Crankshaft Pulleys & Harmonic Balancers for BMW A90 MKV Supra B58 3.0L

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Keep your drive belt system in check by replacing your BMW's crankshaft pulleys and harmonic balancers.
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Crankshaft Pulley
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Corteco - Corporate Logo
T#:586900
Part#: 11238638534
Ships in 2 Business Days
$ 545.99 USD
Free Shipping
$ 545.99 USD
Free Shipping
This is the main crankshaft pulley commonly referred to as the harmonic balancer.
VAC Harmonic SuperDamper By ATI - B58
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
ATI Performance Products - Corporate Logo
T#:27605443
Part#: ATI-HPCD-B58
Ships on Jul 20, 2026
$ 389.99 USD
Free Shipping on orders $49 and up

Understanding the criticality of harmonic resonance in BMW inline-6 engines, ATI Performance Products has collaborated with VAC Motorsports to craft revolutionary dampers. Designed for BMW 2.5L, 2.8L, 3.0L, and 3.2L straight-6 engines in E36 and E46 M3, E9X, E6X, Z3s, and Z4s, these dampers tackle harmonic vibrations, unlocking heightened horsepower, torque, and longevity. Forget about broken oil pumps and timing chains!

Pairing seamlessly with VAC accessory pulleys, these 7" diameter dampers boast OEM-style timing alignment tabs, ensuring a direct fit over OEM balancers. Notably, all ATI Super Dampers exceed SFI 18.1 Safety Certification for competitive use, making them a must-have for BMW enthusiasts. Benefits extend to eliminating vibration issues with lightweight clutch and flywheel assemblies, reducing wear on bearings, engine accessories, and oil pumps, and harmonizing with underdrive pulleys.

Plus, each package includes the lightweight VAC Billet Crankshaft Pulley, proudly made in the USA for uncompromised quality assurance.

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ATI Super Damper / Harmonic Balancer - Stock Size - BMW B58A (Gen1), ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
ATI - Corporate Logo
T#:43142742
Part#: 918573
In Stock at Vendor
$ 418.99 USD
Free Shipping on orders $49 and up

ATI Super Damper / Harmonic Balancer - 10% Underdrive - BMW B58A (Gen...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
ATI - Corporate Logo
T#:43142743
Part#: 918352
Back Ordered
$ 451.99 USD
Free Shipping on orders $49 and up
This ATI Super Damper is a direct replacement for the OEM Harmonic Balancer, designed to further reduce harmful engine harmonics that could lead to damage to sensitive engine components. The 10% underdrive function of this super damper is designed to increase usable horsepower by reducing parasitic power loss without greatly affecting engine accessories.
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ATI Super Damper / Harmonic Balancer - 21% Underdrive - BMW B58A (Gen...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
ATI - Corporate Logo
T#:43142744
Part#: 918351
Back Ordered
$ 418.99 USD
Free Shipping on orders $49 and up
This ATI Super Damper is a direct replacement for the OEM Harmonic Balancer, designed to further reduce harmful engine harmonics that could lead to damage to sensitive engine components. The 21% underdrive function of this super damper is designed to greatly increase usable horsepower for racing applications by driving engine accessories slower, reducing overall parasitic power loss.
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