National KD-11786-Y Wheel Bearing and Race Set - Front, Rear or Rear Inner

National KD-11786-Y Wheel Bearing and Race Set Overview

The National KD-11786-Y wheel bearing and race set is designed specifically for Chevrolet Suburban models including the C20, K10, and K20. This taper bearing set ensures precise fitment and reliable performance for driveline and axle maintenance.

• Compatible with Chevrolet C20 Suburban, K10 Suburban, and K20 Suburban
• Includes taper bearing cone (388a) and cup (382)
• Cone bore diameter: 2.2650 inches (57.5310 mm)
• Cup bore diameter: 3.8750 inches (98.4250 mm)
• Cone length: 0.8640 inches (21.9460 mm)
• Cup length: 0.7018 inches (17.8260 mm)
• Standout dimension: 0.1250 inches (3.1750 mm)
• Width: 0.8268 inches (21.0010 mm)

Technical Specifications and Detailed Description

This National wheel bearing and race set (part number KD-11786-Y) features a taper bearing cone with a bore of 2.2650 inches and a length of 0.8640 inches, paired with a taper bearing cup with a bore of 3.8750 inches and a length of 0.7018 inches. The cone radius measures 0.1400 inches, while the cup radius is 0.0310 inches, providing the precise geometry required for optimal bearing performance. The standout dimension of 0.1250 inches ensures proper seating and alignment within the axle assembly. This set is engineered to meet the exact specifications for Chevrolet Suburban models C20, K10, and K20, supporting smooth wheel rotation and reducing wear on driveline components.

Applications and Common Issues Addressed

• Replacement for worn or damaged wheel bearings on Chevrolet C20, K10, and K20 Suburban
• Eliminates wheel noise caused by bearing wear
• Prevents axle shaft play and vibration
• Restores proper wheel alignment and rotation
• Helps avoid premature tire wear due to bearing failure

Installation Notes and Tips

• Ensure the axle and hub assembly are clean and free of debris before installation
• Use proper tools to press the bearing cone and cup into place without damage
• Check bearing preload and adjust as necessary according to vehicle service manual
• Apply appropriate lubricant to bearing surfaces during installation
• Verify fitment compatibility with Chevrolet C20, K10, and K20 Suburban models before installation

Quality Assurance and Warranty Information

National wheel bearing and race sets are manufactured to meet OEM standards for durability and performance. The KD-11786-Y part number undergoes rigorous quality control to ensure dimensional accuracy and material integrity. While specific warranty details may vary, National typically offers coverage against manufacturing defects to provide confidence in product reliability.