SPOOLOGIC 11 Blade Cast Compressor Wheel

The SPOOLOGIC SL-220-051 is a cast-aluminum compressor wheel for the RHG6 turbocharger on 2001-2004 GM 6.6L Duramax LB7 applications. This is the OE-equivalent stock-replacement cast wheel — same 11-blade layout, same 60.6 mm inducer, and same 82 mm exducer as the factory part — dimensionally matched for a direct-drop cartridge rebuild without any housing or shaft modification.

Features

• Direct-fit cast-aluminum compressor wheel for the RHG6 turbocharger
• 11-blade layout, 60.6 mm inducer, 82 mm exducer
• OE-equivalent cast aluminum — direct stock replacement
• Correct blade geometry and diameters for factory boost response
• Assembly balancing recommended after installation
• Sold as a DIY product — installation and balancing are the buyer's responsibility

What's Included

• 1 SPOOLOGIC SL-220-051 cast-aluminum compressor wheel

Fitment

• 2001-2004 Chevrolet Silverado GMC Sierra 2500 3500 6.6L Duramax LB7

2004 trucks: LB7 application; verify the engine code.

Wheel Specifications

• Construction: cast aluminum
• Blade Count: 11
• Inducer Diameter: 60.6 mm
• Exducer Diameter: 82 mm
• Turbo Model: RHG6

Why You Replace the Compressor Wheel

The compressor wheel is the aluminum airfoil pack on the cold side of the turbo that draws intake air, spins it up to 100,000+ RPM, and pushes it into the intake manifold as pressurized charge air. It is one of the highest-stress rotating components on the engine. Here's why it gets replaced:

• Foreign object damage — a bolt, nut, filter fragment, or torn intake elbow sends debris through the wheel. Even a small dent in the leading edge unbalances the assembly and shortens shaft life.
• Erosion and rub — years of dirty intake air erode the leading edge of each blade. A worn wheel with rounded blades makes less boost per unit of turbine speed — the turbo works harder for the same result.
• Cracked hub or blade root — high-cycle fatigue eventually opens a crack at a blade root or the hub bore. A cracked cast wheel can throw a blade at speed, destroying the compressor housing.
• Rebuild policy — when the CHRA is opened for a shaft, bearing, or seal service, the wheel comes off. Reusing a worn or bent wheel wastes the whole rebuild.

Installation and Balancing Notes

• The compressor wheel is individually balanced. Balancing the assembled rotating assembly is recommended best practice.
• Inspect the shaft, compressor-wheel bore, and mating surfaces before assembly.
• Shaft nut torque. Torque the compressor-side shaft nut to the turbocharger manufacturer's spec, in a controlled increment, holding the turbine wheel from spinning. Over-torque stretches the shaft; under-torque lets the nut back off.
• Clearance check. After torque, spin the assembly by hand and confirm the wheel does not contact the compressor housing at any angle. Verify tip clearance is within OEM spec at the exducer face.
• Follow the applicable service requirements for shaft-nut replacement and tightening.

OEM and Manufacturer References

• 97188685
• 97192618
• 97192619
• 97254688

⚠️ 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.