FNR5 2012-2013 Mazda 3 2.0L FWD – Remanufactured 5-Speed Automatic Trans

Description

Prevent forward clutch glazing under 150 lb-ft sustained torque output while maintaining 175°F fluid sump thermal stability during demanding municipal route service operations using the Mazda FNR5 Remanufactured Transmission built for 2012 to 2013 Mazda 3 passenger cars with 2.0-liter engines. This remanufactured front-wheel drive transaxle restores clean gear changes and eliminates intermediate shift shudder.

High-integrity die-cast aluminum transaxle casings withstand torsional load transfers without housing cracking. The remanufactured valve body features hard-anodized valve bore sleeves and micro-honed spool bores to halt hydraulic fluid cross-leakage. Sintered bronze friction plates work with carbon-metallic clutches with radial heat dissipation grooves. Fluid passes through threaded 3/8-inch inverted flare cooler fittings linked to chassis coolers. Dry weight measures 176 lbs without torque converter, while fluid capacity requires 7.2 quarts of approved transmission fluid.

Key Features of Mazda FNR5

City fleet operators choose to buy Mazda FNR5 remanufactured transmission units to restore positive shift control in high-mileage sedans. Extensive dyno cell load testing validates hydraulic line pressure regulation throughout every forward gear step.

• 270 PSI hydraulic circuit pressure eliminates clutch slipping under brisk acceleration
• 5 computer-controlled forward gear ratios optimize four-cylinder engine power and fuel economy
• Hard-anodized valve sleeves restore hydraulic seal integrity to stop shift flares
• Precision balanced torque converter prevents lockup clutch shudder during city driving
• Pulse-width modulated solenoids direct fluid volume for precise clutch engagement timing
• Mazda FNR5 planetary gear sets undergo precision alignment to reduce operational noise
• High-output internal fluid pump channels continuous lubrication to all rotating parts
• Carbon-metallic friction discs resist thermal breakdown under sustained stop-and-go transit

Hydraulic Pressure Torque Ratings

Engineered to transfer 150 lb-ft continuous input torque at 4,000 RPM, this front-wheel drive transaxle provides dependable power delivery across severe commercial transit routes. Operating line pressures span 170 to 270 PSI to lock clutches securely during acceleration. Fluid sump temperatures stay regulated from 160°F to 185°F supported by a 34 kW external cooling loop. Mechanical gear steps feature 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.

Differential Spline Driveline Interface

Dual 28-spline differential outputs engage factory constant-velocity half-shafts with zero rotational play. Bell housing bolt patterns locate concentric to the 2.0-liter engine block within 0.003-inch runout tolerance. An internal parking pawl mechanism withstands 1,150 lb-ft holding force to anchor vehicles on steep hillsides.

Shift Adaptation Maintenance Schedule

Transmission control module adaptive relearn procedures calibrate shift solenoid timing over the initial 20 miles of vehicle operation. This unit is not engineered for track drag racing, extreme rock crawling, or gross combined vehicle weights exceeding factory chassis tow limits. Strict fluid service preserves internal friction life and prevents valve body varnish formation.

• Check automatic transmission fluid level and color each shift using the dipstick
• Drain and refill specified synthetic automatic transmission fluid every 30,000 miles
• Inspect external transmission cooler lines and rubber hoses every 12 months

Warranty Terms Shipping Manifest

A 3-Year / 100,000-Mile commercial fleet warranty protects fleet investments against unexpected mechanical defects. The secure shipping crate contains the remanufactured transaxle unit, precision balanced torque converter, replacement cooler line crush washers, detailed vehicle installation instructions, and an ATSG dyno verification test sheet.