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Fluidampr Crank Pulley For Honda K-Series K20A K20Z

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If you want to upgrade your sport compact's engine, you may face harmful crankshaft torsional vibrations. Fortunately, the Fluidampr viscous damper is an ideal solution to this issue. This damper reduces wear on your main bearings and timing gear, enhances valvetrain operation accuracy, and minimizes the risk of crank failure.

The Fluidampr damper is incredibly impressive as it can self-tune in real-time and adapt to any changes you make to your engine. This ensures it consistently delivers optimal damping at peak levels and varying frequencies. As the engine revs up, torsional vibration suspends the inertia ring, reducing the weight felt on the crankshaft and ensuring ideal dampening while maintaining quick revs.

This product is perfect for those concerned about the potential risks of turbo and NOS power surges. It features precision machined and computer-balanced components, making it a reliable and long-lasting investment. Notably, the Fluidampr damper is both SFI-approved and made in the USA. It has also been ISO certified, ensuring it meets the highest quality and safety standards.

Fitment 2002-2010 Honda / Acura K series engines.
Bore Diameter 1.1817"
Degree Marking Range 4 Timing marks
Degree Markings Engraved
Engine Balance Internal
Finish Black Zinc
Keyway Single
Length 1.973"
Material Steel
Mounting Hardware Included No
Outside Diameter 5-7/8"
Safety Rating SFI 18.1
Weight / Rotating Weight 6.4 lbs / 4.3 lbs


  • Fluidamprs are designed with a tighter fit for increased damper performance.
  • Check the area around the Fluidampr for possible interference with other aftermarket parts. Fluidampr 620601 will require slight trimming of the plastic timing cover to accommodate the 40% under drive pulley.
  • Ensure the flywheel bolts are the correct length when using aftermarket crankshafts and flywheels. Tapped hole depths and flange thicknesses can vary enough for the flywheel bolts to bottom out. CHECK THE FLYWHEEL BOLT LENGTH IN EVERY THREADED HOLE. Add a drop of Loctite (or equivalent) to each bolt and torque flywheel bolts to the factory torque specification. DO NOT OVER-TORQUE FLYWHEEL BOLTS; THEY WILL YIELD AND FAIL. DO NOT USE AN IMPACT DRIVER TO TIGHTEN THE FLYWHEEL BOLTS. Failure to use the proper flywheel bolt length and to properly torque the flywheel bolts can cause them to back out while the engine is operating. This can cause main bearing caps to crack, fractured oil pump gears, a loose crankshaft bolt, and other internal engine damage.