230mm Rear Diff Assembly for 2012-2013 Grand Cherokee, 3.45 Gear, E-LOCKER

Description

Configured for torque vectoring trail luxury, Mopar 230mm Electronic Rear Differential units convert driveshaft torque across a 3.45:1 reduction ratio. The independent rear carrier handles 360 continuous horsepower at 5800 engine RPM with hypoid gear sets and electromagnetic clutch actuators. Stiff iron casing walls isolate internal bearings from subframe flex while delivering maximum off-road traction on Grand Cherokee models.

Cast ductile iron forms the main rear differential housing to withstand severe shock loads during heavy trailer towing and off-road excursions. Case-hardened 8620 alloy steel hypoid gears produce silent power conversion with minimal frictional resistance. An integrated electronic clutch actuator varies locking force across the rear axle to enhance vehicle stability under power. Equipment details include subframe mounting tabs, electronic wiring plugs, pre-pressed seals, 1.4 quarts fluid capacity, and 84 lbs dry weight.

Key Features of Mopar 230mm

Four-wheel drive technicians choose to buy Mopar 230mm electronic rear differential packages when servicing luxury sport utility vehicles. This electronic locker rear differential carrier bolts straight into independent rear subframes on 2012 to 2013 Jeep Grand Cherokee models.

• A 3.45 to 1 gear ratio balances heavy towing torque capacity with smooth highway cruising engine revolutions.
• An internal electronic clutch pack locks rear axles on command to conquer steep rocks and loose gravel trails.
• Ductile cast iron housing construction resists casing flex during heavy trailer pulling maneuvers.
• Precision ground hypoid gears transfer up to 390 lb-ft continuous input torque without surface wear.
• Precision ground shim packs lock pinion depth and bearing preload within exact factory tolerances.
• Pre-fitted rubber axle seals guard against fluid leaks at half-shaft connection points.
• Integrated electronic wiring harnesses plug straight into vehicle chassis stability control computers.

Rear Electronic Locker Dynamics

Hypoid ring and pinion gears mesh under heavy contact loads, transferring up to 390 lb-ft continuous input torque without tooth surface distress. Dual tapered roller pinion bearings hold pinion gear shafts rigid against axial deflection during hard acceleration. Sump lubricant temperatures remain between 140°F and 195°F through convection across exterior cast iron housing walls. The 3.45:1 mechanical reduction ratio combined with electronic torque vectoring provides balanced traction distribution across varied terrain without wheel scrub.

Rear Axle Pilot Alignment

The differential case incorporates precision splined internal side gears matching heavy-duty 32-spline CV axle half-shafts. Pinion companion flanges feature circular three-finger patterns designed for driveshaft flex couplers. Technicians verify ring gear backlash measures between 0.005 and 0.008 inches across the entire ring gear circumference.

Electronic Actuator Service Schedule

Electronic clutch discs compress under pulse-width modulated current to meter locking torque between left and right rear wheels. This electronic locking carrier is not engineered for base open differential vehicles lacking factory electronic locker wiring harnesses. Preventive maintenance maintains bearing longevity.

• Inspect differential housing seams, electrical plugs, and axle seals for fluid weeping each shift during inspections.
• Check gear lubricant condition and verify locker engagement operation every 250 operating hours.
• Drain used synthetic 75W-140 gear lubricant down to empty and refill fresh oil every 12 months.

Manufacturer Crate Warranty Terms

The builder supports this carrier with a 1-Year limited warranty against structural casting defects or gear machining flaws. Factory shipping crates include the complete electronic rear locking differential carrier, integrated electronic actuator, pre-torqued pinion flange, pressed axle oil seals, and official service workshop driveline installation guidelines.