The SPOOLOGIC SL-100-050 is a brand new direct-fit Stock Turbocharger (Federal Emissions) built for 2001-2004 6.6L Duramax LB7 trucks. It’s built on the IHI RHG6 fixed-geometry platform — the same factory turbo on your truck — with factory-style wheel sizing, no billet upgrades, and no tuning requirements. This is a pure drop-in replacement, not a performance turbo.

This is the right turbo for the owner who just wants the truck running the way GM built it — no custom tune, no supporting mods, no compromises. Bolt this turbo on and go: same up-pipes, same down-pipe, same OEM plumbing, same factory calibration. Every SPOOLOGIC turbo is built brand new — never remanufactured — and backed by a 1-Year Limited Warranty.

Upgraded Internals — Standard

Every SPOOLOGIC turbo is assembled with upgraded internal components that go beyond a basic factory-style replacement:

• Wastegate actuator — new and tested on every unit, matched to the factory RHG6 wastegate calibration for accurate boost control
• Extreme duty journal bearings — premium bronze-alloy bearings machined to tighter tolerances with improved oil groove geometry, maintaining the precise oil film that keeps the turbo shaft centered at 100,000+ RPM — even under higher heat and shaft loads
• 360-degree thrust bearing — added strength and load capacity over a worn factory bearing, better at handling boost-driven thrust loads
• Step gap seal rings — improved sealing performance, less blow-by past the CHRA
• High-speed VSR balancing — smooth, dependable operation and longer bearing life

60.6/82mm Compressor Wheel

The SL-100-050 uses a factory-style 60.6/82mm compressor wheel — matched to the exact sizing IHI specced for the LB7 platform. No billet upgrade, no extended-tip exducer — just a fresh, factory-accurate wheel that spools, drives, and performs exactly like the original.

• Inducer diameter: 60.6mm
• Exducer diameter: 82mm
• Blade count: 11, factory-style

68/62mm Turbine Wheel

Factory-style 68/62mm turbine wheel matched to the compressor for the same spool characteristics and boost response your LB7 had from the factory.

• Turbine inducer: 68mm
• Turbine exducer: 62mm
• Blade count: 11, factory-style

Ceramic Coated Center Section, Turbine Housing & Pedestal

SPOOLOGIC ceramic coats the turbine housing, the center section (CHRA), and the pedestal on the SL-100-050. This isn’t high-temp paint — it’s a true thermal barrier rated for the 1,600°F+ surface temperatures a diesel turbine sees under sustained load. The real, measurable benefits:

• Drops turbine housing surface temps 33-50% — far less radiant heat dumped into the engine bay, which protects wiring harnesses, oil lines, hoses, and surrounding components from long-term heat damage
• Reduces post-shutdown heat soak into the CHRA and bearing oil — the #1 cause of premature turbo failure is oil baking on the bearing journals after shutdown, and the coating interrupts the radiant feedback loop that causes it
• Retains exhaust energy in the gas stream — keeping heat in the exhaust where it belongs (driving the turbine wheel) instead of soaking into the housing
• Pedestal coating — the pedestal sits between the turbine housing and the block; coating it cuts the heat path into the engine valley
• Corrosion and thermal-fatigue resistant — cast iron scales, pits, and cracks over years of heat cycling; the ceramic barrier protects all three parts for the long haul

Features

• Direct OEM-style replacement for 2001-2004 6.6L Duramax LB7 (Federal Emissions)
• Built on the IHI RHG6 fixed-geometry platform — same architecture as factory
• 60.6/82mm factory-style compressor wheel
• 68/62mm factory-style turbine wheel
• New wastegate actuator, tested on every unit
• Ceramic coated turbine housing, center section, and pedestal
• Extreme duty journal bearings, 360-degree thrust bearing, step gap seal rings, VSR balanced
• Runs on the factory tune — no custom tuning required
• SL-310-021 turbo gasket kit, new oil feed line, new oil drain line, and turbo-to-catalytic-converter clamp included
• No core charge — ever
• Built brand new, never remanufactured

Fits 2001-2004 6.6L Duramax LB7

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

Turbo Applications

• Direct replacement for factory IHI RHG6 (2001-2004 6.6L Duramax LB7, Federal Emissions), Stock replacement

Replaces Factory OEM Part Numbers

• 1045837
• 2905769000
• 8973077110
• 8973077111
• 97307711
• 97720748
• BD1045837
• FPE-LB7-63

1-Year Limited Warranty

Every SPOOLOGIC turbocharger is covered by a 1-Year Limited Warranty against defects in materials and workmanship from the date of purchase. Warranty coverage requires that the unit first be shipped back to SPOOLOGIC for inspection. If SPOOLOGIC determines the failure was caused by a defect in materials or workmanship, the turbocharger will be repaired or replaced at SPOOLOGIC’s discretion. Warranty does not cover damage from foreign object debris, oil starvation, contaminated oil, extended oil change intervals, over-boosting, over-fueling, improper installation, use outside the listed fitment, cosmetic wear, coating discoloration, or normal heat cycling marks. Warranty does not cover labor, shipping, towing, downtime, or any other costs outside the turbocharger itself.