BW4485 Transfer Case for GM 2007-2014 Yukon/Suburban/Escalade

Description

Routing single speed full-time all-wheel torque, BorgWarner BW4485 AWD Marine Transmission units provide dependable torque transfer with a 1.00:1 ratio for 2007 to 2014 GM Yukon, Suburban, and Escalade platforms. Built for marine logistics fleets, this carrier supports 400 continuous horsepower with a 5,400 input RPM ceiling, delivering smooth front wheel power transfer during boat ramp staging operations across harbor networks.

High-tensile die-cast magnesium forms the single-speed transfer case housing, dampening driveline resonance while minimizing overall vehicle mass. An internal open center differential pairs with a high-strength multi-link drive chain to deliver seamless full-time all-wheel drive without shift motor complexity. An internal oil pump circulates fluid from the 1.5-quart automatic transmission fluid reservoir across needle bearings, preserving shaft seals and maintaining thermal equilibrium under heavy continuous towing cycles.

Key Features of BorgWarner BW4485 AWD

Fleet maintenance directors buy BorgWarner BW4485 AWD marine transmission units to maintain dependable four-wheel drive pulling power in modern shipyard transport trucks. This front differential carrier balances torque output across independent front suspension half-shafts during heavy marine vessel maneuvers.

• Single-speed 1.00:1 direct drive eliminates low-range gear rattle and shift motor failures
• Full-time all-wheel drive operation delivers uninterrupted tractive effort across all four tires
• 32-spline input gear interfaces straight with GM 6L80 six-speed automatic transmissions
• BorgWarner BW4485 AWD components maintain center differential gear mesh under shock loads
• High-capacity Morse drive chain transfers front driving torque without elongation
• Internal oil pump maintains continuous lubrication across mainshaft roller bearings
• Rear slip yoke output accommodates rear driveshaft suspension travel without binding
• Front companion flange connects straight to constant-velocity front driveshafts

Torsen Differential Torque Boundaries

Operating under medium duty commercial ratings, this front carrier manages 2,200 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. Transfer case sump operating temperatures hold steady between 150°F and 175°F under continuous vehicle transit. Heat dissipation across the magnesium casing reaches 2.4 kW during protracted all-wheel drive ramp work. Planetary helical gear profiles ensure uniform load distribution across tooth flanks, preventing gear pitting under load.

Companion Flange Mating Standards

The front output companion flange features a round multi-bolt pattern engineered for front driveshaft connections. High-capacity opposed roller bearings support up to 3,600 pounds of continuous axial pinion thrust. Alignment checks with a dial indicator must confirm total radial and face runout under 0.0025 inches relative to the front driveshaft axis.

AWD Housing Maintenance Regimen

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 Dexron VI transmission fluid and clean internal oil pump pickup screen every 12 months

Hardware Warranty Crate Inventory

Each transfer case unit includes a 1-Year commercial limited warranty against material and manufacturing defects. Crated package contents contain the fully remanufactured transfer case unit, front companion yoke, rear extension housing, vent hose fitting, and comprehensive installation instructions manual.