U760E Front Planetary Carrier Assembly 34330-33040

The U760E Front Planetary Carrier Assembly 34330-33040 is a hard transmission component used in selected Toyota and Lexus six-speed automatic transmission applications. Toyota catalogs identify part number 34330-33040 as an Underdrive Planetary Gear Assembly, while transmission-parts suppliers also describe it as a U660E/U760E front planetary assembly. The assembly supports the planetary gears that transfer torque and create the required gear ratios inside the transmission.

This product is suitable for professional transmission workshops, rebuilders, distributors and wholesalers. Before ordering, customers should compare the original assembly, transmission code and part number to confirm the correct version.

U760E Planetary Gear Assembly Function

The planetary gear system allows an automatic transmission to produce multiple gear ratios from a compact set of gears. A planetary assembly works through the interaction of a sun gear, planet gears, carrier and ring gear.

The U760E Front Planetary Carrier holds the planet gears in their correct positions and allows them to rotate around the center axis of the gearset. Correct clearances and smooth gear movement are important for quiet operation and reliable power transfer.

During rebuilding, technicians should inspect the assembly for:

• Worn or damaged gear teeth
• Excessive play in planet gears
• Worn carrier pins or shafts
• Bearing damage
• Cracks or deformation
• Abnormal noise or rough rotation

A damaged planetary assembly can create noise, rough operation or mechanical failure, but complete diagnosis should be performed before replacement.

34330-33040 Toyota Underdrive Planetary Gear Assembly

Toyota identifies 34330-33040 as an Underdrive Planetary Gear Assembly. Parts catalogs also list the compact number 3433033040. Specialist transmission suppliers cross-reference this assembly to U660E and U760E transmission applications.

The term “front planetary carrier” is commonly used in the transmission-parts market, while Toyota’s catalog wording emphasizes the underdrive planetary gear assembly. Using both descriptions helps professional buyers identify the component by workshop terminology or Toyota part number.

For accurate matching, customers can provide:

• Transmission model
• Original planetary assembly photos
• Toyota reference number
• Vehicle information
• Gear and carrier design
• Required quantity

If the transmission has previously been rebuilt, physical comparison is recommended because internal hard parts may have been replaced before.

U760E and U660E Application Matching

The 34330-33040 planetary assembly is listed by specialist suppliers for U660E and U760E family transmissions. The U760E/U760F is a six-speed automatic transmission family used in selected Toyota and Lexus applications.

Although the same planetary reference can appear across related transmission models, customers should not purchase solely according to vehicle name. Transmission code, production configuration and original hard-part design should be checked first.

When the gearbox is already disassembled, clear photographs of the original carrier, gears and spline areas are useful for confirming the correct assembly.

Professional U760E Transmission Rebuilding

A planetary carrier is normally replaced during internal transmission rebuilding rather than routine maintenance. When the original assembly shows mechanical wear, technicians should inspect surrounding hard parts and lubrication areas before installing a replacement.

Related inspection items may include:

• Sun gears and ring gears
• Input shaft components
• Bearings and thrust washers
• Friction and steel plates
• Clutch pistons
• Bushings
• Transmission fluid passages

Metal debris from a failed gearset can circulate through the transmission. The oil pan, filter, valve body and lubrication passages should therefore be checked and cleaned as required during rebuilding.

The U760E Front Planetary Carrier should be installed using professional transmission assembly procedures and correct clearances.

Related U760E Transmission Parts

We supply various repair components for U760E, U660E and other automatic transmissions, including:

• Transmission overhaul kits
• Friction plate kits
• Steel plate kits
• Bearings and bushings
• Clutch pistons
• Valve body components
• Transmission filters
• Oil seals and gaskets
• Other transmission hard parts

Customers rebuilding complete transmissions can send us a purchasing list, original component photos and required quantities for product matching.

U760E Front Planetary Carrier Wholesale Supply

We supply automatic transmission hard parts to professional workshops, gearbox rebuilders, distributors and wholesalers worldwide.

For U760E Front Planetary Carrier Assembly 34330-33040 inquiries, we can provide current product photos, availability information, packing details and wholesale quotations. Mixed transmission parts orders are welcome.

Contact Us for U760E Transmission Parts

If you are looking for a U760E Front Planetary Carrier Assembly 34330-33040 or other Toyota automatic transmission hard parts, contact us with the transmission model, original photos and required quantity.

Providing the original part number and clear images of the gear assembly can help us confirm the correct version before quotation and shipment.