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Installation of a fire ring gasket requires high yield head studs to ensure proper seat of the head to the cylinder block
The Progressive Add-A-Pack replaces the lower overload springs on the factory pack
The column of the pushrod must be made out of a different material and heat treated differently than the tips
and also cause fuel pumps to "click off" when refueling
The aluminum tubing features CNC mandrel bending for smooth airflow and excellent durability
PPE OEM Length Replacement High Flow Up-Pipes 06-07 6.6L GM Duramax LLY/LBZ RK-F2AS2004 Installation of a fire ringYour 6. 6L LLY LBZ Duramax engine produces high exhaust temperatures and pressure that can eventually cause factory up pipes to fail. Replace your factory up pipes with these High Flow Replacement Up Pipes from PPE. PPE has taken OEM replacement to a new level. These up pipes allow 53% greater flow than stock and are a direct bolt on to your factory manifolds. But unlike factory parts, PPE Up Pipes are manufactured from 11 gauge 304 stainless steel
