Details

• Brand:

  

• SKU:

  38104AA400

• Other Names:

  Gear Set

• Description:

  All models. XT, xt6, sedan,coupe, wagon & hatchback. 3.7 gear ratio. From 4/86. Impreza. 2.5l. Manual trans. Without sti. With turbo. Loyale. 3.700 ratio. XT coupe. 3.700 ratio.

  
  

  Ring & Pinion – Subaru (38104AA400)

  The Ring & Pinion – Subaru (38104AA400) is a Genuine OEM drivetrain component meticulously engineered to restore or enhance the performance of your Subaru’s differential. This matched set combines a ring gear and pinion gear crafted to Subaru’s rigorous standards, delivering seamless torque transfer, minimal backlash, and quiet operation. Built for durability and precision, it meets the expectations of professional mechanics and DIY enthusiasts working on drivetrain rebuilds or upgrades.

  • Genuine Subaru OEM ring and pinion pair for exact gear matching

  • Part Number: 38104AA400 for easy identification and accurate replacement

  • Manufactured from high-strength, precision-honed alloy steel

  • Engineered for optimized tooth geometry, smooth torque delivery, and reduced noise

  • Designed specifically for select Subaru differential applications, ensuring precise fitment

  • Ideal for professional differential rebuilding and DIY gear upgrades

  This ring and pinion set is forged from premium alloy steel and undergoes advanced machining and heat-treating processes to achieve optimum hardness and tooth profile accuracy. The gears are precisely hobbled and finished, providing excellent contact patterns, superior durability, and resistance to wear—even under demanding torque loads and variable driving conditions.

  For professional mechanics, the Ring & Pinion – Subaru (38104AA400) offers a factory-matched set that eliminates the need for custom shimming or trial-and-error calibration. This translates to faster rebuilds and consistent, repeatable performance. DIY enthusiasts benefit from the plug-and-play nature of this OEM set, as it installs directly into compatible Subaru differentials without special modifications—helping ensure reliable power distribution and smooth operation from the start.

  When properly installed, this OEM ring and pinion deliver low backlash and minimal vibration, significantly improving driveline refinement. The hardened gear surfaces are specially designed to resist pitting, chipping, and premature wear, which is especially valuable in high-torque or performance-driven vehicles.

  Choosing the Ring & Pinion – Subaru (38104AA400) over aftermarket alternatives safeguards your differential’s integrity and long-term functionality. It maintains factory-caliber safety, handling, and reliability, all while offering the reassurance of OEM-grade engineering. Whether you’re restoring, repairing, or upgrading your Subaru’s differential, this set provides precision, durability, and the peace of mind that come with authentic Subaru parts.

  
  

• Condition: New
• Replaces:

  38104aa000

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