JDM Toyota U660E 6-Speed Automatic Transmission – 3.5L 2GR-FE FWD

Replace your slipping, damaged, or failed transmission with a low-mileage JDM Toyota U660E transmission from J-Spec Auto Sports.

Toyota designed the U660E as a compact 6-speed electronically controlled automatic transaxle for compatible front-wheel-drive applications. In addition, Toyota paired this transmission family with the powerful 3.5L 2GR-FE V6 engine in several Toyota and Lexus vehicles.

This genuine OEM transmission comes from Japan. J-Spec Auto Sports also inspects the unit before sale and provides actual transmission photos so you can compare it with your original gearbox.

Because Toyota used different U660-series transmissions and application-specific configurations, always verify your VIN, transmission code, drivetrain, connectors, and original unit before ordering.

Quick Details

• Manufacturer: Toyota
• Transmission Code: U660E
• Transmission: 6-Speed Automatic
• Engine: 3.5L 2GR-FE V6
• Drivetrain: Front-Wheel Drive / FWD
• Condition: Used JDM / Low Mileage
• Origin: Japan
• Item ID: 253803
• Serial Number: U660E
• Photos: Actual Transmission Photos
• Warranty: 90 Days
• Shipping: Nationwide Freight Shipping
• Installation: Affordable Installation Available
• Local Pickup: Henrico / Richmond, Virginia

Toyota U660E Transmission Specifications

Toyota introduced the U660E as a high-capacity 6-speed automatic transaxle for front-wheel-drive vehicles.

Unlike the older U151E 5-speed automatic, the U660E provides six forward gears. Therefore, Toyota could improve gear spacing while maintaining a compact transaxle design.

Technical Specifications

Transmission Code: U660E
Transmission Type: Automatic Transaxle
Number of Speeds: 6
Engine Application: 3.5L 2GR-FE V6
Drivetrain: FWD
Fluid Type: Toyota Genuine ATF WS
Condition: Used OEM/JDM
Origin: Japan

U660E Factory Gear Ratios

• 1st Gear: 3.300
• 2nd Gear: 1.900
• 3rd Gear: 1.420
• 4th Gear: 1.000
• 5th Gear: 0.713
• 6th Gear: 0.608
• Reverse: 4.148

Toyota designed these six ratios to provide responsive acceleration while also reducing engine speed during highway cruising.

Vehicle Applications

Toyota used the U660E transmission family in several vehicles equipped with the 3.5L 2GR-FE V6.

Potential applications include compatible versions of the:

• Toyota Camry V6
• Toyota Sienna V6 FWD
• Toyota Venza V6 FWD
• Lexus ES350

However, U660E does not automatically mean direct interchange across every vehicle and model year.

Toyota may use application-specific differences in the transmission, electronics, sensors, final-drive setup, valve body, mounts, or external components.

Therefore, verify the exact application before purchasing.

Toyota Camry V6 Application

Toyota introduced the U660E in the V6 Camry for the 2007 model year.

Compatible Camry applications use the 3.5L 2GR-FE V6 engine, front-wheel drive, and 6-speed automatic transmission.

If you need a replacement Camry transmission, compare your original unit with this JDM U660E before ordering.

Pay particular attention to the transmission code, case configuration, connectors, sensors, and vehicle production information.

Toyota Sienna V6 Application

Toyota also used U660E-family transmissions in compatible front-wheel-drive Sienna applications.

However, a Sienna transmission should not automatically be treated as identical to every Camry U660E simply because both carry the U660E designation.

Before installation, compare the complete transmission configuration and original vehicle information.

Toyota Venza V6 Application

Compatible front-wheel-drive Venza models with the 3.5L 2GR-FE V6 may also use a U660E-family transmission.

Nevertheless, confirm the transmission identification and external configuration before ordering.

AWD applications can use a different transmission configuration, so drivetrain verification remains essential.

Lexus ES350 Application

The Lexus ES350 also uses the 3.5L 2GR-FE V6 with U660E-family automatic transmissions in compatible applications.

Even so, verify the original transmission before assuming direct interchange with a Toyota application.

U660E vs. U660F

One letter makes an important difference.

The U660E serves front-wheel-drive applications. In contrast, the U660F supports all-wheel-drive applications.

Therefore, do not purchase a U660E simply because your vehicle uses a 3.5L 2GR-FE engine.

First confirm whether the vehicle uses FWD or AWD.

