Toyota Lexus

30500-08030 Toyota Camry U660E Transmission

30500-08030 Toyota Camry U660E Transmission

OE NO.: 30500-08030 30500-33470 30500-58080 30500-58081
Model Number: U660E
Transmission Speeds: 6
Gearbox Type: Automatic
Product description: Application: Toyota Passenger Cars & Sedans: Camry: 3.5L V6 2GR-FE (2007 - 2017) Avalon: 3.5L V6 2GR-FE (2007 - 2018) Aurion: 3.5L V6 2GR-FE (2006 - 2017) Toyota Crossovers & MPVs: Hig
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Model Number	U660E
MOQ	1 Pcs
Condition	Remanufactured
Warranty	6 Months

The automatic transmission assembly with reference numbers 30500-08030 and 30500-33470 is designed for the Aisin U660E 6-speed automatic transmission. Engineered specifically for transverse front-wheel-drive layouts and high-torque V6 applications, this robust unit is built to handle the power of the 3.5L V6 (2GR-FE) engine in the Toyota Camry, Lexus ES350, Avalon, and related mid-size and full-size platforms.

Quick Specifications:

Part Numbers: 30500-08030 / 30500-33470 (Toyota OEM format)
Transmission Model: U660E (6-Speed Automatic)
Type: Transverse Front-Wheel Drive (FWD)
Engine Compatibility: 3.5L V6 (2GR-FE) and similar high-torque powertrains
Max Input Torque: ~350-400 Nm
Fluid Type: Toyota ATF WS (World Standard)
Fluid Capacity: ~6.5 - 7.5 Liters (dry fill)

Applications:

Toyota Camry (XV40 / XV50, 2006-2017, 3.5L V6 variants)
Lexus ES350 (2006-2018, 3.5L V6 variants)
Toyota Avalon (XX30 / XX40, 2005-2018, 3.5L V6 variants)
Toyota Sienna (XL30, 2011-2020, 3.5L V6 FWD variants)
Toyota Highlander / Kluger (Select 3.5L V6 FWD variants)
Lexus RX350 (Select FWD variants sharing the U660E platform)

Complete Assembly Includes:

✅ Heavy-duty transmission case with optimized planetary gearsets
✅ High-capacity torque converter with multi-plate lock-up clutch
✅ Valve body with precision shift solenoids and pressure regulators
✅ Transmission Control Module (TCM) integration (controlled by engine ECU)
✅ Clutch packs, brake bands, and high-volume oil pump
✅ Input/Output speed sensors, range selector, and sealing gaskets

Note: Transmission mounts, shift cables, axles, and external cooler lines may need to be transferred from the original unit.

Key Features:

✅ High-Torque Capacity: Specifically reinforced internal components to handle the 270+ HP and high torque output of the 3.5L V6 engine without slipping.
✅ 6-Speed Architecture: Provides a wider gear ratio spread for aggressive acceleration and relaxed, low-RPM highway cruising.
✅ Multi-Gear Lock-Up: The torque converter lock-up clutch engages in multiple forward gears (often 3rd through 6th) to reduce slippage, improve fuel economy, and lower transmission temperatures.
✅ Compact Transverse Packaging: Achieves 6 speeds in a footprint similar to older 5-speed automatics, optimizing engine bay space.
✅ Adaptive Shift Logic: Continuously monitors driving style and load to optimize shift points and clutch engagement pressure.

Technical Notes:

Critical Installation Requirements:

Fluid Specification: Must use Toyota ATF WS (World Standard) exclusively. Using older ATF T-IV or Dexron will cause severe shift issues, overheating, and internal clutch damage due to incompatible friction modifiers and viscosity.
Fluid Level Check: Must be performed with the transmission at operating temperature (typically 70°C–80°C) and the engine idling, using the overflow check plug on the transmission pan.
ECU/TCM Reset: After installation, the ECU memory reset and shift adaptation learning must be performed using Toyota Techstream or equivalent diagnostic tools to ensure smooth gear transitions and proper line pressure.
Cooler Flushing: The transmission cooler (integrated into the radiator) and external lines must be thoroughly flushed to remove metallic debris and clutch material from the failed unit.

Common Issues & Maintenance:

Torque Converter Shudder: A known issue in higher-mileage U660E units, often felt as a vibration at highway speeds (50-80 km/h) when the lock-up clutch engages. This is usually cured by a fluid exchange, adding a friction modifier, or replacing the torque converter with an upgraded unit.
Valve Body Wear: High-mileage units may experience wear in the valve body sleeves or solenoid screens, leading to harsh shifts, flare, or delayed engagement. Regular fluid changes prevent abrasive debris from accelerating this wear.
Fluid Service Intervals: Despite "lifetime" fluid claims in some manuals, a drain and fill every 60,000–80,000 km is strongly recommended to maintain shift quality, prevent torque converter shudder, and extend the lifespan of the transmission.