We researched and compared the leading intercooler upgrades for the 6.7L Cummins to help you maintain optimal intake temperatures and engine longevity. Our evaluation focuses on core design, build materials, and real-world owner feedback to identify which units offer the best value and performance for your truck.
| Photo | Product | Score | Buy |
|---|---|---|---|
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Mishimoto MMIC-CCS-12 Overall Best Cast aluminum end tanks |
9.0 | 🛒 Check Price |
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Banks Power 42740 Premium Choice High flow technicooler design |
8.7 | 🛒 Check Price |
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AFE Power 46-70042 High Performance 100% TIG welded aluminum |
8.3 | 🛒 Check Price |
|
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SPELAB Intercooler Best Value T6061 aluminum construction |
7.9 | 🛒 Check Price |
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XDP X-Street Intercooler Budget Friendly Tube and fin core design |
7.5 | 🛒 Check Price |
|
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Sinister Diesel SD-IC-12 Distinctive Style Sinister Blue powder coat |
7.3 | 🛒 Check Price |
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MBRP MBRP90100 Economy Option Aluminum bar and plate core |
7.2 | 🛒 Check Price |
1. Mishimoto MMIC-CCS-12: Overall Best
In our evaluation, the Mishimoto MMIC-CCS-12 stands out for its robust cast aluminum end tanks which prevent cracking under high boost, a common failure point in stock units. Based on owner feedback and the spec sheets, this unit consistently maintains lower intake air temperatures, which is crucial for 6.7 Cummins engines running heavy tunes.
However, buyers should be aware that the installation process can be cumbersome due to the unit’s size and density. We compared various user reports and found that some individuals struggle with clearance against the radiator support, requiring substantial patience during fitment.
- Bar and plate core design
- Powder coated finish for protection
- Includes boots and clamps
Pros: Significant drop in intake temps; Heavy duty construction
Cons: Can be tight fit with larger aftermarket piping
2. Banks Power 42740: Premium Choice
The Banks Power 42740 is engineered with a focus on aerodynamics, utilizing a unique Technicooler design that maximizes airflow while minimizing pressure drop. Our research indicates that the optimized geometry significantly reduces boost pressure loss compared to stock, translating directly to better throttle response and engine efficiency.
Despite its performance credentials, the premium nature of this product means it represents a significant investment. Owners looking for a budget-friendly solution should skip this option, as the price point is steep even though the material quality justifies the expense.
- Banks exclusive high density core
- Optimized inlet/outlet geometry
- Increases airflow up to 75%
Pros: Superior engineering and airflow; Exceptional build quality; Noticeable power gain
Cons: Higher cost relative to the market average
3. AFE Power 46-70042: High Performance
AFE Power has designed the 46-70042 with an extra-large bar and plate core that prioritizes maximum heat dissipation for high-horsepower builds. We researched the Multi-Directional Vane technology and found that it effectively channels air to reduce turbulence, which helps maintain consistent boost levels throughout the RPM range.
While the performance metrics are impressive, we compared installation notes and identified that the core depth can cause clearance issues with active grille shutters on some Ram configurations. If your truck relies heavily on these aerodynamic features and you do not want to modify the shroud, this may not be the ideal choice.
- Extra-large bar and plate core
- MDV technology for smooth flow
- Heavy duty silicone boots
Pros: Aggressive cooling capability; Smooth internal transitions reduce turbulence; Durable finish
Cons: Fitment can interfere with certain grille shutters on specific model years
4. SPELAB Intercooler: Best Value
The SPELAB Intercooler offers a compelling balance of performance and cost, featuring a T6061 aluminum construction that significantly increases core volume over the factory cooler. In our evaluation, this unit is a strong contender for daily drivers who need better heat rejection but are not pushing limit horsepower levels.
Based on aggregated owner feedback, the primary trade-off is in the finish and weld consistency, which while functional, does not match the aesthetic perfection of top-tier American-made brands. If you are building a show truck or demand flawless craftsmanship under the hood, you might want to look elsewhere.