This distinction becomes especially important with models such as the Toyota Venza and Sienna, which may exist in different drivetrain configurations.

U660E vs. U760E

Toyota also used the U760E transmission family in various applications.

Although the names look similar, a U660E and U760E should not automatically be treated as interchangeable.

Differences can involve:

• Internal components
• Torque capacity
• Geartrain
• Valve body
• Electronics
• Sensors
• Case design
• Final drive
• Calibration

For that reason, always match the transmission identification and vehicle application.

JDM-to-USDM Fitment

This transmission came from a Japanese-market vehicle.

Although the core U660E may match compatible U.S.-market applications, some external differences can exist.

Therefore, compare the replacement transmission directly with your original USDM unit.

Check:

• Transmission case
• Bellhousing
• Electrical connectors
• Sensors
• Solenoids
• Valve body connections
• Transmission mounts
• Brackets
• Axle connections
• Cooler fittings
• Range switch
• Torque converter

When necessary, transfer compatible external components from your original transmission.

Most importantly, never force electrical connectors or modify the JDM transmission until you confirm compatibility.

What Is Included?

The sale includes the actual Toyota U660E automatic transmission shown in the product photos.

Depending on the individual inventory unit, attached components may include:

• U660E transmission assembly
• Transmission housing
• Internal geartrain
• Valve body
• Factory solenoids that remain attached
• Sensors that remain attached
• Electrical connectors
• Torque converter when pictured or specifically stated
• Brackets or mounts when pictured

Please review all actual product photos before purchasing.

J-Spec Auto Sports only guarantees components shown in the photographs or specifically stated as included.

Recommended U660E Installation Procedure

Correct installation plays an important role in the life of any replacement automatic transmission.

Therefore, diagnose the original transmission failure before installing the JDM replacement.

Diagnose the Original Failure

First, determine why the original U660E failed.

Internal wear can cause transmission problems. However, valve-body issues, solenoids, wiring, overheating, fluid contamination, cooling problems, or electronic faults can create similar symptoms.

Correcting the original problem helps protect the replacement transmission.

Flush the Transmission Cooler and Lines

Thoroughly flush the transmission cooler and cooler lines before connecting the replacement U660E.

A failed transmission can circulate metal particles, clutch material, and contaminated ATF throughout the cooling system.

Consequently, debris left inside the cooler can enter the replacement transmission immediately.

For that reason, clean the entire cooler circuit thoroughly.

If you cannot properly clean a contaminated cooler, replace it.

Do not skip this step.

Use Toyota Genuine ATF WS

Toyota specifies Toyota Genuine ATF WS for the U660E transmission.

Therefore, use the correct WS-specification fluid during installation.

Do not use older Toyota Type T-IV fluid in place of WS.

Likewise, avoid mixing incompatible transmission fluids.

Correct fluid helps maintain proper lubrication, hydraulic pressure, temperature control, and shift quality.

Do Not Reuse Old Transmission Fluid

Always fill the replacement transmission with fresh fluid.

Old ATF from a failed transmission can contain clutch material, metal particles, and other contamination.

As a result, reusing old fluid can damage the replacement U660E.

Inspect the Torque Converter

Next, inspect the torque converter and confirm compatibility.

Make sure the converter fully seats inside the transmission before installation.

Improper seating can damage the transmission pump during initial startup.

Therefore, never use the bellhousing bolts to force the transmission against the engine.

Inspect Accessible Seals

Check accessible transmission seals while the unit remains outside the vehicle.

Pay particular attention to:

• Axle seals
• Torque-converter seal
• Input area
• Case sealing surfaces
• Cooler connections

Replace any leaking or deteriorated seal before installation.

Doing this work now can prevent significant labor later.

Inspect the Transmission Mounts

Check all transmission and engine mounts before installation.

Worn or broken mounts can cause excessive drivetrain movement, vibration, and harsh engagement.

Therefore, replace damaged mounts before operating the replacement transmission.

Check the Rear Main Seal

The transmission removal process provides access to the engine’s rear main seal area.

Inspect this area carefully for engine-oil leakage.

If the rear main seal leaks, address the problem before installing the replacement transmission.

Verify Toyota WS Fluid Level Correctly

The U660E uses a temperature-sensitive fluid-level checking procedure.

Therefore, do not simply add fluid until it appears full.

Follow the correct Toyota WS ATF level procedure and verify fluid temperature during the final adjustment.

An incorrect fluid level can cause shifting problems, overheating, aeration, or transmission damage.

