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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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    • TURBOCHARGER

    TURBOCHARGERS & ACCESSORIES — 1989–1993 DODGE RAM 5.9L CUMMINS (12-VALVE)

    From stock-style replacements to proven S300 SX-E upgrades and full compound kits, CPP Diesel has the turbo parts to match your First-Gen’s power goals. Shop complete turbos, install hardware, oil lines, downpipes, exhaust manifolds, and V-band components that fit 1989–1993 D250/D350 & W250/W350.

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    Featured for 1st Gen

    Why Buy from CPP Diesel

    • First-Gen Focus: Parts curated for VE-pump 6BT spool, fitment and towing needs.
    • Trusted Brands: BorgWarner, DPS, BD Diesel, Diamond Eye, Cummins, CPP hardware.
    • Expert Support: Sizing help (62/68/.70 T3 street/tow to big S300/S400 builds), outlet & downpipe pairing, and oil line routing.
    • Fast Shipping: Popular turbos and install parts ship quickly from U.S. warehouses.

    Explore the full 1989–1993 Cummins catalog for complementary upgrades.

    Helpful Notes

    • Outlet type: Many performance S300/S400 units need an HX40-style outlet and matching downpipe.
    • Manifold flange: Most First-Gens use T3; verify A/R and housing for your power/spool goals.
    • Oil lines: Always replace aged drains and verify feed restriction for new center sections.
    • Intercooled years: ’91.5–’93 are factory-intercooled—match charge pipes accordingly.
    • Compliance: Check local regulations when modifying emissions-related components.

    Frequently Asked Questions

    What’s a solid street/tow turbo for a mostly stock 12-valve?

    A modern S300 SX-E 62/68 with a tight T3 housing is a popular choice for quick spool and ~300–400 hp with proper fueling and exhaust flow.

    Do I need an HX40 downpipe with my upgrade?

    Many S300/S400 and larger Holset upgrades use an HX40-style 4.0″ outlet. Pair with the correct downpipe or an adapter outlet flange.

    Will my ’89–’90 non-intercooled truck need extra parts?

    Non-IC trucks may require additional charge-air plumbing. Intercooled pipes & boots (’91.5–’93) can be used when converting to an intercooler.

    What install hardware should I refresh?

    Use new T3 inlet gaskets, outlet seals, and a quality oil drain. Check studs/fasteners and V-band hardware.

    How big can I go on a single?

    Singles beyond mid-60 mm compressor wheels can get laggy for towing. For higher power with drivability, step into a compound kit.

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