Home > Buick Accessories > Cascada > Windscreen Genuine Buick Cascada Windscreen 1 Windscreen founded. Select your vehicle to refine your results. Vehicle Specific Windscreen Part No.: 13398139 Your Price: 414.87 Retail Price: 495.00 You Save: $80.13 Qty: Check the fit Add to Cart Minimize the amount of wind in the passenger cabin with this Rear Wind Deflector. It fits between the rear headrests without disrupting Cascada's elegant contours.