Spicer Trac-Lok Differential Clutch Pack Kit for AMC Model 20 Limited-Slip Carriers

Restore original factory traction capabilities, eliminate rear-end chatter, and completely refresh your classic limited-slip differential with this genuine Spicer Trac-Lok Differential Clutch Pack Kit. Over decades of road use and trail adventures, the friction discs within a positraction carrier naturally wear down, reducing internal spring preload. When this occurs, your vehicle loses its limited-slip capability and reverts to acting like a standard open differential—leaving you stuck with single-wheel spin in mud, sand, snow, or loose dirt.

Worn-out differential clutches typically announce themselves through a noticeable binding or "chattering" sensation when turning at low speeds, or a complete failure to distribute power to both rear wheels under load. Replacing your worn internals with this original equipment manufacturer (OEM) kit restores the factory-correct stacking height, precise clearances, and required friction thresholds for smooth, dependable lockup.

This complete service package contains premium-grade friction discs and matching steel plates engineered to withstand severe rotational loads. Manufactured to exact factory tolerances, it is the correct, definitive solution to overhaul an original AMC Model 20 Trac-Lok carrier assembly, a legendary axle widely utilized across classic Jeep trucks and SUVs.

Kit Highlights:

• Complete Internal Overhaul: Includes premium friction discs, structural plates, and necessary retainers to fully restore both sides of the limited-slip differential carrier.

• Genuine Spicer OEM Quality: Manufactured by the original equipment supplier to guarantee exact material hardness, steel grade, and factory dimensional tolerances.

• Restores Positraction Power: Re-establishes correct internal carrier preload, ensuring the side gears smoothly distribute torque to both rear wheels under low-traction situations.

• Eliminates Low-Speed Binding: High-grade steel construction delivers quiet, smooth slip characteristics during tight cornering when combined with quality gear oil and friction modifier additive.

Vehicle & Carrier Fitment:

• Differential Profiles: Fits factory AMC Model 20 (AMC 20) rear limited-slip Trac-Lok carriers only (Does not fit aftermarket lockers, standard open differentials, or Dana-designed axles).

• Jeep Application Examples: 1976–1986 Jeep CJ5, CJ7, and CJ8 Scrambler models configured with the factory optional limited-slip AMC 20 rear end.

• AMC Vehicle Examples: Classic AMC passenger cars and wagons (such as the AMC Eagle 4x4) equipped with the Model 20 rear differential.