BW4412 Transfer Case for Ford 2008-2010 Explorer Sport Trac w/o Shift Motor

Description

Routing constant open differential all-wheel torque, BorgWarner BW4412 Constant Marine Gearbox units provide dependable torque transfer with a 1.00:1 ratio for 2008 to 2010 Ford Explorer Sport Trac vehicles without shift motors. Rated for 320 continuous horsepower with a 5,400 RPM input ceiling, this unit directs balanced power across front and rear drive axles during vessel staging on harbor ramps.

Constructed with an extra-thick die-cast magnesium casing split horizontally, this unit minimizes bore distortion under severe tractive loads. A central differential gearset works with a high-strength Morse drive chain to modulate torque distribution between front and rear driveshafts without electronic actuators. High-capacity needle and tapered roller bearings absorb combined radial and axial thrust. The 1.2-quart lubricant capacity flows through internal channels, keeping roller bearings lubricated under continuous duty cycles.

Key Features of BorgWarner BW4412 Constant

Shipyard logistics managers buy BorgWarner BW4412 Constant marine gearbox units to maintain dependable front axle pull on algae-covered slipways. This differential package divides torque evenly between front drive wheels, maintaining forward vehicle momentum across uneven shipyard grounds.

• Full-time all-wheel drive configuration eliminates shift motor failures on wet harbor ramps
• Internal center differential divides torque smoothly between front and rear drive axles
• Input splines interface straight with Ford automatic transmissions
• BorgWarner BW4412 Constant components maintain gear mesh alignment under shock torque
• High-capacity Morse drive chain transfers front driving torque without elongation
• Internal oil pump maintains continuous lubrication across mainshaft roller bearings
• Rear companion flange connects straight to independent rear suspension driveshafts
• Front companion flange connects straight to constant-velocity front driveshafts

Continuous Drive Torque Thresholds

Operating under medium duty commercial ratings, this front carrier manages 1,820 lb-ft of continuous input torque at 2,400 driveline RPM. The direct 1.00:1 ratio yields high road speed while shedding drivetrain heat through natural casing radiation. Differential sump temperatures hold steady between 150°F and 175°F under continuous vehicle transit. Heat dissipation across the magnesium casing reaches 2.2 kW during protracted four-wheel drive engagement. Hypoid gear mesh geometries maintain teeth contact patterns across full throttle towing spikes without localized metal fatigue.

Companion Flange Mating Standards

The companion pinion flange accommodates constant-velocity driveshafts with a precision-drilled four-bolt pattern. Dual opposing tapered roller bearings resist 3,100 pounds of continuous axial pinion thrust. Dial indicator alignment inspection must show less than 0.0025 inches radial runout relative to the front driveshaft centerline.

Scheduled Fluid Maintenance Intervals

Check automatic transmission fluid levels through the upper fill plug port prior to engaging vehicles on wet slipway ramps. As an explicit negative filter, this passenger vehicle transfer case is not engineered for direct inboard commercial vessel propulsion shafts or heavy vessel winches.

• Inspect transfer case fluid level and casing joint integrity each shift before boat ramp operation
• Examine front driveshaft CV joints and output shaft seals every 250 hours of fleet use
• Drain Mercon transmission fluid and clean internal oil pump pickup screen every 12 months

Commercial Warranty Package Inventory

Each differential unit includes a 1-Year commercial limited warranty against metallurgical defects. Crated package contents contain the bare differential carrier module, front companion yoke, rear output flange, vent hose fitting, and factory technical setup manual.