SKU: ATI918641
MPN: 918641
The ATI Performance Harmonic Damper for Nissan V6 GTR VR38 with 7.074-inch outer diameter is a precision-engineered crankshaft component designed to absorb and dissipate harmonic vibrations generated during engine operation. Built with aluminum and steel construction, this SFI 18.1-certified damper reduces stress on the crankshaft, main bearings, and engine block—critical for high-output performance engines where resonance can lead to premature component failure.
The 7.074-inch diameter sizing is matched specifically to Nissan's VR38 twin-turbocharged six-cylinder platform, ensuring proper fitment and damping effectiveness across the engine's operational RPM range. Engineered as an internal balance unit, this harmonic damper integrates with the engine's stock balance design without requiring additional counterweight compensation. SFI 18.1 certification confirms compliance with sanctioning body standards for drag racing and high-performance motorsports applications, providing assurance of safety-tested performance under extreme load conditions.
This damper is engineered for builders and owners of boosted Nissan VR38 engines—particularly those operating in competitive drag racing, time attack, or street performance applications where engine revs approach or exceed factory limits. Upgrading to a performance-grade harmonic damper becomes essential when power output increases beyond original equipment specifications, as OEM dampers are calibrated for stock torque and RPM ranges. The combination of aluminum/steel construction provides optimal stiffness-to-weight ratio for maintaining damping effectiveness while minimizing rotational mass.
ATI Performance is recognized in the Nissan tuning and motorsports community for damper solutions tailored to factory engine platforms. Proper harmonic damper selection protects against torsional vibration failures that commonly occur when forced-induction VR38 engines are pushed beyond OEM calibration, making this a critical upgrade for reliability-focused performance builds.
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