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Fluidampr 720121

Harmonic Damper 1966-72 Big Block 396-427 Engines



Fluidampr 720121

Part Number: 388-720121

Harmonic Damper
  • 1966-72 Big Block 396-427 Engines
  • Diameter: 7-1/4" O.D.
  • Weight: 12.7 lbs
  • Internal Balance
  • Single 3/16" Key
  • $412.99

    Ships
    from Manufacturer
    Made In USA
    FREE Shipping
    Fluidampr 720121 Harmonic Damper 1966-72 Big Block 396-427 Engines $412.99

    Fluidampr 720121 Details

    Chevy Harmonic Dampers

    Note: Uses OEM timing pointer.

    Specifications:

    Material
    Steel
    Position
    N/A
    Mounting Hardware Included
    No
    Finish
    Black Zinc
    Engine Balance
    Internal
    Bore Dia. Min/Max
    1.599 / 1.600
    Degree Markings
    Yes
    Degree Marking Range
    50 BTDC to 10 ATDC. Additional timing/
    Safety Rating
    SFI 18.1
    Mounting Hardware Incl.
    No
    Length
    2.685
    O.D.
    7-1/4" (7.250)
    WT. in lbs.()=Rotating weight
    12.7 (8.5 Rwt)
    Keyway
    Single 3/16"
    Harmonic Balancer Construction
    Fluid
    Harmonic Balancer Finish
    Black zinc chromate
    Harmonic Balancer Material
    Steel
    Quantity
    Sold individually
    Outside Diameter (in.)
    7.25
    Manufacturer's Part Number:
    720121

    Stop that silent thief of power loss!

    You can't feel them or hear them, but harmonic vibrations are at work inside EVERY internal combustion engine. That's not good. Similar to glass-shattering forces created by a high pitched note, harmonic vibrations cause metal fatigue and can cause significant power loss because crankshaft harmonics are transmitted to the camshaft and valvetrain. Control this power-robbing force with a Fluidampr harmonic damper that uses race proven vibration damping technology. A high viscosity silicone fluid surrounds a nylon-coated inertia ring inside a laser welded housing. All dampers are coated with a black zinc chromate finish for increased corrosion resistance. Timing marks - every two degrees from 50 degrees BTDC to 10 degrees ATDC with additional marks at 90, 180 and 270. Meets SFI 18.1 specs. Made In The USA.

    These Fluidampr replacement hubs are designed to fit your existing Fluidampr harmonic balancer. They are made of steel or aluminum and have different finishes, depending on your engine's application.

    Does Fluidampr 720121 fit your vehicle?

    Narrow Results

    1970 CHEVROLET CHEVELLE

    • Liter: 6.6
    • EngineType: V8
    • SubModel: CONCOURS

    1971 CHEVROLET IMPALA

    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8

    1968-1969 CHEVROLET EL CAMINO

    • EngineType: ALL
    • SubModel: SS

    1966-1969 CHEVROLET IMPALA

    • CC: 6998
    • Liter: 7.0
    • SubModel: BASE
    • CUI: 427
    • EngineType: V8

    1972 CHEVROLET K10 SUBURBAN

    • Liter: 6.6
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: E
    • CUI: 402
    • EngineType: V8

