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Posi Traction Differential for GM Truck 12-Bolt 8.875 in. Rear, 30-Spline [2.76-3.42 Ratio]
InfoVehicle Info Needed
JEGSPART NUMBER: 555-62832

Posi Traction Differential for GM Truck 12-Bolt 8.875 in. Rear, 30-Spline [2.76-3.42 Ratio]

$40199$442.99You Save$41.00
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GM Truck 12-Bolt 8.875"
Posi Traction Differential
  • Fits 1961-1987 Chevrolet/GMC 1/2 & 3/4 Ton Trucks
  • GM Truck 12-Bolt Rear
  • 8.875 in. Diameter Ring Gear
  • 30-Spline
  • 2.76-3.42 Ratios
  • Clutch Style Limited-Slip Design
  • Fully Rebuildable

    JEGS 555-62832 Posi Traction Differential

    JEGS 555-62832 Posi Traction differential for use in 1961-1987 Chevrolet/GMC 1/2 & 3/4 Ton Trucks with GM 12-bolt rear differential provides smooth limited-slip operation and aggressive traction on a wide variety of terrains. This Posi unit is manufactured using a high-strength nodular case, forged 4320 chromoly spider gears, and Raybestos composite clutches for strength, durability, and long life. Whether you're pulling a trailer, hauling a load, or enjoying a ride on the street you will experience incomparable positraction performance.

    Technical Note: JEGS recommends the use of high-grade Non-Synthetic GL-5 Gear Oil and LSD (Limited-Slip Differential) additive 555-60120 for smooth operation and long life. The use of Synthetic oil is not recommended and may result in noisy or aggressive operation.

    FAQ

    Is a 12 bolt rear end what I need for my application?

    • The JEGS 555-62832, designed for GM trucks, provides a 12-bolt rear end solution suitable for various applications, ensuring enhanced performance.

    How do I know if my rear end is posi?

    • The JEGS 555-62832 GM Truck Posi Traction Differential features posi-trac, delivering improved traction and stability; check for enhanced wheel grip during acceleration.

    What is the difference between a GM 10 bolt and a 12 bolt?

    • The JEGS 555-62832's 12-bolt design offers increased strength and durability compared to a GM 10 bolt, making it an ideal choice for demanding applications.
    • Improve Traction for Your Front or Rear Differential

      JEGS Posi Traction Limited-Slip Differentials combine an Exclusive JEGS Yellow 4-Spring Pack and Raybestos composite clutches for better traction and more controlled power transfer. The precision engineered internal gears are cut from forged SAE 4320 steel to provide stronger teeth, longevity and a smoother ride. These fully rebuildable units are assembled in the USA with state-of-the-art technology and real-world testing for superior control on the road.

      Show More

      Boost your vehicle’s traction, handling, and off-the-line performance with JEGS Posi Traction Differentials—engineered for drivers who demand more control in high-torque, high-performance conditions. Whether you're tackling the drag strip, curving back roads, or rugged off-road terrain, this upgrade delivers the confidence and grip you need.

      Designed to distribute torque evenly between both rear wheels, this posi traction differential kit helps reduce wheel spin and maximize power delivery, especially when traction is limited. Say goodbye to one-wheel burnouts and hello to smoother, more predictable acceleration—even in wet or uneven conditions.

      Built with premium materials and precision engineering, JEGS Posi Traction Differentials are made for durability under pressure. They’re an excellent choice for performance builds, street machines, muscle cars, or daily drivers in need of a traction upgrade. Installation is straightforward with no major modifications required for most common axle housings.

      If you're looking for a reliable positraction solution to enhance your driving experience, JEGS has you covered. This differential improves cornering stability, enhances straight-line traction, and adds a performance edge that’s noticeable the moment you hit the throttle.

      Whether you're upgrading your muscle car or outfitting your off-road rig, a posi track rear end setup from JEGS gives you the grip and confidence to take on any road—or lack thereof.

      Dominate the pavement or the trail with JEGS Posi Traction Differentials—performance you can feel, quality you can trust. Order today and experience the power of true traction.

    Part TypeDifferential Carrier
    Product LineJEGS Posi Traction Differentials
    BrandJEGS
    Package Height10.3
    Package Width10.5
    Package Length10.9
    Weight22.95 PG
    Part CategoryPerformance Parts
    Aftermarket Carrier StyleLimited slip
    Differential Case Design TypeGM 8.875 (Truck)
    Quantity1
    Cover Bolts12
    Differential Carrier Break2.76 to 3.42
    Carrier MaterialNodular iron
    Bearings IncludedNo
    Part FitmentSemi Universal
    Axle Shaft Spline Quantity30
    Vendor Part NumberPVTJEGPOSGM12T330
    Package Qty1
    Package TypeEA
    No Questions
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    Some parts are not legal for use in California or other states with similar laws / regulations
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