Fluidampr Steel Internally Balanced Damper for Mazda Miata (NA/NB) - Crankshaft Dampers - Fluidampr at Garage 56 Engineering
Fluidampr Steel Internally Balanced Damper for Mazda Miata (NA/NB) - Crankshaft Dampers - Fluidampr at Garage 56 Engineering
Fluidampr Steel Internally Balanced Damper for Mazda Miata (NA/NB) - Crankshaft Dampers - Fluidampr at Garage 56 Engineering
Fluidampr Steel Internally Balanced Damper for Mazda Miata (NA/NB) - Crankshaft Dampers - Fluidampr at Garage 56 Engineering
Fluidampr Steel Internally Balanced Damper for Mazda Miata (NA/NB) - Crankshaft Dampers - Fluidampr at Garage 56 Engineering
Fluidampr Steel Internally Balanced Damper for Mazda Miata (NA/NB) - Crankshaft Dampers - Fluidampr at Garage 56 Engineering

Fluidampr Steel Harmonic Damper - NA/NB Miata (93-05)

Fluidampr viscous crankshaft damper and crank pulley for the Mazda B-series engine in the 1993-1997 Mazda Miata...
Vendor: Fluidampr
SKU: FDR521001
Availability: Out Of Stock
Product type: Crankshaft Dampers
$517.60
$608.94
$517.60
Save $91.34
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Fluidampr Steel Internally Balanced Damper for Mazda Miata (NA/NB) - Crankshaft Dampers - Fluidampr at Garage 56 Engineering

Vendor: Fluidampr

Fluidampr Steel Harmonic Damper - NA/NB Miata (93-05)

$608.94 $517.60

Vendor: Fluidampr

Fluidampr Steel Harmonic Damper - NA/NB Miata (93-05)

$608.94 $517.60

Fluidampr viscous crankshaft damper and crank pulley for the Mazda B-series engine in the 1993-1997 Mazda Miata (NA) and 1999-2005 Mazda Miata (NB). It replaces the factory rubber-element damper with a sealed steel viscous unit that controls crankshaft torsional vibration across the rpm range and never needs retuning or rebuilding. It bolts to the factory crank hub with a four-bolt interface, so the crankshaft bolt does not need to be loosened.

  • Internally balanced, CNC-machined and computer-balanced high-tensile steel with a black zinc chromate finish; engraved timing marks; SFI 18.1 certified; made in the USA
  • Four-bolt mounting interface; Fluidampr says this allows continued NASA and SCCA compliance. Includes grade 12.9 M6 x 16 mm bolts
  • 10% underdrive water pump/alternator drive groove to help prevent water pump cavitation and overheating at high rpm. Fluidampr specifies a Gates K040335 (34 in.) or equivalent belt for the water pump/alternator; the A/C and power steering belt stays stock
  • Works with the factory and Mazdaspeed tone wheel
  • Outside diameter 5-7/8 in.; weight 7.2 lb

Fitment: 1993-1997 Mazda Miata (NA) and 1999-2005 Mazda Miata (NB), including the 2004-2005 Mazdaspeed. Fluidampr does not list the 1990-1992 Miata. Replace the water pump/alternator belt with the shorter belt specified above.

Part number: Fluidampr 521001

This Part Fits:

Year Make Model Submodel
1993-1997 Mazda Miata All
1999-2005 Mazda Miata All

Fluidampr logo styled in black on a white backgroundFluidampr® — Viscous Harmonic Balancers for Serious Performance

Fluidampr harmonic balancers (viscous torsional dampers) are engineered to control harmful crankshaft vibration across the entire RPM range. By converting twisting vibration into heat inside a sealed silicone-filled housing, Fluidampr helps stabilize the rotating assembly—improving durability, throttle response, and long-term reliability on street, track, and boosted builds.

Key Benefits

  • Reduces destructive torsional vibration to protect bearings, timing components, and the crankshaft.
  • Broadband damping performance—effective from idle to redline (no re-tuning or external weights).
  • Smoother operation for cleaner data, more consistent power delivery, and better drivability.
  • Maintenance-free sealed design built for high heat and high RPM environments.
  • Many applications offer SFI 18.1 certified options for competition use.
  • Precision construction with CNC-machined housings and wear-resistant internal components.

Ideal For

  • Turbocharged, supercharged, or high-compression engines.
  • Endurance racing, road course, time attack, drag, and spirited street performance.
  • Engines with lightweight flywheels, solid mounts, or other mods that amplify vibration.

What makes Fluidampr different?

Unlike tuned elastomer or pendulum balancers designed for a narrow frequency range, Fluidampr uses a viscous shear design that continuously adapts to changing harmonics. The result is reliable, broadband damping as you modify the engine or change operating conditions—no retune required.

Why Buy from Garage 56 Engineering

  • Motorsports-focused curation—only parts we trust for real-world builds.
  • Helpful, enthusiast support for fitment and setup questions.
  • Secure checkout and fast fulfillment from a performance-first shop.

Note: Check vehicle fitment, pulley configuration, and certification requirements for your series before purchase. Product specifications may vary by application.

Our 365-Day Promise

Garage 56 believes so strongly in the products we sell that every item comes with a full 365-day replacement gurantee - regardless of the manufacturer warranty timeline.

Shipping Policy

In-stock orders placed before 1pm EST ship same day. All qualifying orders of $56 or more ship free. Flat-rate and expedited shipping options are available at checkout.

An item is marked as "Special Order" what does that mean?

Items marked as "Special Order" are available for shipment direct from the manufacturer - also known as "drop shipping". In most instances we are able to ship directly to you however, in limited circumstances we will need to order the item into our warehouse before we are able to dispatch to you. In all cases, your form of payment will not be finalized until we confirm availability of all Special Order items - place your order with confidence!