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Fluidampr 720121 Big Block Chevy Harmonic Balancer Internal Balance SFI - 7.25 18.1

(Chevrolet Camaro 1967-72, 2014-15, Corvette 1965-69, 2006-07, 2009-10, 2012, Impala 1963, 1965-72, Malibu 1966-67, Chevelle 1965-72 + 23 more models)

Part of: Fluidampr Big Block Chevy Harmonic Balancer Internal Balance SFI

Other options in this family: Fluidampr 800101 Fluidampr 620111

Manufacturer

Picture for manufacturer Fluidampr

Part Number

720121
6 reviews
Sale Price

$518.47

1 left at this price

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Usually delivered within 2 days

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Product Details

The Fluidampr 720121 is a high-performance viscous harmonic balancer designed specifically for internally balanced big block Chevy engines. With a 7.25-inch diameter, this premium damper provides superior torsional vibration control across the entire RPM range, protecting your crankshaft and engine components from damaging harmonic frequencies that stock balancers cannot adequately control.

Key Features:

  • Viscous fluid damping technology effectively controls harmful torsional vibration throughout the complete RPM range
  • Precision CNC machined from high-grade steel for exceptional balance and durability
  • 7.25-inch diameter for big block Chevy applications with internal balance
  • Durable black zinc corrosion-resistant finish with laser-engraved timing marks
  • SFI 18.1 certified for racing and high-performance applications
  • Maintenance-free design with sealed construction
  • Made in USA with precision manufacturing standards

Unlike conventional elastomer-style dampers that deteriorate over time and lose effectiveness at high RPM, Fluidampr's patented viscous technology maintains consistent damping performance regardless of temperature or engine speed. This results in reduced wear on bearings, timing components, and the crankshaft itself, while helping to unleash hidden horsepower and torque by stabilizing crankshaft harmonics. Essential protection for modified engines where increased power output generates more severe torsional vibration than stock configurations.

Products specifications

Fits

Chevrolet Camaro 1967-72, 2014-15, Corvette 1965-69, 2006-07, 2009-10, 2012, Impala 1963, 1965-72, Malibu 1966-67, Chevelle 1965-72, C10 Pickup 1968-72, Caprice 1966-72, C10 1968-72, El Camino 1966-72, Nova 1970, K10 Pickup 1968-69 + 17 more models

Balance Style

Neutral

Bore Dia. Min/Max

1.599 / 1.600

Degree Marking Range

50 BTDC to 10 ATDC

Harmonic Balancer Construction

Fluid

Harmonic Balancer Finish

Black zinc chromate

Harmonic Balancer Material

Steel

Keyway

Single 3/16"

Length

2.685

Mounting Hardware Incl.

No

Notes

Additional timing/degree marks at 90, 180, and 270 degrees.

OD

7-1/4" (7.250)

Outside Diameter (in)

7.250 in.

Quantity

Sold individually.

Rotating Weight

12.3 (8.2 Rwt)

Outside Diameter

7-1/4"

Prop 65

WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov

Weight / Rotating Weight

12.8 lbs / 8.5 lbs

inside Diameter

1.599

Finish

Black Zinc

Bolt And Washer Included

No

Degree Marking Range

50 BTDC to 10 ATDC. Additional timing/degree marks at 90, 180 and 270

Material

Steel

Safety Rating

SFI 18.1

Keyway Type

Single; (3/16")

Engine Balance

Internal

Degree Markings

Engraved

Depth

2.685

Mounting Hole Quantity

1

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