Scan the Vehicle Before Installation

Use a Toyota-compatible diagnostic scan tool before removing the original transmission.

Record all stored trouble codes.

Pay attention to:

• Transmission codes
• Solenoid codes
• Gear-ratio codes
• Engine codes
• ABS/VSC codes
• Communication faults

Instead of simply clearing the codes, diagnose any related problems.

Transmission Initialization and Relearn

After installation, the vehicle may require initialization, memory reset, or relearn procedures depending on the application and repair.

Therefore, use Toyota-compatible diagnostic equipment when required.

Follow the appropriate Toyota service procedure for the exact vehicle.

Initial Startup

Before road testing, verify:

• Correct ATF level
• No fluid leaks
• Proper electrical connections
• No warning lights
• Smooth Drive engagement
• Smooth Reverse engagement
• No abnormal noises

If you notice anything unusual, stop and diagnose the problem before driving.

Initial Road Test

Begin with a gentle road test.

During the test, confirm:

• Smooth Drive engagement
• Smooth Reverse engagement
• Proper 1–2 shift
• Proper 2–3 shift
• Proper 3–4 shift
• Proper 4–5 shift
• Proper 5–6 shift
• Correct downshifts
• Normal torque-converter operation
• No warning lights
• No abnormal noises
• No fluid leaks

Afterward, scan the vehicle again and recheck the ATF level according to Toyota procedures.

Common Signs of U660E Transmission Problems

A failing U660E can produce several symptoms.

Common examples include:

• Transmission slipping
• Delayed Drive engagement
• Delayed Reverse engagement
• Harsh shifting
• Shift flare
• Shuddering
• Gear-ratio trouble codes
• Solenoid codes
• Transmission warning lights
• Abnormal noises
• Burnt ATF
• Fluid leaks
• Failsafe operation

However, these symptoms do not always prove that the entire transmission has failed.

For example, valve-body problems, solenoids, wiring faults, incorrect ATF level, or electronic issues can create similar symptoms.

Therefore, diagnose the vehicle properly before replacing the transmission.

Why Choose a Low-Mileage JDM U660E?

A Japanese-import transmission can provide an OEM-based alternative to rebuilding a heavily worn or damaged transmission.

Key benefits include:

• Genuine Toyota OEM construction
• Low-mileage Japanese donor unit
• U660E transmission family
• 3.5L 2GR-FE V6 application
• 6-speed automatic configuration
• FWD drivetrain
• Actual transmission photos
• Inspection before sale
• 90-day warranty
• Nationwide shipping
• Affordable installation available

In addition, purchasing an actual inventory unit allows you to compare the transmission with your original before installation.

Why Buy From J-Spec Auto Sports?

J-Spec Auto Sports has specialized in Japanese engines, transmissions, and automotive parts for more than 20 years.

Our team supplies approximately 100 engines and transmissions each month to repair facilities, automotive enthusiasts, and vehicle owners throughout the United States.

Rather than operating as a general salvage yard, J-Spec Auto Sports focuses specifically on Japanese engines, transmissions, and drivetrain components.

Actual Product Photos

We provide actual photographs of this U660E transmission.

As a result, customers can examine the individual transmission before ordering instead of relying solely on generic stock photos.

Individual Transmission Identification

This listing carries Item ID 253803 and U660E identification.

That information provides an additional reference when comparing the transmission with your original unit.

Inspected JDM Inventory

Our team inspects drivetrain inventory before sale.

Furthermore, J-Spec Auto Sports focuses on sourcing quality engines and transmissions directly from Japan.

Affordable Installation Available

Customers can also ask J-Spec Auto Sports about professional installation.

Contact us for current installation pricing, availability, and scheduling.

Nationwide Shipping

J-Spec Auto Sports ships JDM engines, transmissions, and automotive parts throughout the continental United States.

Therefore, customers nationwide can purchase this U660E transmission without visiting our Virginia facility.

Local Virginia Pickup

Local pickup is available from J-Spec Auto Sports in Henrico, Virginia.

Customers from Richmond, Central Virginia, Northern Virginia, Maryland, Washington D.C., and surrounding areas can also arrange pickup or ask about installation.

Shipping

J-Spec Auto Sports can prepare this U660E transmission for freight shipment throughout the continental United States.

Shipping costs depend on:

• Destination ZIP code
• Commercial or residential delivery
• Liftgate requirements
• Freight-terminal availability
• Delivery location

Before accepting delivery, inspect the transmission and packaging for visible freight damage.