    1967-1969 CHEVROLET CAMARO

    • Liter: 6.5
    • EngineType: V8
    • SubModel: SS

    1972 CHEVROLET CHEVELLE

    • Liter: 6.6
    • EngineType: V8
    • SubModel: MALIBU

    1970 CHEVROLET CHEVELLE

    • Liter: 6.6
    • EngineType: V8
    • SubModel: MALIBU

    1972 CHEVROLET CHEVELLE

    • Liter: 6.6
    • EngineType: V8
    • SubModel: CONCOURS ESTATE

    1965-1969 CHEVROLET BISCAYNE

    • Liter: 6.5
    • SubModel: BASE
    • CUI: 396
    • EngineType: V8

    1970 CHEVROLET CHEVELLE

    • Liter: 6.6
    • EngineType: V8
    • SubModel: NOMAD

    1971 CHEVROLET BISCAYNE

    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8

    1971 CHEVROLET BEL AIR

    • Liter: 6.6
    • SubModel: BASE
    • CUI: 402
    • EngineType: V8

    1972 CHEVROLET P30 VAN

    • Liter: 6.6
    • EngineType: V8
    • SubModel: BASE

    1971 CHEVROLET BEL AIR

    • CC: 6555
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8

    1967-1969 CHEVROLET CAMARO

    • Liter: 6.5
    • EngineType: V8
    • SubModel: BASE

    1972 CHEVROLET BEL AIR

    • Liter: 6.6
    • EngineType: V8
    • SubModel: BASE

    1968-1969 CHEVROLET CAPRICE

    • CC: 6489
    • Liter: 6.5
    • SubModel: BASE
    • CUI: 396
    • EngineType: V8

    1965 CHEVROLET CORVETTE

    • Liter: 6.5
    • SubModel: BASE
    • CUI: 396
    • EngineType: V8

    1972 CHEVROLET IMPALA

    • Liter: 6.6
    • EngineType: V8
    • SubModel: BASE

    1968 CHEVROLET CHEVELLE

    • Liter: 6.5
    • EngineType: V8
    • SubModel: 300

    1971 CHEVROLET IMPALA

    • CC: 6556
    • Liter: 6.6
    • SubModel: BASE
    • EngineType: V8

    1971 CHEVROLET CAPRICE

    • Liter: 6.6
    • SubModel: BASE
    • CUI: 402
    • EngineType: V8

    1965-1969 CHEVROLET CHEVELLE

    • Liter: 6.5
    • EngineType: V8
    • SubModel: SS

    1968-1969 CHEVROLET BISCAYNE

    • CC: 6998
    • Liter: 7.0
    • SubModel: BASE
    • CUI: 427
    • EngineType: V8

    1967 CHEVROLET CAMARO

    • Liter: 6.5
    • EngineType: V8
    • SubModel: RS

    1968-1969 CHEVROLET CAPRICE

    • CC: 6998
    • Liter: 7.0
    • SubModel: BASE
    • CUI: 427
    • EngineType: V8

    1971 CHEVROLET IMPALA

    • Liter: 6.6
    • SubModel: BASE
    • CUI: 402
    • EngineType: V8

    1963 CHEVROLET BISCAYNE

    • Liter: 7.0
    • SubModel: BASE
    • CUI: 427
    • EngineType: V8

    1970 CHEVROLET EL CAMINO

    • Liter: 6.5
    • EngineType: V8
    • SubModel: BASE

    1971 CHEVROLET BEL AIR

    • CC: 6556
    • Liter: 6.6
    • SubModel: BASE
    • EngineType: V8

    1971 CHEVROLET CAPRICE

    • CC: 6556
    • Liter: 6.6
    • SubModel: BASE
    • EngineType: V8

    1967 CHEVROLET CHEVELLE

    • Liter: 6.5
    • EngineType: V8
    • SubModel: DELUXE

    1971 CHEVROLET BEL AIR

    • CC: 6588
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 402
    • EngineType: V8

    1968-1969 CHEVROLET BEL AIR

    • CC: 6998
    • Liter: 7.0
    • SubModel: BASE
    • CUI: 427
    • EngineType: V8

    1970 CHEVROLET CHEVELLE

    • Liter: 6.6
    • EngineType: V8
    • SubModel: BASE

    1968-1969 CHEVROLET EL CAMINO

    • CC: 6489
    • Liter: 6.5
    • SubModel: BASE
    • CUI: 396
    • EngineType: V8

    1966-1967 CHEVROLET IMPALA

    • Liter: 6.5
    • EngineType: V8
    • SubModel: SS

    1970 CHEVROLET CHEVELLE

    • Liter: 6.6
    • EngineType: V8
    • SubModel: SS

    1971 CHEVROLET BISCAYNE

    • Liter: 6.6
    • SubModel: BASE
    • CUI: 402
    • EngineType: V8

    1967-1969 CHEVROLET CHEVELLE

    • Liter: 6.5
    • EngineType: V8
    • SubModel: CONCOURS

    1971 CHEVROLET IMPALA

    • CC: 6588
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 402
    • EngineType: V8

