Buick V-Belts and non-cogged belts are available for the GS 350 and 455 in very limited quantities. It's important to note that these GM V-Belts are specific to each Buick model year. To ensure a correct fit for your 350 or 455, your vehicle must have the original brackets and pulleys that correspond to your specific year model. For inquiries about the availability of these belts for your GS, please visit the 'Contact Us' page or check the 'SHOP' page.