If damage exists, document it with the carrier immediately.

90-Day Warranty

J-Spec Auto Sports backs this Toyota U660E transmission with a 90-day limited warranty, subject to our current warranty terms and installation requirements.

Therefore, review the complete warranty policy before installation.

Also keep receipts for Toyota WS fluid, seals, cooler service, professional installation, and related maintenance.

Frequently Asked Questions

What is a Toyota U660E transmission?

The U660E is a 6-speed electronically controlled automatic transaxle that Toyota uses in compatible front-wheel-drive applications, including vehicles equipped with the 3.5L 2GR-FE V6.

Is the U660E a 5-speed or 6-speed transmission?

The U660E is a 6-speed automatic transmission.

What engine works with this U660E?

This transmission listing targets compatible applications equipped with Toyota’s 3.5L 2GR-FE V6 engine.

Will this transmission fit a Toyota Camry V6?

It can fit compatible Toyota Camry V6 applications that use the matching U660E configuration. However, verify the VIN, original transmission, connectors, sensors, and production information before ordering.

Will the U660E fit a Toyota Sienna?

Toyota used U660E-family transmissions in compatible FWD Sienna applications. Nevertheless, verify the complete transmission configuration before assuming direct interchange.

Will this transmission fit a Toyota Venza?

Compatible FWD Venza V6 applications may use the U660E family. However, AWD models can use a different transmission configuration, so verify the drivetrain before purchasing.

Will this transmission fit a Lexus ES350?

Compatible Lexus ES350 models also use U660E-family transmissions with the 3.5L V6. Even so, compare the original transmission and vehicle information before ordering.

What is the difference between U660E and U660F?

The U660E serves front-wheel-drive applications, while the U660F supports all-wheel-drive configurations. Therefore, the two should not automatically be treated as direct replacements.

What is the difference between U660E and U760E?

Both belong to Toyota’s six-speed automatic transmission family, but they have application and internal differences. Always match the exact transmission and vehicle rather than assuming interchange based on appearance.

What fluid does the U660E use?

Toyota specifies Toyota Genuine ATF WS for the U660E.

Can I use Toyota Type T-IV fluid?

No. Toyota specifies WS fluid for the U660E. Do not substitute older Type T-IV fluid.

Should I flush the transmission cooler?

Yes. Thoroughly flush the cooler and transmission lines before installation. Otherwise, contamination from the failed transmission can damage the replacement unit.

Can I reuse my old transmission fluid?

No. Always use fresh Toyota WS-specification ATF.

Does the U660E need a relearn after installation?

Depending on the vehicle and repair, initialization, memory reset, or relearn procedures may be necessary. Follow Toyota service procedures and use compatible diagnostic equipment when required.

Do I need to transfer parts from my original transmission?

Possibly. JDM-to-USDM differences may require transferring compatible sensors, brackets, switches, mounts, or other external components.

Is this transmission rebuilt?

No, unless specifically stated otherwise. This is a used, low-mileage JDM/OEM transmission rather than a rebuilt or remanufactured unit.

Does this transmission include a torque converter?

Only consider the torque converter included when the current product photos show it or the listing specifically states that it comes with the transmission.

Does this U660E have a warranty?

Yes. J-Spec Auto Sports provides a 90-day limited warranty, subject to current warranty terms.

Do you offer installation?

Yes. Affordable installation is available. Contact J-Spec Auto Sports for current pricing and scheduling.

Do you ship U660E transmissions nationwide?

Yes. J-Spec Auto Sports ships transmissions throughout the continental United States.

Can I pick up the transmission locally?

Yes. Local pickup is available from J-Spec Auto Sports in Henrico, Virginia.

How do I verify fitment?

Provide your vehicle year, make, model, VIN, engine size, drivetrain, original transmission identification, and clear photos of the original transmission.

For additional accuracy, compare the transmission case, connectors, sensors, axle connections, mounts, and cooler fittings.

Order Your JDM Toyota U660E Transmission

If your Toyota or Lexus needs a replacement automatic transmission, this low-mileage JDM U660E 6-speed automatic transmission provides an OEM-based option for compatible 3.5L 2GR-FE FWD applications.

J-Spec Auto Sports provides actual product photos, inspected JDM inventory, nationwide shipping, affordable installation, and a 90-day limited warranty.

Only one unit is currently available. Contact J-Spec Auto Sports with your VIN and original transmission information for fitment assistance before purchasing.

 

 

 

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