Premium Differential Ring and Pinion Set for Dana 60 Designed with a 5.86 gear ratio, this ring and pinion set ensures optimal performance and durability for heavy-duty applications. Precision-Crafted with 8620 Steel for Longevity Manufactured using high-quality 8620 steel for superior strength and wear resistance, perfect for demanding driving conditions. Exact Fit for 9.75-Inch Ring Gear and Standard Rotation Features 41-tooth ring gear and 7-tooth pinion with 29 splines, compatible with 4.56 and numerically higher ratio carriers for Dana 60 differentials. Wide Vehicle Compatibility Perfect replacement for 1978-1981 Dodge D400, D450, and 1979-1980 Dodge W200 models, ensuring a seamless installation process. Backed by 1-Year/50,000-Mile Warranty Supported by Motive Gear's industry-standard warranty, this product offers peace of mind with guaranteed performance and durability.