BMW Z4 Crankshaft Damper by ATI (7.074, 10% Under Drive, AL, 6-Groove) for 2019–2027 Z4 B58. A purpose-built harmonic damper that manages crankshaft vibration and refines accessory drive speed.

Designed around the B58 layout, this unit replaces the factory crank pulley with a 10% underdrive to modestly reduce accessory load while maintaining belt stability. The 6-groove profile and precision machining promote consistent operation and long-term reliability, helping control torsional vibration that can affect rotating assemblies.

Features

• 7.074-inch ATI damper; 10% underdrive
• 6-groove pulley for OE-style belts
• Fitment: 2019–2027 BMW Z4 (B58); also 2020+ Toyota Supra (B58)
• Aluminum construction; vehicle-specific design

Need guidance or a quote? Call our Austin, Texas or Los Angeles, California area teams—we offer installation and customization at both shops: 512-982-9393 (TX), 562-981-6800 (CA).

Buying multiple items? Contact us for potential shipping discounts. We install on premises at both locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov