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  • LBZ mouthpiece on a LLY install kit

This is an install kit to put the better flowing Duramax LBZ and newer mouthpiece ( GM PART # 98011738 ) on the 04.5 - 05 LLY.

Unlike cutting and adapting the LLY tube, this makes the system a true 4" intake and requires no ECM recalibration.

It comes with a black powder coated tube and two automotive couplers and clamps.

Drive-ability is improved as well as quicker spool up.

This kit adds an amazing 35% increase in airflow over the stock LLY components!

Does not include the LBZ mouthpiece.

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LBZ mouthpiece on a LLY install kit

  • $115.00

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