The Dodge Hellcat is a marvel of modern engineering, delivering supercharged V8 power that pushes beyond 700 horsepower from the factory. Yet even this legendary muscle car leaves substantial headroom for improvement. One of the most impactful modifications an owner can make is upgrading the intercooler. The stock intercooler, while adequate for normal driving, becomes a bottleneck under sustained hard acceleration, especially in hot weather or on the track. Heat soak causes intake air temperatures to skyrocket, triggering timing retard and robbing the engine of power. A high-performance intercooler can reduce charge air temperatures by 50–80°F, restoring lost horsepower and often adding 50–70 HP to the wheels. In this guide, we examine the top five intercooler brands that consistently deliver those gains, along with the technical details that matter.

Why Upgrading the Intercooler Matters

The Hellcat’s 2.4L IHI supercharger compresses air, which inherently heats it. Hot air is less dense, meaning less oxygen reaches the cylinders. The engine management system responds by pulling timing and reducing boost to prevent detonation. This is the classic “heat soak” scenario. An upgraded intercooler with a larger core, higher fin density, and better flow characteristics dissipates heat more effectively. Lower intake air temperatures allow the engine to maintain full timing and boost, translating directly into horsepower. Independent dyno tests have shown that high-quality aftermarket intercoolers can reduce intake temperatures by over 70°F and add between 40 and 70 wheel horsepower on stock-tuned Hellcats, and even more on tuned cars.

How Intercoolers Work in the Hellcat

The Hellcat uses a dual-stage intercooler system: a low-temperature coolant loop (air-to-water) sits between the supercharger and the engine, while a front-mounted air-to-air intercooler (charge air cooler) cools the supercharger’s inlet air. Aftermarket intercoolers typically replace the front-mounted air-to-air unit or supplement it with a larger unit. The key performance metrics are core volume, fin density (measured in fins per inch), and pressure drop. A well-designed intercooler maximizes surface area for heat transfer while minimizing restriction to airflow. Low pressure drop is critical because the supercharger already consumes significant parasitic power to compress air.

Key Features to Look For

  • Core Size and Volume – Bigger cores absorb more heat, but must fit within the Hellcat’s front bumper. Most aftermarket units are 3.5–4.5 inches thick and 8–12 inches tall.
  • Fin Density – Higher fin density provides more surface area but can restrict airflow. Look for 12–15 fins per inch for a good balance.
  • Construction Material – Cast aluminum end tanks with TIG-welded cores offer the best durability. Avoid plastic or crimped designs that leak under high boost.
  • Direct Fit vs. Custom – Direct-fit units bolt in with no cutting, while custom intercoolers may require minor modifications but offer superior performance.
  • Flow Characteristics – Smooth internal channels and tapered end tanks reduce turbulence and pressure drop.

Top 5 Intercooler Brands for Hellcat

1. Mishimoto

Mishimoto has built a strong reputation for engineering-driven cooling solutions. Their Hellcat intercooler features a high-density bar-and-plate core that is 35% larger than the factory unit. The end tanks are cast from 356 aluminum and are CNC-machined for a perfect seal. Mishimoto’s design prioritizes both thermal efficiency and low pressure drop. In independent testing, the Mishimoto intercooler lowered intake air temperatures by up to 78°F and added 48 wheel horsepower on a stock Hellcat. Installation is straightforward, with all necessary hardware included, and the unit comes with a lifetime warranty.

  • Core dimensions: 28" x 11.5" x 4" – significantly larger than OEM.
  • 100% leak-tested before shipping.
  • Includes billet aluminum drain plugs for easy maintenance.

For more details, see the official Mishimoto Hellcat Intercooler page.

2. HPS Performance

HPS Performance specializes in high-flow cooling components for forced induction engines. Their Hellcat intercooler uses a hybrid tube-and-fin core that provides excellent thermal transfer without excessive weight. The core is 3.5 inches thick and features 14 fins per inch, striking a strong balance between cooling and flow. HPS also offers an optional “shorty” version for those who want to keep the stock lower grille, as well as a full-size race core for maximum cooling. Owners report consistent intake temperature drops of 55–70°F and gains of 45–55 wheel horsepower on otherwise stock cars. The intercooler is a direct fit and includes high-quality silicone couplers and heavy-duty T-bolt clamps.

  • Lightweight 6061 aluminum construction.
  • CNC-machined end tanks for precise alignment.
  • Available with black or polished finish.

