New Genuine OEM Mopar 4318060AB Limited Slip Differential Additive 4 oz (120 mL) Gear Oil Fluid

Product Description

Keep your limited slip differential performing the way it was engineered to with New Genuine OEM Mopar 4318060AB Limited Slip Differential Additive — a 4 oz (120 mL) gear oil fluid supplement designed specifically for differentials equipped with limited slip (LSD) clutch packs.

A limited slip differential relies on a set of clutch plates to manage power distribution between the drive wheels, allowing torque to transfer to the wheel with the most traction instead of spinning the wheel with the least resistance. Over time, or after a fluid change with standard gear oil, these clutch plates can begin to “chatter” — producing a jerking, shuddering, or grinding noise during low-speed turns, particularly in parking lots or tight cornering. This happens because standard gear oil lacks the specific friction-modifying properties that LSD clutch packs need to engage and release smoothly. This genuine Mopar additive is formulated to correct that: it modifies the friction characteristics of your gear oil, allowing the clutch plates to engage progressively rather than grabbing and releasing abruptly, eliminating chatter and restoring smooth, quiet operation.

This is not a generic aftermarket friction modifier — it’s a Genuine OEM Mopar part, engineered and tested to the same specifications used by the factory when your vehicle was built. Using the genuine additive helps ensure compatibility with your differential’s internal components and the specific gear oil already in your axle, avoiding the guesswork and inconsistent results that can come with off-brand alternatives.

Key Features:

• 100% Genuine OEM Mopar Part — Part Number 4318060AB
• 4 oz (120 mL) bottle — sized for standard differential fluid top-off or refill procedures
• Friction-modifying additive formulated specifically for limited slip differentials
• Eliminates clutch chatter, shudder, and noise during turns
• Restores smooth, consistent power transfer between drive wheels
• Compatible with most Mopar/Stellantis vehicles equipped with a factory limited-slip axle
• Simple to use — added directly to the differential gear oil during a fluid service

When to Use This Additive:

• After performing a differential fluid change (many gear oils require this additive to be added separately, as it is not always pre-mixed)
• If you’re noticing chatter, shudder, or a “clunking” noise when making tight, low-speed turns
• As part of routine differential maintenance to keep the limited slip clutch pack operating smoothly

Recommended For: Trucks, SUVs, and performance vehicles equipped with a factory limited slip rear (or front) differential, especially those that regularly tow, carry heavy loads, or are driven off-road, where the LSD is worked harder and more prone to clutch wear.

Please note: Not all differentials are limited slip — check your vehicle’s axle tag, owner’s manual, or consult a technician to confirm your differential type before purchasing. Using this additive in a standard open differential is unnecessary and will not provide any benefit.