Pacific Performance Engineering 115041100 High-Flow Performance Studded Intercooler GM 6.6L Duramax LBZ LMM

The Pacific Performance Engineering (PPE) 115041100 High-Flow Performance Studded Intercooler is a significant upgrade over the factory intercooler for the GM 6.6L Duramax diesel engine. Engineered to maximize airflow and minimize pressure loss, this intercooler delivers cooler, denser charge air for measurable gains in horsepower, fuel economy, and reduced exhaust gas temperatures (EGTs).

The stock GM intercooler is a well-documented bottleneck — testing has shown it causes a 2 to 3+ PSI pressure drop, which can choke boost output even from large aftermarket turbochargers. The PPE High-Flow design virtually eliminates that wasted energy, keeping boost consistent and efficient throughout the powerband.

With 2,142 cubic inches of cooling volume — a 98% increase over the factory unit's 1,083 cubic inches — this intercooler doesn't just cool more air, it cools it faster and more efficiently. The all-aluminum, bar-and-plate construction with reinforced pinned/studded end tanks is purpose-built for high-boost applications in the 55 to 100+ PSI range, providing exceptional strength and durability under extreme operating conditions.

Key Features:

• 2,142 cu. in. cooling volume — 98% more than the factory unit (1,083 cu. in.)
• Virtually eliminates pressure drop across the intercooler
• All-aluminum construction for superior heat resistance and durability
• Reinforced pinned/studded end tanks for high-boost applications (55–100+ PSI)
• Mounts directly to stock mounting holes — no cutting or fabrication required
• Reduces exhaust gas temperatures (EGTs)
• Improves fuel economy
• Compatible with factory or PPE Performance Silicone Kits and PPE Intercooler Pipes

Whether you're building a street truck, a heavy towing rig, or a race application, the PPE 115041100 is a direct-fit, high-performance upgrade that outperforms the factory intercooler in every measurable category.