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U660E U660 Transmission Planet Assembly | Premium Aftermarket Parts - Transwin

Hard parts

High-quality U660E / U660 automatic transmission planet assembly & repair kits for passenger cars. Direct-fit, durable planetary gear sets from Transwin. Inquiry now!

Hard parts

U660 / U660E Automatic Transmission Planet Assembly (Planetary Gear Set)


Product Overview


Upgrade your transmission rebuilds with the premium aftermarket U660 / U660E Planet Assembly from Transwin. Designed specifically for modern passenger cars and urban SUVs equipped with the 6-speed U660E automatic transmission, this planetary gear set is manufactured to meet or exceed OEM standards for durability, precision, and smooth power transfer.

As a trusted international trade merchant specializing in automatic transmission components, Transwin integrates premium supply chains to deliver reliable, long-lasting gear sets that effectively eliminate common shifting issues, noise, and premature wear in the U660 system.


Detailed Product Specifications


  • Transmission Model: U660 / U660E (6-Speed Automatic Transmission)
  • Vehicle Application: Passenger Cars, Sedans, and Urban SUVs
  • Components Included: * Main Planetary Carrier Assembly 
  • Material: High-Strength Forged Steel with Advanced Heat Treatment
  • Brand: TRANSWIN

Key Features & Technical Advantages


  • Precision Engineering for Passenger Cars: Tailored precisely for high-torque urban driving conditions. The gear profiles are optimized to minimize friction, lower running noise, and ensure seamless gear ratio transitions.
  • Advanced Heat-Treated Steel: The planetary gears and shafts undergo strict induction hardening and carburizing processes. This provides exceptional core toughness and surface hardness to resist pitting and fatigue.
  • Premium Bearing Integration: Equipped with heavy-duty thrust needle bearings that significantly reduce axial play and handle rotational stress efficiently, preventing the common 'planet failure' in U660E gearboxes.
  • Direct-Fit Rebuild Solution: Dimensionally identical to original components, ensuring a hassle-free installation for transmission repair shops, wholesalers, and rebuilders worldwide.

Common Failure Symptoms Addressed


Replacing a worn planetary gear set is vital if your customer's vehicle exhibits:

  • Whining or grinding noises coming from the transmission case.
  • Metal shavings found in the transmission oil pan during service.
  • Slipping gears or failure to engage reverse/forward gears properly.
  • Transmission overheating due to excessive mechanical friction.

Why Choose Transwin as Your Transmission Parts Partner?


At Transwin, we understand that global transmission rebuilders require precise compatibility and uncompromised quality.

  1. Quality Integration: We strictly source and integrate parts engineered for durability, minimizing your aftermarket defect rates.
  2. Global Export Expertise: Serving major international markets across Latin America (Brazil, Costa Rica) and Europe (Spain, France). We provide professional technical support and responsive customer service.
  3. Comprehensive Catalog: From TCU modules and valve bodies to friction plates and complete Kit Banners, Transwin is your one-stop integrator for passenger car transmission parts.


U660E U660 Transmission Planet Assembly | Premium Aftermarket Parts - Transwin
High-quality U660E / U660 automatic transmission planet assembly & repair kits for passenger cars. Direct-fit, durable planetary gear sets from Transwin. Inquiry now!
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Address:2nd Floor, No. 10, Qixinggang Industrial Road, Baiyun District, Guangzhou, Guangdong, China

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Copyright © Guangzhou Tranton Automotive Technology Co., Ltd. 

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