BW4447 Transfer Case for 2013-2018 RAM 3500 Cab Chassis w/ AISIN Tran R. Bolt Yoke Man Shift

Description

Locking AISIN manual shift four-wheel drive, BorgWarner BW4447 Heavy Marine Transmission units provide dependable torque transfer with a 2.64:1 ratio for 2013 to 2018 RAM 3500 cab chassis trucks with AISIN transmissions. Built for marine logistics fleets, this carrier supports 450 continuous horsepower with a 4,500 input RPM ceiling, delivering smooth front wheel power transfer during boat ramp staging operations across harbor networks.

Constructed with an extra-thick die-cast magnesium casing split horizontally, this unit resists torsional twisting under severe commercial towing loads. A specialized heavy-duty input shaft couples straight to AISIN AS69RC commercial transmissions, while a fixed rear bolt flange secures commercial driveshafts. Carburized 8620 alloy steel helical planetary gears provide deep reduction. The 1.9-quart lubricant capacity flows through an integrated gerotor oil pump, keeping roller bearings lubricated under continuous duty cycles.

Key Features of BorgWarner BW4447 Heavy

Commercial marine operators buy BorgWarner BW4447 Heavy marine transmission units to eliminate front driveline failures during peak boat retrieval operations on algae-covered slipways. This carrier package maintains constant gear mesh alignment through severe axle articulation cycles.

• 2.64:1 low range reduction delivers maximum mechanical advantage for steep ramp pulls
• Specialized heavy-duty input spline profile couples straight to AISIN AS69RC transmissions
• Fixed rear output bolt flange supports heavy commercial driveshafts without leakage
• BorgWarner BW4447 Heavy reduction components maintain backlash stability under shock torque
• Manual floor shift rail delivers positive four-wheel drive engagement in all harbor conditions
• Internal gerotor oil pump maintains continuous lubrication across mainshaft roller bearings
• High-capacity Morse drive chain transfers front driving torque without elongation
• Machined seal bores provide leak-free mating surfaces for front and rear companion yokes

Heavy Duty Manual Reduction

Built for severe commercial service ratings, this front differential manages 2,650 lb-ft of continuous input torque at 1,900 driveline RPM. The 2.64:1 reduction ratio delivers massive low-end torque multiplication while maintaining differential sump operating temperatures between 155°F and 185°F. Heat transfer across the heavy magnesium casing dissipates up to 2.8 kW during continuous four-wheel drive ramp work. Advanced tooth contact patterns distribute gear stress uniform across tooth faces, preventing tooth shearing under full engine acceleration.

Fixed Companion Flange Tolerances

The companion pinion flange accommodates heavy-duty 1410 series universal joints with a four-bolt pattern. Dual opposing tapered roller bearings resist 4,500 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.

Manual Floor Shift Protocols

Check automatic transmission fluid condition through the casing threaded fill port before operating support vehicles on steep boat ramps. As an explicit negative filter, this transfer case unit is not engineered for direct propeller shaft connection or inboard commercial vessel propulsion systems.

• Inspect transfer case housing fluid levels and breather valve freedom each shift before ramp transit
• Examine shift linkage pivot bushings and front output yoke seals every 250 hours of fleet use
• Replace synthetic ATF+4 fluid and clean magnetic drain plug every 12 months of service

Warranty Hardware Shipment Manifest

This front carrier includes a 1-Year commercial limited warranty against material and craftsmanship defects. Crated shipment contents feature the assembled differential carrier case, manual shift linkage hardware, fixed rear bolt yoke, front output flange, and comprehensive installation documentation.