Peterbilt 567/579 AC Driers & Compressors: Peak A/C Performance This product line offers high-quality A/C components, including driers, compressors, clutches, and mounting brackets, for Peterbilt 567/579 models. Featuring reliable brands like BESTfit and Sanden, these parts ensure seamless fit and long-lasting performance to maintain or upgrade your truck's A/C system.