Oldsmobile 455 6.625" External Balanced Fluid Damper Harmonic Balancer SFI 18.1

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.

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.