NISSAN 38421-C8926 Differential Case Set

This genuine NISSAN (part number: 38421-C8926) differential case set (CASE SET-DIFFER) is a premium quality, high-strength structural component responsible for the reliable operation of the vehicle drivetrain. The differential case houses and precisely locates the pinion and side gears, ensuring proper torque distribution between the wheels, especially during cornering.

Key Features and Characteristics:

• Structural Integrity: The case protects internal gears from external impacts and mechanical stresses, minimizing microscopic deflection of shafts and gears under load.
• Precision Machining: Bearing journals and mating surfaces are manufactured to strict OEM tolerances, ensuring perfect rotational accuracy and quiet operation.
• Optimal Lubrication: The internal design of the housing facilitates the continuous flow of differential fluid, preventing gear overheating and premature wear.

Common Symptoms of Failure or Wear:

• Abnormal humming, whining, or rumbling noises from the differential that intensify with speed changes or during cornering.
• Metallic clunking or jerking in the drivetrain upon acceleration or deceleration (due to increased backlash).
• Presence of metal shavings or fine metallic debris in the drained differential fluid.
• Cracking or deformation of the case resulting from extreme mechanical stress or overheating due to insufficient lubrication.

Technical Specifications:

• Manufacturer: NISSAN (Genuine OEM part)
• Part Number: 38421-C8926
• Product Type: Differential Case Set (CASE SET-DIFFER)
• Material: High-strength cast steel / iron alloy
• Finish: Heat-treated surface according to OEM specifications for maximum service life