ATI Super Damper Crank Pulley for EJ205 EJ257 Fits Subaru WRX Sti

Description

ATI Super Damper Crank Pulley for Subaru EJ205/EJ257 WRX STI – Part #917991

Upgrade your Subaru WRX STI’s engine protection and performance with the ATI Super Damper crank pulley, designed specifically for EJ20, EJ22, and EJ25 engines. Unlike basic underdrive pulleys, the ATI Super Damper effectively eliminates torsional crankshaft vibrations across all RPM ranges, safeguarding your high-performance engine from damaging harmonics.

✅ Key Features:

• Designed exclusively for Subaru EJ205 and EJ257 engines (WRX/STI)

• Eliminates harmful torsional crankshaft vibrations for engine longevity

• Dual four-groove serpentine belt drive maintains factory belt setup

• Laser-etched timing marks for precise tuning

• Black zinc chromate finish for corrosion resistance and durability

• Meets and exceeds SFI 18.1 safety certification — approved for competition use

• Complete kit includes hub, outer shell, inertia ring, and bolt kit

• Direct OEM replacement with minor timing cover trimming possibly required for fitment