Visit the HPS Performance Hellcat intercooler collection for full product details.

3. AFE Power

AFE Power is synonymous with high-quality performance parts, and their Hellcat intercooler is no exception. The unit features a massive 3.6-inch thick core with a cast-aluminum inlet/outlet design that minimizes turbulence. AFE Power’s proprietary “ram-air” fin pattern is engineered to direct airflow evenly across the core, maximizing heat dissipation. In controlled testing, the AFE intercooler reduced charge air temperature by an average of 62°F and produced 55 wheel horsepower over the factory unit. The kit is supplied with all necessary hardware and detailed instructions, making it a popular choice for DIY enthusiasts. Additionally, AFE offers a variation with integrated port injection bungs for serious power builders.

  • Core volume increase of 40% vs. OEM.
  • Each unit is helium-leak tested to 60 psi.
  • Powder-coated black finish for corrosion resistance.

Read more about the AFE Power Hellcat intercooler options.

4. Bell Intercoolers

Bell Intercoolers has a long motorsports pedigree, supplying intercoolers for NASCAR, Formula Drift, and countless street performance builds. Their Hellcat offerings are fully custom — built to order with core dimensions and end-tank configurations tailored to the customer’s specific setup (e.g., with or without active grille shutters, custom inlet/outlet angles). Bell’s cores are bar-and-plate with a density up to 15 fins per inch, and they use heavy-duty 0.125-inch thick header plates for extreme durability. While not a direct-fit “off the shelf” product, Bell’s intercoolers have been independently verified to support over 1,200 horsepower while keeping intake temperatures within 15°F of ambient. Gains of 60–70 wheel horsepower are common on tuned Hellcats.

  • Fully customizable: size, shape, inlet/outlet orientation.
  • Hand-welded in the USA.
  • Proven in endurance racing conditions.

Explore custom options at Bell Intercoolers.

5. ZL1 Addons

ZL1 Addons is well-known among the muscle car community for its precision-engineered, direct replacement parts. Their Hellcat intercooler is designed to be the simplest install on the market — literally a bolt-in swap that uses all factory mounting points and hoses. The core measures 3.5 inches thick and features a stepped fin design that increases turbulence for better heat transfer. ZL1 Addons uses a CNC-machined billet aluminum inlet/outlet to ensure maximum flow. While this intercooler is slightly less aggressive than some full-race units, it consistently delivers 40–50 wheel horsepower gains with no modifications required. It has become a favorite for owners who want reliable performance without cutting or drilling.

  • Direct-fit, no modifications needed.
  • Includes high-temp silicone boots and t-bolt clamps.
  • Lifetime warranty.

Check out the ZL1 Addons Hellcat intercooler for more information.

Comparison Summary

When choosing an intercooler, consider your performance goals and willingness to modify the vehicle. Mishimoto and AFE Power offer the best balance of core size, temperature reduction, and ease of installation, making them ideal for street-driven Hellcats. HPS Performance provides excellent value with multiple core options. Bell Intercoolers is the clear winner for custom builds and extreme power levels, while ZL1 Addons is perfect for those who want maximum simplicity without sacrificing significant gains. All five brands are known for quality construction and real-world results. The following table (in text form) summarizes key aspects:

  • Mishimoto – Largest core, best temperature reduction (~78°F drop), bolt-in, lifetime warranty.
  • HPS Performance – Lightweight, optional shorty core, strong gains (~55°F drop).
  • AFE Power – Excellent overall performance, port injection option, ~62°F drop.
  • Bell Intercoolers – Fully custom, race-proven, supports 1,200+ HP.
  • ZL1 Addons – Simplest install, reliable 40–50 HP gain, no cutting required.

Conclusion

Upgrading the intercooler is one of the highest-return modifications you can make on a Hellcat. The factory unit simply cannot keep up with the heat generated by the supercharger under sustained load, leading to timing pull and lost performance. Each of the five brands covered here has proven its ability to lower intake temperatures significantly and deliver 50 or more extra horsepower. Whether you prioritize a straightforward install, the absolute lowest temperatures, or a custom race-spec setup, there is an intercooler that fits your needs. Pairing the intercooler with a quality tuner, a larger throttle body, and perhaps a lower pulley will unlock the full potential of your Hellcat. Don’t let heat soak hold you back—choose the intercooler that matches your driving style and enjoy consistent, powerful performance.