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.

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 (FOD) — 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.

Install Notes — This Wheel Must Be Balanced

• High-speed balancing is required. A compressor wheel is a rotating mass. Installed unbalanced, it will destroy the shaft, thrust bearing, and seals on the first heat cycle. Every SPOOLOGIC wheel must be installed on a rebuilt CHRA and high-speed balanced (VSR / core balancer) before the turbo is returned to service.
• Bore and hub inspection. The wheel bore must match the CHRA shaft with a light interference fit — not sloppy, not press-tight. A loose bore lets the wheel walk on the shaft; a tight bore galls on install.
• 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.
• Do not reuse the OE shaft nut. Compressor shaft nuts are torque-to-yield and stretch on installation. Reusing a stretched nut lets the assembly loosen at speed.

Interchange / Cross-Reference Part Numbers

• 97188685
• 97192618
• 97192619
• 97254688

What's Included

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

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
• Requires high-speed balancing on the assembled CHRA before return to service
• Sold as a DIY product — installation and balancing are the buyer's responsibility

Fits 2001-2004 6.6L Duramax LB7

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

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

This SPOOLOGIC compressor wheel is a professional DIY assembly product intended for experienced turbo builders and rebuild shops. Successful installation requires proper tools, OEM service procedures, cleanliness standards, correct wheel-to-shaft fitment, torque-to-yield shaft nut, and high-speed VSR balancing of the completed rotating assembly before return to service. Because SPOOLOGIC has no control over installation quality, balancing accuracy, or the condition of the parts the wheel is installed into, all sales are final — no warranty, no returns, no exchanges. By purchasing this wheel you acknowledge that you are responsible for correct installation, balancing, and verification.