Fluidampr 571101 Harmonic Balancer for 2013-20 Subaru/Toyota 2.0L FA20/4U-GSE

Vehicle Fitment

• 2013-2020 Subaru BRZ (2.0L FA20)
• 2013-2016 Scion FR-S (2.0L FA20 / Toyota 4U-GSE)
• 2017-2020 Toyota 86 / GT86 (2.0L 4U-GSE)
• 2015+ Subaru WRX (2.0L FA20 / FA20F) - verify accessory-drive layout

Features

• Viscous-type harmonic balancer: absorbs crankshaft torsional vibrations across full RPM range
• Computer-balanced internal inertia ring for smooth operation and minimal vibration
• Steel housing with corrosion-resistant black zinc finish for longevity
• Engraved timing mark for accurate ignition/timing reference
• Internal balance suitable for stock or modified 2.0L FA20 / 4U-GSE engines
• Reduces stress on main bearings, timing gear, and valvetrain - enhances engine durability
• Improves throttle response and stability under power - beneficial for tuned or performance builds
• SFI-rated (SFI 18.1) for track use - suitable for street, performance, and racing applications

Specifications

• Outside Diameter (OD): 5-7/8"
• Bore Diameter: 0.787"
• Rotating Weight: 3.8 lbs (total weight 5.8 lbs)
• Length / Depth: 1.62"
• Engine Balance: Internal
• Finish: Black zinc coating
• Accessory bolt pattern: Pre-drilled 3-bolt for 2.75" center distance (for aftermarket accessory drives)
• Safety Rating: SFI 18.1
• Mounting Hardware: Not included - use OEM or aftermarket crank bolt/washers

Included Components

• 1x Fluidampr 571101 Harmonic Balancer (steel, black zinc finish)

Product Description

The Fluidampr 571101 harmonic balancer is engineered for Toyota- and Subaru-branded 2.0L flat-four engines (FA20 / 4U-GSE), found in vehicles such as the Subaru BRZ, Scion FR-S, Toyota 86, and select Subaru WRX models. Unlike stock elastomer dampers - which are tuned for narrow rpm bands and degrade over time - this viscous damper uses a fluid-coupled internal inertia ring to absorb torsional crankshaft vibrations across the entire RPM range. That results in smoother operation, improved valvetrain stability, and reduced stress on bearings and timing components.:contentReference[oaicite:1]{index=1}

Ideal for street, track, or performance builds - especially when engine output is increased - the 571101 balancer helps preserve engine internals and maintain reliability under increased load or higher revs. It is precisely CNC-machined, computer-balanced, and finished with corrosion-resistant coating for long life. Whether you're upgrading from a worn stock damper or installing performance bolt-on upgrades, Fluidampr 571101 delivers consistent, maintenance-free vibration control and enhanced engine longevity.:contentReference[oaicite:2]{index=2}