A343F 1998-2000 Lexus LX470 & Toyota Land Cruiser 4.7L AWD/4WD – Remanufactured 4-Speed Automatic Trans

Description

Propelling full-time all-wheel-drive platforms across demanding mountain corridors under 240 PSI pump force with 320 lb-ft torque handling, this Lexus Toyota A343F Remanufactured Transmission restores peak acceleration for 1998 to 2000 Lexus LX470 and Toyota Land Cruiser 4.7L models. Fleets gain dependable traction and eliminate slip during continuous expedition transit runs.

Die-cast magnesium-aluminum casing construction eliminates housing deflection under sudden traction shifts. Micro-polished separator plates pair with updated valve regulator sleeves to halt hydraulic pressure decay within critical clutch channels. Carbon-metallic friction plates feature radial cooling grooves that evacuate thermal energy into 11.0 quarts of Toyota Type T-IV fluid. Operating at a dry weight of 205 lbs, this transaxle integrates dual threaded cooler ports for sustained cooling balance.

Key Features of Lexus Toyota

Torque converter clutch shudder during wet winter transit runs prompts maintenance supervisors to buy Lexus Toyota remanufactured transmission units. Recalibrated electro-hydraulic valve bodies restore precise shift timing across extended commercial fleet duty cycles.

• A 2.80:1 first gear ratio multiplication delivers refined vehicle departure acceleration from stationary stops
• Tolerances inside the precision-machined planetary carrier remain under 0.0025 inches to halt gear whine
• Operating friction circuits use carbon-metallic plates that resist glazing during high-heat operation
• Channeling fluid through remanufactured valve bodies stops shift hesitation between second and third gears
• Severe fleet usage requires the Lexus Toyota A343F package to maintain consistent line pressure stability
• Hardened steel planetary gears resist tooth surface fatigue under continuous V8 engine loads
• Computerized dyno hydro-pulse testing verifies solenoid pressure response curves prior to crate packaging

Hydraulic Line Pressure Calibrations

A 2.80:1 first gear step transitions through four forward ratios toward a 0.75:1 overdrive step that drops highway engine revolution counts. Operating clutch fluid circuits maintain 160 to 240 PSI pump pressure to stop internal slip during heavy acceleration events. Internal transmission fluid temperatures stay stabilized between 160°F and 190°F during long interstate hauls. Fluid circuits push 860 BTU per minute of heat energy straight toward the external cooling unit. Continuous input torque ratings withstand 320 lb-ft at 4,800 RPM without internal gear deflections.

All Wheel Drive Spline Interface

Transferring engine rotation straight through precision-ground internal splines, the transfer case interface resists driveline lash. High-tensile alloy case construction prevents bearing pocket deformation during severe load changes. Internal parking pawl mechanisms hold 1,700 lb-ft of static rollback torque on 18-degree loading docks. Precision dial indicators measure total output shaft runout under 0.0025 inches total indicator reading.

Transmission Adaptation Maintenance Protocols

Command instantaneous electronic gear engagement through complete TCM throttle position calibration sequences following mechanical installation. This transmission is not engineered for track drag racing, extreme rock crawling, or gross combined vehicle weights exceeding factory chassis tow limits.

• Each shift scan electronic transmission codes using professional diagnostic scanners to confirm zero solenoid fault codes
• Every 30 days check fluid level on level ground at 175°F to maintain correct hydraulic immersion
• Every 30,000 miles drain contaminated Type T-IV fluid and replace pan filter elements to protect internal valve sleeves

Commercial Fleet Crate Package

Uninterrupted fleet mobility is backed by a 3-Year / 100,000-Mile commercial fleet warranty covering parts plus labor nationwide. Every secure shipping crate contains one fully remanufactured transmission unit, a balanced torque converter, cooler line seal washers, installation instructions, plus verified dynamometer test printouts.