68378949AA Chrysler / Mopar Genuine Gear and 50 similar items

Chrysler / Mopar Genuine Gear Lubricant 946 ml – 68378949AA Product Overview The Chrysler / Mopar Genuine Gear Lubricant (68378949AA) is an OEM synthetic differential and axle gear oil designed for use in modern front and rear axle assemblies, limited-slip differentials, and heavy-duty driveline systems. This lubricant is engineered to meet strict Mopar specifications for GL-5 extreme pressure performance, ensuring smooth gear operation, reduced wear, and long-term protection under high torque and temperature conditions. It is commonly supplied in a 946 ml (1 quart) factory-sealed bottle for precise service refilling of Chrysler, Jeep, Dodge, and Ram axle systems. Product Specifications Specification Details Part Number 68378949AA Product Name Gear Lubricant / Axle Oil Brand Mopar (Chrysler Genuine) Manufacturer Stellantis (FCA US LLC) Category Drivetrain / Differential Fluids Fluid Type Synthetic Gear Oil SAE Grade 75W-85 API Standard GL-5 Volume 946 ml (1 Quart) Condition New Genuine Fluid Technical Details Extreme Pressure (EP) Protection Formulated with high-performance additives to protect gears and bearings under heavy load, shock stress, and high torque conditions. Synthetic Base Oil Technology Provides superior thermal stability and oxidation resistance for long service life and consistent viscosity performance. Anti-Wear Anti-Corrosion Additives Protects internal differential components from rust, pitting, and premature wear. Optimized for Modern Axles Designed for Chrysler rear and front axle systems including limited-slip and electronic locking differentials. Fuel Efficiency Contribution Low-friction formulation helps improve drivetrain efficiency and reduce internal resistance. Function Benefits Primary Function This gear lubricant reduces friction between differential gears and bearings, ensuring smooth torque transfer from the drivetrain to the wheels. Key Benefits Protects differential gears under extreme pressure Ensures smooth and quiet axle operation Extends lifespan of bearings and gear sets Maintains stable lubrication at high temperatures OEM-approved formulation for Chrysler systems Supports limited-slip and electronic differentials Signs of Replacement Replace gear oil if you notice: Whining or humming noise from rear axle Rough or stiff differential operation Contaminated or burnt-smelling oil Metal particles in drained fluid Overheating from drivetrain area Manufacturer service interval reached Compatibility Vehicle Applications The Mopar 68378949AA Gear Lubricant is commonly used in: Make Model Application Notes Jeep Wrangler Front/rear differential lubricant 2018+ models Jeep Gladiator Axle gear oil 2019+ models Dodge Ram 1500 Differential lubrication Select trims Chrysler Various AWD Front/rear axle systems Factory fill fluid ? This fluid is specifically recommended for Mopar axle systems requiring SAE 75W-85 GL-5 gear oil. Always confirm exact specification using VIN and axle tag code before service. Installation / Service Notes Ensure vehicle is on level ground Drain old differential fluid completely Inspect drain plug magnet for metal debris Refill with correct capacity as per axle type Use friction modifier if required (limited-slip) Torque fill and drain plugs to spec Check for leaks after road test Quality Reliability The Mopar Genuine 68378949AA Gear Lubricant is factory-formulated to ensure maximum axle protection, smooth operation, and long-term durability under demanding driving conditions. Why Choose Mopar Genuine 68378949AA 100% OEM Chrysler/Mopar fluid Correct GL-5 75W-85 specification Protects against extreme pressure wear Ensures smooth differential performance Compatible with modern axle technologies Factory-approved service fluid