SPOOLOGIC Turbo Rebuild Kit Billet Wheel Turbine Shaft Gaskets

The SPOOLOGIC Turbo Rebuild Kit with Billet Compressor Wheel SL-900-021-K03 is a rebuild package for 2004.5-2005 Chevrolet Silverado and GMC Sierra 2500 3500 6.6L Duramax LLY and the GT3788VA turbocharger. It combines a basic rebuild kit with a billet compressor wheel and a replacement turbine shaft. The billet wheel provides added airflow for a performance rebuild.

⚠️ Unassembled rebuild parts. Assembly and balancing are required.

Features

• 11-blade billet aluminum compressor wheel
• Replacement turbine shaft
• Journal bearings and thrust components
• Installation gaskets included

What's Included

• 1 SPOOLOGIC Basic Turbo Rebuild Kit — SL-210-021
• 1 SPOOLOGIC 11 Blade Billet Compressor Wheel — SL-220-055
• 1 SPOOLOGIC 10 Blade Turbine Shaft — SL-240-021
• 1 SPOOLOGIC Turbo Gasket Kit — SL-310-211

Fitment

• 2004.5-2005 Chevrolet Silverado GMC Sierra 2500 3500 6.6L Duramax LLY

Compatibility and Installation

Reuse only serviceable components. Replace damaged or out-of-specification parts. Confirm the turbo configuration and compare all supplied parts with the originals.

• Inspect shaft journals, wheels, bearing bores, and seal grooves.
• Correct oil supply, drainage, contamination, and crankcase-pressure problems.
• Follow service procedures for clearances, torque, lubrication, and priming.
• Inspect the VGT mechanism and verify its operation.

Compressor Wheel

compressor wheel: SL-220-055

• Blade design: 11-blade
• Compressor inducer: 63.5 mm
• Compressor exducer: 88 mm
• Extended tip: 94 mm
• Material: 5-axis CNC-machined billet aluminum

Turbine Shaft

turbine shaft: SL-240-021

• Turbine inducer: 72.5 mm
• Turbine exducer: 66.4 mm
• Turbine blade count: 10
• Material: High-nickel Inconel

Internals

• Journal bearings
• Thrust components
• Step-gap seal rings

Balancing

Supplied compressor wheels and turbine shafts are individually balanced. Balance the completed rotating assembly before returning the turbocharger to service.

⚠️ Emissions Notice

Not CARB approved. Not legal for sale or use in the state of California.

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

Every SPOOLOGIC Turbo Rebuild Kit Billet Wheel Turbine Shaft Gaskets is intended for experienced turbo builders and qualified technicians. A successful rebuild requires inspection of the existing turbocharger, suitable tools, correct assembly, and balancing of the rotating assembly. 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.