NISSAN 38125-8210A Shim Washer

The genuine NISSAN 38125-8210A (alternative part number: 3812582100) is a premium-quality, precision shim washer used across various mechanical vehicle assemblies—most commonly in the transmission, differential, or suspension components—to set precise axial clearance.

Shim washers play a crucial role in ensuring optimal play (clearance) between shafts and gears. Improper shimming can lead to premature wear, noisy operation, or even complete drivetrain failure.

Technical Features and Functions:

• Manufacturer: NISSAN (Genuine OEM part)
• OEM Part Number: 38125-8210A (Interchangeable/superseded part number: 3812582100)
• Material Quality: High-strength hardened steel for minimal wear and maximum service life.
• Surface Finish: Precision-ground surface to ensure perfect flatness and precise thickness tolerances.
• Application: Setting and fine-tuning axial clearance in rotating or sliding shaft assemblies.

Role and Importance of the Shim Washer:

During vehicle assembly, precision shimming is essential due to manufacturing tolerances. This washer ensures that rotating components (such as differential drive pinion and ring gears) run in their intended design positions, minimizing friction and vibration.

Signs of Wear or Failure:

• Increased mechanical noise, metallic humming, or clicking from the drivetrain.
• Increased backlash or play in the shafts or differential.
• Presence of metal particles in the lubricating oil (caused by washer wear or galling).