ATI Performance Products 917991 Super Damper Harmonic Balancer 5.50 in Aluminum 4/5 Groove 5% Overdrive for 2002-2021 Subaru Impreza WRX / WRX STI (EJ20 / EJ25)

The ATI Super Damper replaces the factory harmonic balancer with a tunable elastomer damper that controls crankshaft torsional vibration across the RPM range.

Key Features

• 5.50 in outer diameter, aluminum shell, 4/5 groove
• Elastomer (O-ring) design with a steel inertia weight dampens torsional crankshaft vibration at all RPM
• Meets the SFI 18.1 specification
• Laser engraved timing marks
• Tunable and rebuildable - O-rings and shell assemblies are serviceable

Fits These Vehicles

• Fits 2002-2014 Subaru Impreza
• Fits 2012-2016 Subaru WRX
• Fits 2013-2021 Subaru WRX STI

Confirm the model year, the engine and the part number against your vehicle before ordering.

ATI Performance Products warrants this part to the original retail purchaser against defects in material and workmanship for 90 days from the date of the original invoice. Warranty service is handled directly by ATI Performance Products, which will repair or replace a part its inspection finds defective.

Specifications

• Brand: ATI Performance Products
• Manufacturer Part Number: 917991
• Type: Harmonic Balancer
• Outer Diameter: 5.50 in
• Material: Aluminum
• Belt Drive: 4/5 Groove
• Manufacturer Warranty: 90-Day Limited Warranty
• Country of Origin: United States
• Condition: New

Images are for illustrative purposes. The product you receive may differ in finish or packaging from the photograph.