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  • DODGE CUMMINS
  • FORD POWERSTROKE
  • GM DURAMAX
  • COMMERCIAL / INDUSTRIAL
  • CUMMINS CONVERSION PARTS
  • CPP GEAR
  • USED PARTS
  • SHOP BY BRAND

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    • DIFFERENTIAL AND DRIVETRAIN

    DIFFERENTIAL & DRIVETRAIN — 1994–1998 DODGE RAM 5.9L CUMMINS (12-VALVE, P7100)

    Build a stronger Second-Gen driveline with CPP Diesel’s curated selection of ring & pinion gears, lockers/LSDs, master overhaul kits, differential covers, axle shafts & hubs, U-joints, and pinion yokes—chosen for 1994–1998 Ram 2500/3500 fitment and heavy-duty use.

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    Featured 94–98 Picks

    Why Buy from CPP Diesel

    • Second-Gen Focus: Parts selected around typical 94–98 axle combos (Dana 60 front; Dana 70 or Dana 80 rear—verify axle tag/RPO).
    • Top Brands: Yukon, USA Standard, Dana Spicer, ATS and more.
    • Expert Support: Gear ratio selection for tire size/towing, locker types, and correct install kits.
    • Fast Shipping: Popular driveline components ship quickly from U.S. warehouses.

    Browse the full 1994–1998 Cummins catalog, or pair driveline upgrades with steering/suspension and transmission/transfer case for a complete setup.

    Helpful Notes

    • Axle ID: Confirm front Dana 60 & rear Dana 70/80 via axle tag and spline count before ordering gears/lockers.
    • Gear changes: A master overhaul kit is recommended whenever changing ratio or replacing worn bearings/seals.
    • Locker choice: Air lockers offer on-demand lock; mechanical lockers (e.g., Grizzly) are simple and strong; clutch-type LSDs restore factory traction.
    • U-joint sizing: Many Ram 2500/3500 builds use 1410 or 1480 series—match yolk/u-bolt style and cap diameters.
    • Fluid & break-in: Use quality gear oil and follow heat-cycle break-in after new gears to reduce noise and extend life.

    Frequently Asked Questions

    How do I know if my truck has a Dana 70 or Dana 80 rear?

    Check the axle tag on the diff cover or the BOM/RPO info. The Dana 80 is common on many 3500s; 2500s often have Dana 70. Count splines and verify cover shape before ordering gears or lockers.

    Do I need a master install kit when changing gear ratio?

    Yes—new bearings, shims, seals, ring gear bolts and setup consumables ensure proper pinion depth/backlash and long gear life. See our Dana 60 and Dana 70 master kits.

    Which locker is best for a tow rig that also sees snow?

    Air lockers offer street manners (open when off) and full lock when needed. A mechanical locker like the Grizzly is extremely durable but may feel more aggressive in tight turns.

    Will a finned differential cover help temps?

    Finned, higher-capacity covers can improve heat dissipation and fluid volume—popular on Dana 80 rears used for towing. See our ATS Dana 80 cover and Yukon aluminum covers.

    How do I pick the right U-joint?

    Match the series (1410/1480), cap diameter and snap-ring style to your yokes. We stock Spicer 1480 and Yukon 1410 options.

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