90301-48035 U660E U760E Transmission Planetary Gear Lock Nut for Camry Highlander ES350 RX350 Replacement

This is 100% brand new high-carbon steel quenched planetary carrier lock nut, OEM Number: 90301-48035. It is universally applicable to Toyota & Lexus U660E / U760E 6-speed automatic transmissions.

This nut is a core locking fastener for the transmission front planetary carrier assembly. It firmly fixes the planetary gear set to prevent axial play, looseness and gear offset during high-torque operation. The original nut is prone to metal fatigue, thread slipping and loosening after long-term use or disassembly, causing gearbox abnormal rattling noise, shifting jerk, acceleration slipping and premature planetary gear wear. Our high-hardness replacement nut completely solves the above problems and is a necessary replacement part for U660E / U760E gearbox overhaul.

Universal Transmission Model:U660E / U760E 6AT

• Standard OE Spec 90301-48035: Strictly produced according to OEM drawing standards, thread pitch, outer locking notch and outer diameter are 100% consistent with original parts, perfectly universal for U660E and U760E gearboxes.
• High-Carbon Steel Integral Quenching: Adopts high-strength carbon steel material, overall quenching and tempering heat treatment, high surface hardness, strong compression resistance, not easy to slip teeth, deform or loosen under long-term high torque load.
• Completely Fix Common Gearbox Faults: Effectively solve planetary carrier looseness, gearbox rattle noise, shifting jerk, acceleration slipping and delayed shifting caused by failed original lock nut.
• Necessary Overhaul Replacement Part: The lock nut will produce metal fatigue after disassembly. Reuse of old nuts is extremely risky. It must be replaced with a new one during gearbox planetary overhaul.
• Small MOQ & Fast Delivery: Support 1PC sample order, in-stock goods can be shipped within 3-7 working days, support global express and sea freight bulk shipment.

1. Raw material hardness and composition inspection to ensure high-strength steel quality;
2. Thread pass and stop gauge full inspection to ensure precise assembly;
3. Outer locking notch size precision detection to match special disassembly tool;
4. Anti-rust salt spray test, adapt to long-term ATF oil immersion environment;
5. Final overall dimension and appearance inspection before delivery.

1. Professional transmission technicians and special U660E/U760E nut sleeve tools are required for installation;
2. It is forbidden to reuse the disassembled old lock nut, which has hidden danger of loosening;
3. After installation, test run to confirm no abnormal noise and stable shifting.

• Material: High Carbon Steel (Hardened)
• OE Number: 90301-48035
• Applicable Gearbox: U660E / U760E 6AT
• Packing: Anti-rust independent packaging + export carton
• Lead Time: 3-7 Working Days
• Shipping Method: DHL / FedEx / UPS / EMS / Sea Freight

We are a professional manufacturer and exporter of automatic transmission spare parts, focusing on AT/CVT/DCT gearbox overhaul parts. Mainly supply lock nuts, planetary gears, oil pumps, valve bodies, overhaul kits and other core accessories. We provide high-quality OEM-standard transmission parts for global auto repair shops and auto parts wholesalers with stable quality and competitive factory price.

• Q1: What is the OE part number of this lock nut? A1: Standard OEM number:90301-48035.
• Q2: Is it suitable for both U660E and U760E? A2: Yes, this nut is 100% universal for Toyota/Lexus U660E and U760E 6AT transmission.
• Q3: Can the old nut be reused? A3: Not recommended! The lock nut will lose preload after disassembly. Reuse will cause planetary carrier looseness and gearbox failure, must replace new one.
• Q4: What problems can this part solve? A4: Fix gearbox abnormal noise, shifting jerk, acceleration slipping and planetary gear wear caused by loose lock nut.