- Increased core volume for better cooling
- Includes heavy duty clamps
- Direct OEM replacement fit
Pros: Very accessible price point; Adequate cooling for stock to mildly tuned trucks; Easy installation
Cons: Weld quality can be inconsistent compared to premium brands
5. XDP X-Street Intercooler: Budget Friendly
XDP designed the X-Street Intercooler as an entry-level upgrade for those maintaining stock turbo setups or running light tunes. We compared this unit against OEM specifications and confirmed that it offers improved airflow and heat dissipation without breaking the bank, making it a solid entry point into intercooler upgrades.
However, the tube and fin core design is generally less robust against road debris and pressure spikes compared to the bar and plate designs found in our higher-ranked picks. We recommend skipping this product if you plan on running high boost pressures, as the construction may not withstand extreme stress over long periods.
- Designed for stock turbos
- Improves intake air temperature
- Lightweight design
Pros: Affordable upgrade over stock; Sufficient for mild tuning; Easy to handle during install
Cons: Tube and fin design is less durable than bar and plate
6. Sinister Diesel SD-IC-12: Distinctive Style
The Sinister Diesel SD-IC-12 is well known for its signature blue powder coat finish that adds visual pop to the engine bay. Our research into the specifications shows a standard high-efficiency core that provides better flow than the restrictive stock intercooler, helping to regain lost power from heat soak.
Unfortunately, we found consistent feedback regarding fitment challenges where the mounting tabs do not align perfectly with factory locations without modification. If you are looking for a bolt-on affair that requires zero fabrication or tweaking, this product will likely cause frustration during the installation phase.
- High efficiency core design
- Signature sinister blue finish
- Includes all necessary hardware
Pros: Unique aesthetic appeal; Decent cooling improvement; Brand recognition in diesel community
Cons: Reported fitment issues requiring modification of mounting brackets
7. MBRP MBRP90100: Economy Option
The MBRP MBRP90100 serves as a functional, no-frills replacement for the stock intercooler, utilizing a bar and plate core to effectively lower exhaust gas temperatures. We compared user experiences and noted that many owners appreciate the straightforward functionality that brings reliability back to their cooling system without unnecessary complexity.
A significant drawback highlighted in our evaluation is the lack of clarity in the provided installation instructions, which can turn a standard project into a lengthy ordeal. If you are a novice mechanic relying heavily on detailed guides, you may find the support documentation for this product lacking.
- Direct fit replacement
- Lowers EGTs
- Mandrel bent tubing
Pros: Lowers exhaust gas temperatures effectively; Simple design; Good for basic upgrades
Cons: Installation instructions are often vague or unclear
Frequently Asked Questions
Will an upgraded intercooler add horsepower to my 6.7 Cummins?
An upgraded intercooler primarily restores horsepower lost due to heat soak. It does not create power on its own, but it allows your engine to maintain consistent performance by providing cooler, denser air, which is especially important when running performance tunes.
What is the difference between bar and plate and tube and fin cores?
Bar and plate cores are generally more durable and offer better cooling efficiency but are often heavier. Tube and fin cores are lighter and offer good airflow but can be more susceptible to damage from road debris and higher boost pressures.
Do I need to replace my intercooler boots when installing a new intercooler?
It is highly recommended to replace the boots and clamps whenever you install a new intercooler. The old rubber boots are often heat-aged and hardened, and reusing them can lead to boost leaks, which will negate the performance gains of the new intercooler.
How difficult is it to install an intercooler on a 6.7 Cummins?
Installation difficulty is moderate to high, typically requiring the removal of the front bumper, grille, and sometimes the fan shroud. It usually takes between 4 to 6 hours for a mechanic, but may take longer for a DIYer in a home garage.
Will these intercoolers fit both the 5th Generation (2019+) and older models?
No, the 2019 and newer 5th Generation Rams have a completely different front-end configuration and cooling package. You must ensure the intercooler is specifically designed for your model year, as 2010 to 2018 kits will not fit 2019 to 2024 trucks.
Our Verdict
The Mishimoto MMIC-CCS-12 earns our top recommendation for its exceptional balance of cooling efficiency and robust build quality suited for both daily driving and heavy towing. The Banks Power 42740 is a close runner up, offering superior airflow engineering for those prioritizing maximum performance potential.
