AW55-50SN 2003-2004 Volvo S60, V70 2.4L FWD – Remanufactured 5-Speed Automatic Trans

Description

Command 245 lb-ft input torque through a 1.02:1 cruising gear ratio engineered to hold stable transmission sump temperature along extended highway transit corridors. The Volvo AW55-50SN Remanufactured Automatic Transmission fits 2003 to 2004 S60 and V70 2.4L front-drive platforms. Re-engineered hydraulic circuits hold high line pressure during demanding municipal fleet patrol assignments.

Reinforced die-cast A380 aluminum cases resist housing deflection under severe road surface impacts. Valve bodies undergo complete hydraulic vacuum checks before installation of Sonnax hard-coat anodized bore sleeves that neutralize pressure bypass. High-energy carbon-metallic clutches run against surface-ground steel reaction discs. Outer housing envelopes include quick-connect cooler ports, 7.6 quarts JWS 3309 fluid capacity, and an overall dry mass of 183 lbs.

Key Features of Volvo AW5550SN

Fleet directors buy Volvo AW55-50SN remanufactured transmission units to eliminate harsh neutral-drop downshifts on city transit sedans. Upgraded linear solenoid packages ensure repeatable shift timing under prolonged hot-weather transit operations.

• Hardened valve body sleeve inserts prevent cross-bore hydraulic bleeding under high-heat operation
• Segmented friction clutch plates optimize transmission fluid flow across internal friction faces
• Fully balanced lockup torque converter units prevent torsional crankshaft harmonics at highway cruise
• Surface-finished Volvo AW5550SN planet gear assemblies reduce geartrain whine under heavy load
• High-volume gerotor oil pump designs provide 260 PSI line pressure during high-load low-speed crawling
• Tempered ductile iron planetary gear carriers resist pin elongation under severe shock events
• Deep steel transmission fluid pans feature dual high-gauss magnets for metallic particulate capture

Engine Torque Reduction Limits

System hydraulic line pressure limits regulate between 195 and 260 PSI during wide-open throttle maneuvers. Fluid temperatures balance between 165°F and 185°F under continuous cross-country highway transport cycles. Maximum continuous input torque ratings reach 245 lb-ft at 3,200 RPM in severe commercial duty applications. Internal heat rejection reaches 410 BTU per minute through external oil-to-air cooling radiators. Forward gear reductions include 4.77:1 first, 3.00:1 second, 1.96:1 third, 1.32:1 fourth, and 1.02:1 fifth.

Front Halfshaft Output Standards

Dual 24-spline internal differential outputs accept original equipment front halfshafts without driveline vibration. Mechanical differential components withstand 1,150 lb-ft static torque during sudden traction recovery events. Axle seal face runout measures within 0.0013 inches on precision dial indicators to protect differential seals.

Operational Safeguards Service Rules

Service technicians must perform an electronic TCM shift adapt relearn sequence using diagnostic scan software before regular route deployment. This transmission is not engineered for competition sled pulling events, radical suspension drop brackets, or gross combined vehicle weight ratings exceeding vehicle placards.

• Inspect external oil lines and electrical wiring harness connections every 50 hours
• Extract contaminated fluid and wash internal collection magnets every 30,000 miles
• Perform complete hydraulic fluid changes with approved JWS 3309 transmission oil every 12 months

Commercial Warranty Freight Manifest

Purchases include a full 3-Year / 100,000-Mile commercial fleet warranty agreement covering commercial fleet usage. Inside the wooden shipping container rests a remanufactured automatic transmission unit, balanced torque converter, new cooler line clip seals, and a printed dyno test validation report.