Turbos for the GM Duramax

Turbochargers, VGT units, turbo rebuild kits, and upgrade turbos for the GM Duramax diesel — restore stock boost or add drop-in and compound turbo power to your GM HD diesel.

1 part

Match turbos to your engine

Half of what gets diagnosed as a bad Duramax turbo is a sticking vane mechanism or a dead vane actuator — both far cheaper to fix than the turbo. Know which unit your engine came with before you shop.

Generation	What it means for this part
LB7 (2001–2004)	The only Duramax that left the factory with a fixed-geometry, wastegated IHI turbo. No electronic vane control and no factory exhaust brake.
LLY / LBZ / LMM (2004.5–2010)	Garrett variable-geometry (VGT) turbos with an electronic vane actuator. Sticking vanes and failed actuators are common — and serviceable. These trucks also carry the restrictive factory turbo inlet mouthpiece.
LML (2011–2016)	Revised Garrett VGT whose vanes also perform factory exhaust-brake duty, so a sticking mechanism costs you the brake as well as the boost.
L5P (2017+)	A larger, electronically controlled VGT with far more airflow from the factory. Most L5P owners never touch it unless they're building.

Before you buy

→ Prove the turbo is bad: check vane movement and the actuator before you buy a cartridge.
→ On 2004.5–2010 trucks, replace the factory turbo inlet mouthpiece while the turbo is out — it's a documented restriction and never easier to reach.
→ Back added boost with head studs, fuel supply, and EGT monitoring, not just a bigger compressor.

Not sure which engine you have? Decode it from the eighth digit of your VIN with the Duramax VIN & engine code decoder, or map your year and platform in the generations & fitment guide.

Find turbos on eBay Motors

Used, OEM, and hard-to-find turbos for the Duramax — live listings, prices set by the seller.

Search Duramax turbos

Browse every live “duramax diesel turbo turbocharger” listing on eBay →

ICT Billet Duramax Turbo Diesel 2004.5-10 LBZ LLY LMM Mouth Piece Resonator Noise Reduction Plug Cover Cap 6.6L Seal Billet Aluminum Made in America ICT Billet 551503

406 owner reviews

$23.00 In Stock at Amazon

ICT Billet Duramax Turbo Diesel 2004.5-10 LBZ LLY LMM Mouth Piece Resonator Noise Reduction Plug Cover Cap 6.6L Seal Billet Aluminum Made in America ICT Billet 551503. Turbocharger hardware for the Duramax — restore lost boost or add drop-in and compound turbo power.

Restores lost boost
Drop-in & upgrade options

Buy on Amazon Prime Eligible

Read before you buy: turbos guides

Written for this exact system, generation by generation.

Best Duramax Turbo Upgrades

Which turbo came on your engine, how to fix a sticking VGT, and when to step up to a drop-in or compounds.

Head Gasket & Head Stud Guide

Why more boost lifts heads, and the clamping fix that lets a turbo upgrade stick.

Tuner & Programmer Buyer's Guide

A turbo only moves air; the tune is what commands it — and monitors EGT.

Common Problems by Generation

Soot loading, vane sticking, and the rest of each generation's known list.

Parts that go with these

Air Intake Exhaust & DPF Head Studs & Gaskets

Turbos: common questions

Which Duramax generations have a VGT turbo?

Every one from the LLY (2004.5) forward. The LB7 (2001–2004) is the only 6.6L with a fixed-geometry, wastegated turbo. From the LLY onward you're shopping Garrett variable-geometry units, and the L5P runs a larger electronically controlled version of the same design.

Can a sticking VGT be fixed without replacing the turbo?

Often, yes. Cleaning the vane mechanism, replacing the vane position actuator or its sensor, or fitting a rebuild kit restores a turbo that's only down on boost. Replace the cartridge or the whole unit when there's shaft play you can feel, damaged wheels, or oil passing into the intake.

Do I need a bigger turbo, or just a healthy one?

Most trucks want a healthy one. A stock-frame drop-in VGT upgrade is the practical step for a tuned truck that still tows and drives daily — it bolts into the factory location and keeps the electronic vane control. Larger fixed-geometry units and compounds bring supporting fuel, head-stud, and transmission work with them.