Holstein Steering Coupling Boots are direct OE replacements for these critical steering components, offering perfect fit, form and function for flawless operation. Precision engineered boot exactly duplicates the function of the OE component. Manufactured with premium materials that ensure rugged, long-term performance and superior grease retention. Exact OE dimensions ensure a tight fit that keeps grease in and moisture and road contaminants out, all while delivering a trouble-free installation process. Backed by Holstein's 3 year/36k mile warranty - we believe in our parts and our warranty shows it!