AW55-50SN 2005-2006 Nissan Altima 3.5L FWD – Remanufactured 5-Speed Automatic Trans

Description

Featuring a 4.77:1 first gear ratio alongside 270 PSI hydraulic pressure control, this unit accelerates commercial sedans without shift hesitation. The Nissan Altima AW55-50SN Remanufactured Automatic Transmission equips 2005 to 2006 Altima 3.5L front-drive platforms. Remanufacturing millwrights engineer each internal circuit to exceed factory durability thresholds under grueling high-mileage courier operational tasks.

High-integrity die-cast A380 aluminum casing structures resist torsional split under aggressive engine torque output. Precision-machined valve bores feature hard-anodized Sonnax sleeves that prevent hydraulic fluid escape under elevated sump temperatures. Sintered bronze reaction discs match with carbon-metallic friction packs featuring radial oil disbursement grooves. The unit features quick-connect cooler ports, holds 8.0 quarts fluid volume, and weighs 189 lbs dry without fluid.

Key Features of Nissan Altima AW5550SN

Fleet operators buy Nissan Altima AW55-50SN remanufactured automatic transmission units to eliminate harsh second-to-third shift flares across high-mileage executive sedans. Restored internal hydraulic circuits maintain consistent line pressure under prolonged commercial fleet operation.

• Hard-coat anodized valve body bore sleeves halt cross-circuit leakage in critical shift circuits
• Multi-groove carbon clutch plates endure severe thermal cycling without plate distortion
• Electronic lockup torque converter units undergo precision balance checks to eliminate high-RPM vibration
• Micro-honed Nissan Altima AW5550SN planetary gear sets minimize gear lash under heavy loads
• High-flow positive displacement pumps output consistent 270 PSI fluid volumes across all speeds
• Cryogenically treated sun gear shafts withstand extreme reverse-to-drive driveline stress
• Internal magnetic fluid collector bars capture ferrous debris before fluid reaches valve bores

Dynamic Thermal Energy Dispersal

Regulated internal operating oil pressure spans 205 to 270 PSI across all forward gear selector ranges. Transmission sump oil temperature stabilizes between 165°F and 185°F under full thermal stabilization tests. Continuous input torque tolerates 255 lb-ft at 4,400 RPM in severe commercial duty applications. Auxiliary cooling line flow disperses 430 BTU per minute through external plate heat exchangers. True gear ratios measure 4.77:1 first, 3.00:1 second, 1.96:1 third, 1.32:1 fourth, and 1.02:1 fifth.

Front Differential Spline Alignment

A precision-broached 29-spline differential interface connects directly with original equipment front drive axle shafts. Internal differential pinion gears hold 1,200 lb-ft static torque during aggressive curb acceleration. Total drive axle runout checks below 0.0013 inches on precision dial indicators to protect differential seals.

Pre-Service Inspection Maintenance Protocol

Service technicians must reset transmission adaptation parameters using diagnostic software before releasing vehicles to road service. This transmission is not engineered for competition drag racing events, custom nitrous oxide systems, or unapproved towing weights.

• Inspect external fluid cooler hoses and harness joint seals every 50 hours
• Drain transmission fluid and inspect pan magnet debris levels every 30,000 miles
• Evacuate and replace full transmission fluid volume with approved oil every 12 months

Freight Crate Component Roster

This drivetrain package includes a 3-Year / 100,000-Mile commercial fleet warranty contract for fleet service. Inside the heavy timber container rests a remanufactured automatic transmission, precision-balanced torque converter, replacement cooler line retainers, and a printed dyno test sheet.