FNR5 2006-2008 Mazda 6 2.3L FWD – Remanufactured 5-Speed Automatic Trans

Description

Fulfill strict commercial fleet maintenance benchmarks with 178 lbs of dyno-certified drivetrain engineering that directs 156 horsepower through 5 computer-timed forward gear steps in the Mazda FNR5 Remanufactured Transmission engineered for 2006 to 2008 Mazda 6 sedans equipped with 2.3-liter four-cylinder engines. This remanufactured front-wheel drive transaxle resolves harsh 2-3 upshifts and restores refined driveline performance.

High-pressure die-cast aluminum casing walls prevent housing deflection under heavy road shocks. Remanufactured valve bodies incorporate hardened steel valves, wear-resistant Sonnax sleeves, and micro-ground separator plates to stop cross-circuit pressure loss. Carbon-metallic clutch packs dissipate thermal energy quickly through radial fluid channels. Dual 3/8-inch push-lock cooler ports facilitate direct cooling circuit connection. Total dry weight without torque converter measures 178 lbs, requiring 7.4 quarts of genuine transmission fluid.

Key Features of Mazda FNR5

Service center managers choose to buy Mazda FNR5 remanufactured transmission units to cure gear slip and erratic solenoid operation. Dynamometer testing verifies hydraulic pressures, gear noise levels, and clutch engagement response times.

• 275 PSI line pressure prevents friction plate burn during wide-open throttle acceleration
• 5 forward gear ratios provide immediate throttle response and low highway engine speeds
• Micro-honed valve bores prevent hydraulic fluid bleed to maintain steady circuit pressure
• Dynamic balanced torque converter eliminates lockup shudder and driveline vibration
• Linear shift solenoids execute computer commands within 45 milliseconds
• Mazda FNR5 planetary pinions resist gear tooth pitting under severe traffic conditions
• High-capacity internal fluid pump feeds steady lubrication to all planetary gear sets
• Radial grooved friction plates enhance cooling oil flow to avert surface burn

Torque Capacity Hydraulic Specifications

Rated for 165 lb-ft continuous input torque at 4,000 RPM, this transaxle handles high-demand city and highway driving routines with ease. Main hydraulic line pressures operate from 175 to 275 PSI to secure friction disc engagement under acceleration. Transmission fluid sump temperatures remain between 160°F and 185°F supported by a 36 kW auxiliary thermal heat exchanger. Forward mechanical gear steps include a 3.66:1 first gear, 2.06:1 second gear, 1.38:1 third gear, 1.00:1 fourth gear, and a 0.73:1 fifth gear overdrive ratio.

Driveline Differential Spline Fitment

Dual 28-tooth internal differential output splines seat front constant-velocity half-shaft yokes without lash. Bell housing dowel pins locate the casing true to the 2.3-liter engine block face within 0.003-inch runout tolerance. An internal parking pawl locks 1,180 lb-ft holding torque to secure parked vehicles on steep grades.

Transmission Calibration Service Rules

TCM adaptive shift learning cycles must be completed within 25 miles of installation to establish proper solenoid pulse widths. This unit is not engineered for track drag racing, extreme rock crawling, or gross combined vehicle weights exceeding factory chassis tow limits. Regular fluid maintenance prevents friction wear and maintains precise shift quality.

• Inspect transmission fluid level and appearance each shift using the dipstick
• Drain and replace specified automatic transmission fluid every 30,000 miles
• Examine cooler lines and mounting brackets for tightness every 12 months

Commercial Warranty Package Manifest

A 3-Year / 100,000-Mile commercial fleet warranty protects buyers against internal component defects and material failures. The robust wooden shipping crate contains the remanufactured transaxle, balanced torque converter, replacement cooler seal washers, vehicle installation guide, and an ATSG dynamometer test verification sheet.