A650E 2000 Lexus GS400 4.0L RWD – Remanufactured 5-Speed Automatic Trans

Description

Prevent clutch plate glazing and solenoid valve stick through 165 PSI fluid circuit pressure and 310 lb-ft continuous torque capacity during extreme summer commercial executive passenger transport schedules. Operations managers install the Lexus GS400 5-Speed Automatic Transmission in 2000 models to eliminate shift hesitation and preserve vehicle uptime.

A rigid die-cast aluminum casing counters high torque deflection behind 4.0L quad-cam 32-valve 1UZ-FE V8 engines. Rebuilt valve bodies feature reamed hydraulic bores fitted with hard-anodized Sonnax sleeves that eliminate internal fluid cross-bleed. High-energy carbon composite clutch discs dissipate thermal loads across steel reaction plates. Specifications include a 170-pound dry weight without torque converter, an 8.7-quart Toyota Type T-IV fluid capacity, and standard 3/8-inch threaded cooler line ports.

Key Features of Lexus GS400 V8

Fleet operators buy Lexus GS400 V8 remanufactured transmission units to restore factory driveline refinement across executive car services. Every remanufactured 5-speed transmission integrates updated internal wear components designed to outperform original factory durability standards under severe transit duty.

• 165 PSI regulated pump pressure holds clutch discs tight under maximum V8 acceleration.
• 5 forward gear ratios provide efficient engine RPM control across city and highway routes.
• Hard-anodized valve bore sleeves eliminate internal hydraulic pressure bypass inside the body.
• High-temperature carbon friction plates withstand thermal stress during continuous stop-and-go driving.
• Balanced lockup torque converters stop driveline shudder during high-speed cruising.
• High-displacement trochoid oil pumps maintain steady fluid volume across elevated temperatures.
• A Lexus GS400 V8 transmission module utilizes calibrated pulse-width modulated solenoids.
• Reinforced planetary gear pinions resist mechanical wear under repeated throttle inputs.

Hydraulic Limits V8 Matrix

Main line fluid circuits maintain between 125 and 165 PSI pump pressure to lock clutch packs without slip under load. Operating sump temperatures stay within a stable 155°F to 185°F range to safeguard transmission fluid integrity. The gear train withstands 310 lb-ft continuous input torque at 4,000 RPM under High-Mileage Transit service conditions. Auxiliary cooler channels dissipate 24 kW of heat through internal radiator heat exchangers. Gear ratios measure 3.35:1 in first gear, 2.18:1 in second gear, 1.42:1 in third gear, 1.00:1 in fourth, and 0.75:1 in overdrive.

Rear Flange Driveline Connection

A precision-machined 3-bolt companion flange connects straight with factory Lexus rubber giubo flex discs and driveshafts. The internal park pawl mechanism holds up to 1,550 lb-ft holding torque to hold passenger sedans on steep grades. Mechanics must check flex disc condition and verify companion flange runout within 0.002 inch.

Sedan Drivetrain Maintenance Protocol

Pulse-width modulated shift solenoids communicate with the vehicle powertrain control module to coordinate precise gear shift sequences. Note that this 5-speed transmission is not engineered for track drag strip racing, extreme aftermarket supercharger additions, or commercial cargo towing exceeding vehicle gross weight ratings.

• Check transmission fluid level and inspect fluid color on dipsticks each shift.
• Drain fluid pan and replace the internal pickup filter every 30,000 miles.
• Flush radiator cooler lines and verify pump circuit pressure every 12 months.

Fleet Warranty Delivery Container

Purchase includes a 3-Year / 100,000-Mile commercial fleet warranty for complete operational peace of mind. The heavy wooden transport container holds the complete remanufactured transmission, a balanced lockup torque converter, new tailshaft seals, an installation manual, and an ATSG dyno verification test sheet with fluid pressure graphs.