Speedmaster®
Oldsmobile 455 6.625" External Balanced Fluid Damper Harmonic Balancer SFI 18.1
Product Information
Overview
Using only three parts--a laser-welded sealed housing, an internal inertia ring, and highly viscous silicone fluid between the two--these SFI-approved Fluid dampers can control all crankshaft vibration, not just a limited frequency range. As a result, you get reduced wear on the main bearings and timing gear, more stable valvetrain operation, and less chance of crank failure.
Specs
| Brand: | Speedmaster |
| Part Number: | PCE291.1075 |
| Part Type: | Harmonic Balancer |
| Engine Balance: | External, 25 oz. imbalance |
| SFI Rating: | SFI 18.1 |
| Degree Markings: | Yes |
| Degree Marking Range: | 50 BTDC to 10 ATDC |
| Outside Diameter (in): | 6.625 in. |
| Harmonic Balancer Material: | Steel |
| Harmonic Balancer Construction: | Fluid |
| Harmonic Balancer Finish: | Black painted |
| Mounting Hardware Included: | No |
| Quantity: | Sold individually. |
| Notes: | Additional timing/degree marks at 90, 180, and 270 degrees. |
Warranty Information
12-Month Limited Worldwide Warranty
Prop 65 Warning
This product may contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
Installation Guide
Our AI assistant generates a step-by-step guide for this product — covering installation, maintenance, and troubleshooting.
This AI-generated guide is for general reference only and does not constitute official Speedmaster product documentation. Always verify fitment, torque specifications, and safety requirements before installation.