    1972 CHEVROLET C20 SUBURBAN

    • Liter: 6.6
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: U
    • CUI: 402
    • EngineType: V8

    1968-1969 CHEVROLET CHEVELLE

    • Liter: 6.5
    • EngineType: V8
    • SubModel: 300 DELUXE

    1966 CHEVROLET CORVETTE

    • Liter: 7.0
    • SubModel: BASE
    • CUI: 427
    • EngineType: V8

    1972 CHEVROLET CHEVELLE

    • CC: 6588
    • Liter: 6.6
    • SubModel: BASE
    • EngineType: V8

    1968-1969 CHEVROLET BISCAYNE

    • CC: 6489
    • Liter: 6.5
    • SubModel: BASE
    • CUI: 396
    • EngineType: V8

    1971 CHEVROLET BISCAYNE

    • CC: 6555
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8

    1967 CHEVROLET CHEVELLE

    • Liter: 6.5
    • EngineType: V8
    • SubModel: BASE

    1968-1969 CHEVROLET EL CAMINO

    • CC: 6489
    • Liter: 6.5
    • SubModel: CUSTOM
    • CUI: 396
    • EngineType: V8

    1970-1972 CHEVROLET EL CAMINO

    • Liter: 6.6
    • EngineType: V8
    • SubModel: CUSTOM

    1971 CHEVROLET BISCAYNE

    • CC: 6588
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 402
    • EngineType: V8

    1969 CHEVROLET CAMARO

    • Liter: 7.0
    • EngineType: V8
    • SubModel: BASE

    1972 CHEVROLET CHEVELLE

    • Liter: 6.6
    • EngineType: V8
    • SubModel: CONCOURS

    1970 CHEVROLET CHEVELLE

    • Liter: 6.6
    • EngineType: V8
    • SubModel: CONCOURS ESTATE

    1971 CHEVROLET BEL AIR

    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8

    1970-1972 CHEVROLET CAMARO

    • Liter: 6.6
    • EngineType: V8
    • SubModel: SS

    1963 CHEVROLET IMPALA

    • Liter: 7.0
    • SubModel: BASE
    • CUI: 427
    • EngineType: V8

    1972 CHEVROLET C10 PICKUP

    • Liter: 6.6
    • SubModel: BASE
    • CUI: 402
    • EngineType: V8

    1971 CHEVROLET IMPALA

    • CC: 6555
    • Liter: 6.6
    • SubModel: BASE
    • EngineType: V8

    1969 CHEVROLET CAMARO

    • Liter: 7.0
    • EngineType: V8
    • SubModel: RS

    1966-1969 CHEVROLET BISCAYNE

    • Liter: 7.0
    • SubModel: BASE
    • CUI: 427
    • EngineType: V8

    1966-1969 CHEVROLET CAPRICE

    • Liter: 7.0
    • SubModel: BASE
    • CUI: 427
    • EngineType: V8

    1968-1969 CHEVROLET CORVETTE

    • Liter: 7.0
    • SubModel: BASE
    • CUI: 427
    • EngineType: V8

    1969 CHEVROLET CHEVELLE

    • Liter: 6.5
    • EngineType: V8
    • SubModel: GREENBRIER

    1971 CHEVROLET CAPRICE

    • CC: 6588
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 402
    • EngineType: V8

    1968-1969 CHEVROLET IMPALA

    • Liter: 7.0
    • SubModel: BASE
    • CUI: 427
    • EngineType: V8

    1970-1972 CHEVROLET CAMARO

    • Liter: 6.6
    • EngineType: V8
    • SubModel: BASE

    1972 CHEVROLET C10 SUBURBAN

    • Liter: 6.6
    • SubModel: BASE
    • CUI: 402
    • EngineType: V8

    1972 CHEVROLET CHEVELLE

    • Liter: 6.6
    • EngineType: V8
    • SubModel: SS

    1972 CHEVROLET CHEVELLE

    • Liter: 6.6
    • SubModel: BASE
    • CUI: 402
    • EngineType: V8

    1966-1967 CHEVROLET EL CAMINO

    • Liter: 6.5
    • EngineType: V8
    • SubModel: BASE

    1969 CHEVROLET TOWNSMAN

    • CC: 6998
    • Liter: 7.0
    • SubModel: BASE
    • CUI: 427
    • EngineType: V8

