The SPOOLOGIC SL-100-066 is a brand new performance upgrade turbo for 2024-2026 6.6L Duramax L5P/L5D trucks. It’s built on the updated BorgWarner B2BV-70A VGT platform — the same factory turbo on your 2024+ truck — upgraded with a larger billet compressor wheel, an application-specific larger turbine wheel, ceramic-coated hot side, your choice of compressor housing finish, and a stack of internal upgrades you don’t get on a factory drop-in.

This is the 2024+ L5P/L5D Stage 2 for the owner running a heavily-built truck on the new platform — bigger injectors, upgraded fueling, a high-horsepower tune, and supporting mods. Bolt this turbo on and go: same up-pipes, same down-pipe, same OEM plumbing. Every SPOOLOGIC turbo is built brand new — never remanufactured — and backed by a 1-Year Limited Warranty.

⚠ CUSTOM TUNING IS REQUIRED — READ BEFORE YOU BUY

Custom tuning is REQUIRED on the SL-100-066. This turbo will NOT operate correctly on the factory tune. The Stage 2 is a meaningful step beyond the factory turbo — the 67mm billet compressor, 96.2mm extended-tip exducer, and larger application-specific turbine all sit well outside the factory calibration’s expected airflow window. Running it on the stock tune will cause overboost, poor VGT vane control, drivability issues, and risk damage to the turbo or engine.

You must have a custom Stage 2 tune from a qualified L5P/L5D tuner loaded before the truck is driven. SPOOLOGIC does not supply, write, sell, or assist with custom tunes — please line up your tuning shop before the install.

Choose Your Compressor Housing Finish

Use the dropdown above to select your compressor housing finish. The 67mm 11-blade billet compressor wheel, application-specific 10-blade turbine wheel, ceramic-coated hot side, and complete install kit are standard on every finish option — only the compressor housing look changes.

• Raw — bead-blasted satin natural aluminum finish; no coating, just clean bare metal
• Black — deep gloss black powder coat — baked-on, far more durable than paint, won’t chip from heat cycling, and won’t fade
• Red — high-gloss red powder coat — baked-on, far more durable than paint, won’t chip from heat cycling, and won’t fade

Upgraded Internals — Standard

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

• 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 the factory 270-degree 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
• New VGT unison ring and vanes — required for proper variable-geometry operation, installed and ready to run

67/92.5/96.2mm 11-Blade Billet Compressor Wheel

The SL-100-066 uses a 5-axis CNC-machined forged billet aluminum compressor wheel sized for serious airflow. 11-blade full-length design moves more air per revolution than the factory wheel. Capped with a 96.2mm extended-tip exducer to keep the back side flowing with the larger inducer.

• Inducer diameter: 67mm
• Exducer diameter: 92.5mm base / 96.2mm extended-tip outer diameter
• Blade count: 11 full-length blades
• Material: 5-axis CNC-machined forged billet aluminum

70/75mm 10-Blade Turbine Wheel

Application-specific turbine wheel sized for the 2024+ L5P/L5D platform Stage 2 build. Matched to the Stage 2 compressor with a 10-blade design for the additional exhaust mass flow this build will generate — sized to keep up with the airflow on the cold side without surging or overspeeding under a Stage 2 tune. This turbine wheel is specific to the 2024-2026 application.

• Turbine inducer: 70mm
• Turbine exducer: 75mm
• Blade count: 10

Ceramic Coated Center Section, Turbine Housing & Pedestal

SPOOLOGIC ceramic coats the turbine housing, the center section (CHRA), and the pedestal on the SL-100-066. 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 EGR 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

Power Support

The SL-100-066 is built to cleanly support up to ~650-700 rwhp when paired with proper Stage 2 tuning, upgraded fueling, and supporting modifications. This is the build sized for trucks running larger injectors, an upgraded lift pump, and serious tuning — not just a chip and a delete. Remember: a turbo doesn’t make power on its own — tuning and fueling make power, and the turbo’s job is to support what the engine is producing. The Stage 2 has the airflow headroom to stay ahead of an aggressive fuel system without surging, choking, or overspeeding.

Exhaust Brake Compatibility

Retains OEM VGT-based exhaust brake function where equipped from the factory. The Stage 2 turbine and VGT vane geometry continue to work with GM’s factory exhaust braking calibration when paired with a Stage 2 tune that supports it.

What’s Included

• 1 SPOOLOGIC Stage 2 2024+ L5P/L5D Duramax turbocharger — brand new, VSR balanced, ceramic and powder coated, updated BorgWarner B2BV-70A platform
• 1 SPOOLOGIC SL-310-028 turbo gasket kit (15 pieces, 2024-2026 application-specific)
• 1 new oil feed line
• 1 new upper oil drain line
• 1 turbo-to-catalytic-converter clamp

Features

• Built on the updated BorgWarner B2BV-70A VGT platform — 2024-2026 application-specific
• 67/92.5/96.2mm 11-blade billet extended-tip compressor wheel
• 70/75mm 10-blade application-specific turbine wheel
• Sized to cleanly support up to ~650-700 rwhp with proper Stage 2 tuning and supporting mods
• Ceramic coated turbine housing, center section, and pedestal
• Choice of Raw, Black, or Red compressor housing finish
• Retains OEM VGT-based exhaust brake function where equipped from the factory
• Extreme duty journal bearings, 360-degree thrust bearing, step gap seal rings, VSR balanced
• New VGT unison ring and vanes installed
• Complete install kit included — SL-310-028 gasket kit, oil feed line, upper drain line, turbo-to-cat clamp
• Custom tuning required — will not operate correctly on the factory tune
• No core charge — ever
• Built brand new, never remanufactured

Fits 2024-2026 6.6L Duramax L5P / 6.6L Duramax L5D

• 2024 – 2026 Chevrolet Silverado GMC Sierra 2500 / 3500 6.6L Duramax L5P
• 2024 – 2026 Chevrolet Silverado 4500 / 5500 / 6500 6.6L Duramax L5D

Turbo Applications

• Direct upgrade for factory updated BorgWarner B2BV-70A (2024-2026 6.6L Duramax L5P pickup and L5D chassis cab), Stage 2 billet upgrade

Replaces Factory OEM Part Numbers

• 12725144

⚠ Not For Sale In California

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

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, running on a stock tune, tuning beyond the turbo’s rated operating range, 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.