Fluidampr (740121)
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Compatibility
- Platform
- Universal — verify fitment for your application
- Vehicle-specific fitment
- Review application details below
- Need help?
- Confirm fitment with us before ordering — (714) 202-7886
We list the engine platform a part is built for. That is not year-and-trim application data, so it does not confirm a fit on your specific vehicle.
- Est. install labor: 3.0 hrs — $375 at $125/hr. Pick Install at HRC and a 20% labor deposit ($75) is due at checkout; the balance is due at completion.
- An estimate for a stock vehicle, not a quote — we confirm it in writing when you book, before any labor is authorized. Seized hardware, prior modifications, diagnosis and machine work are quoted separately; tuning is arranged through our tuning partner. Questions: (714) 202-7886.
- Warranty & track disclaimer — read before you race it.
- Shipping & returns — rates and RMA terms.
- Installed in-house in Huntington Beach, CA — labor & service policy.
- Affirm and PayPal available at checkout.
More ways to pay at checkout
Protect your Corvette, CTS-V, or G8 LS engine from harmful torsional vibration with a Fluidampr viscous damper designed for high-performance street and racing applications. Increased cylinder pressure, RPM and rotating assembly changes can reduce the effectiveness of stock elastomer-style dampers. Fluidampr viscous damping technology helps control crankshaft harmonics across the entire RPM range to support long-term engine durability, accessory drive stability and reduced wear on critical components. Application summary: 1997-2004 Chevy Corvette / 2004-2007 Cadillac CTS-V / 2008-2009 Pontiac G8. LS engine. Fitment note: Pinning recommended for high-horsepower and supercharged applications. Fluidampr Pin Kit p/n 300004 available separately. Fitment note: Compatible with LS accessory drives using 1.500" crank pulley offset spacing. Fitment note: Does not fit dry sump applications.
| Part Type | Engine Harmonic Balancer |
|---|---|
| Bolt and Washer Included | No |
| Outside Diameter | 7-1/2" |
| Title | Fluidampr - 740121 - Harmonic Balancer - Fluidampr - LS SBC-97-04 Corvette/04-07 Cadillac CTSV - Each |
| Safety Rating | SFI 18.1 |
| Pulley Groove Quantity | 4 rear, 6 front |
| Pulley Bolt Pattern | Not compatible with supercharged applications. |
| Prop 65 Yes/No | Yes |
| Prop 65 (C, R, or CR) | CR |
| Prop 65 - Short Label | WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov |
| Mounting Hole Quantity | 1 |
| Degree Marking Range | None |
| Material | Steel |
| Keyway Type | No |
| Inside Diameter | 1.4795" |
| Finish | Black Zinc |
| Engine Balance | Internal |
| Drive Belt Type | Serpentine |
| Depth | 2.838" |
| Degree Markings | No |
| Weight / Rotating Weight | 10.9 lbs / 7.3 lbs |
| Weight | 10.9 lb |
| UPC | 815293002101 |
| Country of Origin | USA |
Verified fitment · 14 applications
- Cadillac CTS V (2004–2007)
- Chevrolet Corvette (1997–2004)
- Pontiac G8 (2008–2009)
| Part No. | 740121 |
|---|---|
| Brand | Fluidampr |
| Part Type | Engine Harmonic Balancer |
| Weight | 10.9 lb |
| UPC | 815293002101 |
| Country of Origin | USA |
Platform-level fitment (Ford + GM, Phase 1). We publish the engine platform a part is built for — not year-and-trim application data — so nothing here confirms a fit on a specific vehicle. Confirm fitment with us before ordering: (714) 202-7886.