U140F 1999-2003 Lexus RX300 3.0L AWD/4WD – Remanufactured 4-Speed Automatic Trans

Description

Heat-treated A380 aluminum casing architecture absorbs severe structural driveline torque shock while carbon-metallic friction plates handle 222 lb-ft during grueling vocational work truck operation in the Lexus U140F Remanufactured Transmission built for 1999 to 2003 RX300 3.0-liter all wheel drive crossover vehicles.

Rigid aluminum transaxle casings integrate mounting provisions for four-wheel drive transfer cases to distribute power to both axles. The internal hydraulic circuit features hard-anodized valve bore sleeves, high-flow oil pumps, and upgraded clutch reaction plates. Driveline hardware specs feature 3/8-inch cooler line fittings, 9.2-quart total fluid capacity, and an overall dry unit mass of 192 lbs.

Key Features of Lexus U140F

All-weather regional shuttle fleets buy Lexus U140F remanufactured transmission units to maintain passenger transit schedules across winter mountain corridors. Remanufactured valve bodies eliminate gear hunting and restore positive all wheel drive acceleration.

• Hard-anodized valve sleeves halt hydraulic fluid bypass to maintain high line pressure
• High-energy carbon friction discs withstand severe all wheel drive slip heat without glazing
• Furnace-brazed torque converter impellers prevent stator deflection under full throttle launches
• Pulse-width modulated solenoids direct fluid precisely to eliminate harsh gear shifts
• Lexus U140F automatic transaxles undergo full hydro-pulse dyno cell validation before boxing
• Induction-hardened planetary gear teeth resist surface pitting under heavy torque loads
• Magnetic collection inserts inside the fluid pan capture ferrous particulate to protect valves

AWD Hydraulic Line Pressure Limits

Built for all wheel drive commercial fleet transit, this four-speed automatic transaxle channels 222 lb-ft continuous input torque at 4,400 RPM under 170 to 225 PSI main line pressure. Sump temperature stabilizes between 165°F and 188°F under continuous driving. Gear reduction steps feature 3.938:1 first, 2.194:1 second, 1.411:1 third, and 0.703:1 fourth overdrive, releasing 54 BTU per minute across cooling circuits.

Transfer Case Bevel Gear Interface

Power transfers through internal splines engineered to drive the companion transfer case module for all wheel drive power delivery. Centerline runout checks show under 0.0017 inches of variation across full rotational sweeps. Precision-machined transfer case mounting faces ensure exact transfer gear mesh alignment.

All Wheel Drive Automatic Maintenance

Confirm that tire circumferences match across all four wheels to prevent continuous transfer gear stress and fluid overheating. This automatic all wheel drive transaxle is not engineered for extreme rock crawling, heavy trailer towing, or overloaded cargo operations.

• Inspect transfer case adapter seal joints for oil weeping each shift
• Drain and renew automatic fluid and differential gear oil every 30,000 miles
• Inspect transmission subframe isolation bushings every 12 months

Commercial Drivetrain Protection Package Inclusions

Backed by an ironclad 3-Year / 100,000-Mile commercial fleet warranty, this gearbox guarantees exceptional durability. The heavy shipping container encloses one remanufactured automatic all wheel drive transaxle, balanced torque converter, transfer case gasket set, and a dyno-tested quality report.