOLINE