SPOOLOGIC Stock Turbocharger

The SPOOLOGIC SL-100-070 is a brand-new, direct-fit drop-in stock replacement turbocharger for 1989–1991 Dodge D250, D350, W250, and W350 pickup trucks equipped with the 5.9L Cummins 12-valve in the non-intercooled configuration. It combines stock-replacement compressor and turbine sizing with upgraded internal components and installation gaskets. Designed for daily driving, towing, and work-truck service, it provides a replacement for a worn, leaking, or failed original turbocharger while maintaining factory-style response and drivability.

Features

• Brand new, no core charge
• stock replacement turbocharger
• Direct drop-in fit using factory connections.
• 8+8 splitter-blade compressor wheel
• 12-blade turbine assembly
• Journal bearings, 360-degree thrust bearing, and step-gap seals
• High-speed VSR balancing

What's Included

• 1 SPOOLOGIC Turbocharger — SL-100-070
• 1 SPOOLOGIC Turbo Installation Gasket Kit — SL-310-070

Fitment

• 1989-1991 Dodge 250 350 5.9L Cummins 12V
• Early Built 1991 Non-Intercooled

⚠️ Confirm Application Before Ordering: This turbocharger fits the non-intercooled 1989–1991 configuration. Confirm the original turbocharger and intake arrangement on 1991 trucks; the later intercooled configuration uses SL-100-071.

Compressor Wheel

• Inducer diameter: 52 mm
• Exducer diameter: 83 mm
• Blade design: 8+8 splitter blade
• Compressor wheel material: Cast aluminum

Turbine Shaft

• Turbine inducer: 70 mm
• Turbine exducer: 60 mm
• Blade count: 12
• Turbine wheel material: High-nickel Inconel

Bearings, Seals, and Balancing

The SL-100-070 is assembled with upgraded internal components designed to support shaft stability, oil control, and consistent rotating-assembly operation.

• Extreme-duty journal bearings — Support the turbocharger shaft
• 360-degree thrust bearing — Axial-load support
• Step-gap seal rings — Improved sealing and oil control
• High-speed VSR balancing — Smooth, consistent operation

OEM Cross-References

• Holset / Cummins: 3526739
• Holset / Cummins: 3526740

Use these numbers to identify the original application. Confirm the engine, model year, transmission where applicable, and turbocharger configuration before ordering.

1-Year Limited Warranty

Every SPOOLOGIC turbocharger carries a one-year limited warranty against defects in materials and workmanship from the original purchase date. Coverage applies to the original purchaser with dated proof of purchase. Contact SPOOLOGIC for return authorization before shipping the turbocharger for inspection. If inspection confirms a covered defect, SPOOLOGIC will repair or replace the turbocharger at its discretion. Damage from foreign-object debris, oil starvation, contaminated or restricted oil flow, extended oil-change intervals, over-boosting, over-fueling, improper installation or tuning, operation beyond the intended range, or use outside the listed application is excluded, along with cosmetic wear, coating discoloration, and normal heat-cycling marks. Customers are responsible for shipping both to SPOOLOGIC and back, whether the claim is approved or denied. Labor, diagnostics, removal, reinstallation, towing, downtime, and other related expenses are not covered. See the SPOOLOGIC Warranty Policy for complete terms and claim procedures.