SPOOLOGIC Turbo Step Gap Oil Seals

The SPOOLOGIC Turbo Step Gap Oil Seals SL-210-122 service the Holset HE351CW turbocharger in 2003-2007 Dodge Ram 2500 3500 trucks with the 5.9L Cummins. The compressor-side and turbine-side seals replace worn oil seal rings during turbocharger service.

⚠️ Oil seals only. Other rebuild parts are not included.

Features

• Compressor-side step-gap oil seal
• Turbine-side step-gap oil seal
• Piston-ring seal design

What's Included

• Compressor-side step-gap oil seal
• Turbine-side step-gap oil seal

Fitment

• 2003-2007 Dodge Ram 2500 3500 5.9L Cummins

Compatibility and Installation

Bearings, thrust parts, shaft, wheels, housings, and gaskets are not included.

• Confirm the turbo model and compare seals with the originals.
• Inspect bearings, shaft, seal grooves, and mating surfaces.
• Follow the applicable service procedure and verify oiling before startup.

New seals cannot correct bearing wear, component damage, or worn seal grooves. High-speed balancing is required when specified by the repair procedure or component replacement.

⚠️ DIY Product — All Sales Final, No Warranty, No Returns

All SPOOLOGIC Turbo Step Gap Oil Seals are intended for experienced turbo builders and qualified technicians. Inspect the mating grooves, sealing surfaces, and related components for wear or damage; correct seal selection and installation are essential. All sales are final—no warranty, returns, or exchanges. Confirm compatibility before ordering. See the SPOOLOGIC Warranty Policy for details on parts sold without a warranty.