Ford SB 289 302 Windsor SFI 18.1 Harmonic Balancer Fluid Damper 28Oz External [Chrome]

Brand:	Speedmaster
Part Number:	PCE291.1025
Part Type:	Harmonic Balancer
Engine Balance:	External, 28 oz. imbalance
Safety Rating:	Not SFI-approved
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:	Chrome
Mounting Hardware Included:	No
Quantity:	Sold individually.

Speedmaster race fluid Harmonic dampers are manufactured from forged K1045 low carbon steel and filled with high viscosity silicone fluid. A nylon ring and the nylon position guides allow the steel inertia ring to rotate freely inside the housing. The steel inertia ring rotates harmonically with the engine and absorbs the torsion vibration from the rotating assembly at any frequency and RPM. It thus extends the life of crankshaft and bearing and allows the engine to produce more power and torque. All dampers are tested to 12,500 RPM for explosion proof. They also feature clear, easy-to-read timing marks. This damper is externally balanced; the term external balanced damper refers the built in weight or offset in the casting. When identifying your existing damper, (balancer) you must look on the backside. This is not visible if the damper is mounted on the engine. If your damper has no offset in the casting or weight, then you have an internal, (neutral) style damper. If you do see the offset in the casting or a weight, you have what is classified as an external damper.