Timken HA590398 Wheel Bearing and Hub Assembly - Front

Timken HA590398 Wheel Bearing and Hub Assembly Overview

The Timken HA590398 wheel bearing and hub assembly is engineered for precise fitment and reliable performance in select Jaguar models. Designed as a non-driven hub, this assembly supports smooth wheel rotation and maintains proper alignment for vehicles such as the Jaguar XF, XFR, XJ, XJR, XJR575, XK, XKR, and XKR-S.

• Flange bolt hole quantity: 4 for secure mounting
• Wheel pilot diameters: 63.6 mm and 2.504 inches for accurate wheel centering
• Brake pilot diameters: 2.854 inches and 72.5 mm ensuring proper brake rotor alignment
• Wheel stud quantity: 5 for compatibility with factory lug nuts
• Hub pilot diameters: 3.058 inches and 77.67 mm for precise hub fitment
• Flange offset: 1.776 inches and 45.1 mm to maintain correct wheel positioning
• Flange diameter: 139 mm and 5.472 inches for proper hub-to-wheel interface
• Drive type: Non-driven, suitable for rear or front non-driven axle applications

Detailed Product Description

The Timken HA590398 wheel bearing and hub assembly is designed to meet the exact specifications required by Jaguar vehicles including the XF, XFR, XJ, XJR, XJR575, XK, XKR, and XKR-S models. This assembly features a 4-hole flange bolt pattern and 5 wheel studs, ensuring compatibility with the original equipment wheels and lug nuts. The dual measurement attributes for wheel pilot diameter, brake pilot diameter, hub pilot diameter, flange offset, and flange diameter provide precise fitment and alignment, which are critical for maintaining vehicle stability and brake system performance.

As a non-driven hub assembly, the HA590398 is intended for use on axles that do not transmit power, typically the front or rear non-driven wheels. The combination of flange and hub pilot diameters ensures the wheel is centered correctly on the hub, reducing vibration and uneven tire wear. The flange offset values maintain the proper distance between the hub mounting surface and the wheel mounting face, preserving the vehicle’s suspension geometry.

Common Applications and Issues Addressed

• Replacement for worn or damaged wheel bearing and hub assemblies on Jaguar XF, XFR, XJ, XJR, XJR575, XK, XKR, and XKR-S
• Eliminates wheel vibration caused by bearing wear or hub misalignment
• Resolves noise issues such as humming or grinding from faulty wheel bearings
• Restores proper brake rotor alignment to prevent uneven brake pad wear
• Corrects wheel runout and improves overall vehicle handling and safety

Installation Notes and Tips

• Ensure the vehicle is securely lifted and supported before beginning installation
• Verify the flange bolt hole quantity and wheel stud count match the vehicle’s specifications
• Clean the hub mounting surface thoroughly to prevent improper fitment
• Torque all flange bolts and wheel studs to manufacturer specifications
• Check for proper wheel pilot and brake pilot alignment during installation

Quality Assurance and Warranty

Timken wheel bearing and hub assemblies are manufactured to meet stringent quality standards for durability and performance. The HA590398 part number undergoes rigorous testing to ensure it meets OEM specifications for Jaguar vehicles. While specific warranty details may vary, Timken typically offers coverage against defects in materials and workmanship, providing confidence in the product’s reliability.