    1971 CHEVROLET CAPRICE

    • CC: 6555
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8

    1968-1969 CHEVROLET CHEVELLE

    • Liter: 6.5
    • EngineType: V8
    • SubModel: NOMAD

    1965-1969 CHEVROLET BEL AIR

    • Liter: 6.5
    • SubModel: BASE
    • CUI: 396
    • EngineType: V8

    1968-1969 CHEVROLET BEL AIR

    • CC: 6489
    • Liter: 6.5
    • SubModel: BASE
    • CUI: 396
    • EngineType: V8

    1971 CHEVROLET BISCAYNE

    • CC: 6556
    • Liter: 6.6
    • SubModel: BASE
    • EngineType: V8

    1966-1969 CHEVROLET IMPALA

    • CC: 6489
    • Liter: 6.5
    • SubModel: BASE
    • CUI: 396
    • EngineType: V8

    1966-1969 CHEVROLET BEL AIR

    • Liter: 7.0
    • SubModel: BASE
    • CUI: 427
    • EngineType: V8

    1968-1969 CHEVROLET IMPALA

    • Liter: 6.5
    • SubModel: BASE
    • CUI: 396
    • EngineType: V8

    1969 CHEVROLET BROOKWOOD

    • CC: 6998
    • Liter: 7.0
    • SubModel: BASE
    • CUI: 427
    • EngineType: V8

    1969 CHEVROLET KINGSWOOD

    • Liter: 7.0
    • EngineType: V8
    • SubModel: ESTATE

    1972 CHEVROLET CAPRICE

    • Liter: 6.6
    • EngineType: V8
    • SubModel: BASE

    1966-1969 CHEVROLET CAPRICE

    • Liter: 6.5
    • SubModel: BASE
    • CUI: 396
    • EngineType: V8

    1967-1969 CHEVROLET CORVETTE

    • CC: 6998
    • Liter: 7.0
    • SubModel: BASE
    • CUI: 427
    • EngineType: V8

    1966-1967 CHEVROLET MALIBU

    • Liter: 6.5
    • EngineType: V8
    • SubModel: BASE

    1969 CHEVROLET EL CAMINO

    • Liter: 6.5
    • SubModel: CUSTOM
    • CUI: 396
    • EngineType: V8

    1969 CHEVROLET KINGSWOOD

    • CC: 6998
    • Liter: 7.0
    • SubModel: BASE
    • CUI: 427
    • EngineType: V8

    1972 CHEVROLET CHEVELLE

    • Liter: 6.6
    • EngineType: V8
    • SubModel: GREENBRIER

    1970-1972 CHEVROLET EL CAMINO

    • Liter: 6.6
    • EngineType: V8
    • SubModel: BASE

    1970-1972 CHEVROLET EL CAMINO

    • Liter: 6.6
    • EngineType: V8
    • SubModel: SS

    1972 CHEVROLET BISCAYNE

    • Liter: 6.6
    • EngineType: V8
    • SubModel: BASE

    1970 CHEVROLET CHEVELLE

    • Liter: 6.6
    • EngineType: V8
    • SubModel: GREENBRIER

    1966 CHEVROLET CHEVELLE

    • CC: 6489
    • Liter: 6.5
    • SubModel: BASE
    • CUI: 396
    • EngineType: V8

    1968-1969 CHEVROLET CHEVELLE

    • Liter: 6.5
    • EngineType: V8
    • SubModel: MALIBU

    1966-1967 CHEVROLET IMPALA

    • Liter: 7.0
    • EngineType: V8
    • SubModel: SS

    1968-1969 CHEVROLET EL CAMINO

    • Liter: 6.5
    • SubModel: BASE
    • CUI: 396
    • EngineType: V8

    1972 CHEVROLET CHEVELLE

    • Liter: 6.6
    • EngineType: V8
    • SubModel: NOMAD

    1969 CHEVROLET CHEVELLE

    • Liter: 6.5
    • EngineType: V8
    • SubModel: CONCOURS ESTATE
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