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No matter the condition of your 2009 STS, OPGI offers two Harmonic Balancer related parts to boost performance and get your 2009 STS back on the road. Choose from trusted brands like General Motors and Lokar, with prices ranging from $189.99 to $229.99, all backed by our Price Match Guarantee. With OPGI’s 60-day return policy and thousands of verified reviews, you can shop confidently for your 2009 STS restoration. Enjoy fast shipping directly to your home, or visit our Southern California Showroom & Warehouse to see our Harmonic Balancer related parts in person.
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