SPOOLOGIC Turbo Step Gap Oil Seals

The SL-210-122 seal kit is for the Holset HE351CW serving the 5.9L 24-valve Cummins application listed below. It supplies oil seal rings for service of the HE351CW CHRA. Match the kit to the turbo identification and configuration before beginning work.

Features

• Compressor-side and turbine-side step-gap piston-ring style oil seals
• Seal-only service set for an existing CHRA with serviceable bearings, shaft and housings
• Turbo model and configuration can vary. Confirm the identification on your existing turbo before ordering.

What's Included

• Compressor-side step-gap piston-ring style oil seal
• Turbine-side step-gap piston-ring style oil seal

Fitment

• 2003-2007 Dodge Ram 2500 3500 5.9L Cummins

⚠️ Seal-Only Service

This kit contains oil seal rings only. Bearings, thrust parts, shaft, compressor wheel, turbine wheel, housings, gaskets and other assembly parts are not included. It will not correct bearing wear, shaft damage, housing damage or worn seal grooves.

Installation Notes

• Confirm turbo model and configuration before disassembly.
• Inspect the shaft, bearing clearances, seal grooves and mating surfaces; replace damaged or worn components as needed.
• Follow the correct turbocharger service procedure and verify oiling before startup.
• Have the completed rotating assembly high-speed balanced when the repair procedure or component replacement requires it.

Turbo Applications

• Holset HE351CW

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

This SPOOLOGIC turbocharger repair product is intended for experienced turbo builders and qualified technicians. Proper installation requires suitable tools, careful inspection, and correct assembly. All sales are final—no warranty, returns, or exchanges. Confirm compatibility before ordering. See the SPOOLOGIC Warranty Policy for details on products sold without a warranty.