A340F 1996-1999 Toyota 4Runner 3.4L AWD/4WD – Remanufactured 4-Speed Automatic Trans

Description

Channeling 217 lb-ft of continuous input torque straight toward four-wheel-drive transfer cases under 240 PSI pump force, this Toyota 4Runner A340F Remanufactured Transmission resolves gear slip on 1996 to 1999 Toyota 4Runner 3.4L 4WD models. Municipal utility fleets secure dependable traction across demanding regional routes.

High-tensile die-cast aluminum casting walls withstand driveline shudder along uneven road grades. Nitrided steel sun gear shafts mate with induction-hardened planetary carriers to eliminate gear tooth fracture risks under abrupt load spikes. Upgraded accumulator sleeves prevent line fluid leakage across internal passages. Dry weight totals 190 lbs while housing 9.5 quarts of DEXRON-III fluid plumbed through dual transmission oil cooler fittings.

Key Features of Toyota 4Runner

Internal clutch burn during winter utility transit routes compels fleet managers to buy Toyota 4Runner remanufactured transmission units. Factory-upgraded hydraulic valve bodies restore crisp gear transitions under continuous four-wheel-drive power splits.

• A 2.80:1 first gear ratio yields strong low-speed vehicle departure force on steep snow-covered grades
• Nitrided planet gear teeth prevent fatigue pitting under continuous 217 lb-ft torque distribution cycles
• Dual-lip fluoroelastomer piston seals maintain hydraulic clamping pressure during extreme sub-zero weather
• Hardened steel clutch drums transfer engine power straight to transfer cases without distortion
• The Toyota 4Runner A340F platform delivers balanced oil feed to clutches under severe operating conditions
• Micro-honed valve bores fitted with hard-coat sleeves stop intermittent third-gear shift flare
• Automated dyno diagnostics measure solenoid circuit resistance down to 0.1 ohm before final crating

Torque Management Fluid Dynamics

Four forward gear steps progress from a deep 2.80:1 low gear up to a fuel-efficient 0.70:1 top overdrive ratio. Operating clutch fluid circuits generate 160 to 240 PSI line pressure to guarantee instant clutch plate clamping under full throttle. Sump fluid operating temperatures remain stabilized between 160°F and 190°F during intense highway operations. Transmission heat dissipation reaches 760 BTU per minute through high-volume external cooler circuits. Input torque capacity handles 217 lb-ft at 4,800 RPM across demanding fleet shuttle shifts.

All Wheel Drive Spline Interface

Interfacing with the transfer case drive collar, the precision-machined output spline prevents driveline lash under rapid power transfers. Ductile iron case extensions withstand torque deflection during abrupt front-to-rear traction shifts. The internal mechanical parking pawl resists 1,500 lb-ft of static holding torque on steep commercial grades. Output shaft axial runout checks confirm alignment under 0.0025 inches total indicator reading.

Electronic Solenoid Maintenance Standards

Execute complete TCM shift adaptation relearn routines before putting vehicles into commercial service. 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 transmission control module data streams to verify correct torque converter lockup slip rates
• Every 30 days check fluid color and saturation levels on level shop floors at operating temperature
• Every 30,000 miles drain sump fluid and clean pan magnets to prevent metallic debris from scoring valve bores

Nationwide Fleet Warranty Coverage

Commercial fleet operations receive complete coverage through our 3-Year / 100,000-Mile commercial fleet warranty on internal components. Crated shipments include one remanufactured transmission, an engine-balanced torque converter, replacement cooler connection o-rings, complete technical documentation, plus stamped dyno inspection charts.