Fluidampr Harmonic Balancer Damper - 531101 Subaru EJ20 EJ22 EJ25 WRX 94-14 STI 94-20

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Normal stock dampers wear out and engine performance upgrades increase naturally occurring harmful crankshaft torsional vibrations. Install a Fluidampr viscous damper to reduce wear on the main bearings and timing gear, achieve more accurate valvetrain operation and lower the risk of crank failure. Unlike rubber based dampers, Fluidampr automatically adapts to any engine modifications and constantly self-tunes in real time to protect across the entire RPM range. Features precision machined and computer balanced components that never need to be tuned or rebuilt.

Fitment Subaru. EJ series engines.
Bore Diameter 0.9436"
Degree Marking Range TDC
Degree Markings Engraved
Engine Balance Internal
Finish Black Zinc
Keyway Single
Length 1.927"
Material Steel
Mounting Hardware Included No
Outside Diameter 5-3/8"
Safety Rating SFI 18.1
Weight / Rotating Weight 6.9 lbs / 4.6 lbs