Dana 30 Differential for Case Assembly Kit with 3.73 to 4.10 Ratio High Quality Casting Services Product

For Jeep enthusiasts seeking to optimize their vehicle's performance with numerically higher gear ratios, the Dana 30 Differential Case Assembly Kit for 3.73 to 4.10 ratios provides the essential foundation for a successful gear upgrade. Engineered specifically for the Dana 30 front axle found in Jeep Wrangler TJ/YJ and Cherokee XJ models, this high-quality kit ensures the differential case can handle the increased torque loads and mechanical stresses associated with lower gear ratios, making it ideal for vehicles running larger tires or requiring enhanced crawling capability.

Premium Material and Performance Specifications
The core of this assembly kit is a differential case manufactured from high-strength ductile iron (Grade 65-45-12), chosen for its superior tensile strength and exceptional impact resistance compared to standard gray iron. This material composition is crucial when operating with 3.73 to 4.10 ratios, as these gear sets transmit significantly more torque to the differential components. The casting undergoes normalization heat treatment to relieve internal stresses and ensure dimensional stability under load, providing a reliable foundation that maintains critical gear alignment and prevents case distortion under high-stress conditions.

Precision Manufacturing and Quality Assurance
Our differential cases are produced using advanced sand casting technology with resin-bonded molds that capture every detail of the complex internal geometry. This process ensures optimal wall thickness and structural integrity throughout the casting. Following casting, each case undergoes precision CNC machining on all critical surfaces, including the ring gear flange, bearing journals, and cross-pin bore. This machining process maintains tolerances within ±0.0005 inches, guaranteeing perfect ring gear runout and proper bearing fitment – essential factors for achieving quiet operation and maximizing gear life in high-ratio applications.

Application-Specific Engineering
This complete assembly kit is specifically engineered to support gear ratio upgrades within the 3.73 to 4.10 range for Dana 30 axles. The kit includes the high-strength differential case, precision-machined spider gears, hardened cross-pin, and premium thrust washers. This comprehensive package provides everything needed for a professional-grade installation, ensuring all components work in harmony to handle the increased torque multiplication of lower gears. The robust construction makes it particularly suitable for off-road enthusiasts and professional installers seeking reliable performance in demanding conditions.

Choose this Dana 30 Differential Case Assembly Kit for your next gear upgrade project. With its high-quality casting, precision machining, and application-specific engineering, it delivers the durability and performance needed to maximize the potential of your 3.73 to 4.10 ratio gear set while ensuring long-term reliability in both on-road and off-road environments.