ATI Toyota GR Corolla/Yaris G16E Super Damper - 917381

Toyota GR Corolla / Yaris ATI's Super Damper for Toyota 23+ G16E-GTS 1.6L turbo engines Dampens torsional crankshaft vibrations at all RPM levels Protects against engine harmonics Replaces the OEM unit #13470-18020 6-groove belt drive Laser-etched timing marks SFI 18.1 Certified for competition use Specs Shell Material: Aluminum, Part #916502 Hub Material: Steel, Part #916503 Inertia Weight: 2.2 lbs, 3-Ring - #916981 Bolt pack: #950217 Part # 917381 Please note: Most OEM cranks are held to +/- .0002" while most aftermarket cranks are held to +/- .0005." Hub bores are tight to accommodate aftermarket cranks and due to this honing may be required as part of the fitting process.