VSE 2020+ L5P Max Flow Billet Intercooler

Less Restriction. Lower Charge Temps. Better Efficiency.

The VSE Max Flow Billet Intercooler isn't just for high-horsepower trucks. It was designed to improve the charge-air system on every 2020+ L5P Duramax — stock, tuned, towing, or high-performance.

The factory intercooler uses a 1.5" thick core, 2.5" connections, and a combination of cast aluminum and plastic end tanks.

To improve on the factory design, we went back to the 3D modeling board and developed a max-effort L5P intercooler focused on airflow, thermal capacity, pressure drop, and durability.

We doubled the core thickness to 3", increased the inlet and outlet connections to a massive 3.5", and replaced the factory end tanks with full billet aluminum end tanks designed for better airflow distribution across the entire core.

Going from 2.5" to 3.5" connections alone provides approximately 96% more cross-sectional flow area.

WHY IT MATTERS — EVEN ON A STOCK TRUCK

An intercooler isn't only about maximum horsepower. It's part of the airflow path every time the engine is operating under boost.

Reducing restriction across the charge-air system reduces the pressure differential the turbocharger has to overcome to achieve the desired manifold pressure. Under normal driving and cruise conditions, a freer-flowing system can reduce turbocharger workload and allow the VGT system to operate with less restrictive vane positioning.

The result is a more efficient charge-air path with the potential for improved fuel economy, reduced pumping losses, and lower charge-air temperatures.

For a stock daily driver, that means improved efficiency. For a truck that tows, it means additional thermal capacity. For a tuned or high-horsepower truck, it means significantly more airflow potential as demand increases.

MAX FLOW FEATURES

✅ 3" thick high-flow intercooler core

✅ 2X factory core thickness

✅ 3.5" inlet and outlet connections

✅ 96% more connection flow area vs. OEM 2.5"

✅ Full billet aluminum end tanks

✅ 200 PSIG burst-pressure rating

✅ Larger, smoother end-tank transitions

✅ Reduced charge-air pressure drop

✅ Increased cooling capacity

✅ Improved resistance to heat soak

✅ Reduced turbocharger workload

✅ Potential for improved cruising efficiency and fuel economy

✅ No tuning required

✅ Direct drop-in installation

✅ Compatible with 3" and 3.5" aftermarket charge-air piping

✅ Designed for stock, tuned, towing, and high-horsepower trucks

✅ Direct fit for 2020+ L5P Duramax

✅ Lifetime warranty against manufacturing defects

NOT JUST A RACE TRUCK UPGRADE.

A stock truck benefits from reduced restriction and increased efficiency.

A towing truck benefits from increased thermal capacity and lower charge-air temperatures.

A tuned truck benefits from both.

And as horsepower and airflow increase, those advantages only become more important.

More airflow. Less pressure drop. Lower charge temperatures. Better efficiency.

No tuning required. No complicated conversion. Just a direct-fit upgrade to one of the most important components in the L5P charge-air system.

The VSE 2020+ L5P Max Flow Billet Intercooler is built to make the entire charge-air system work better — no matter how you use your Duramax.