Updated on March 16, 2026.
Upgrading a 6.7 Cummins intake horn improves airflow, throttle response, and high-load performance. However, gains are most noticeable on tuned or deleted trucks, while stock daily drivers may see limited improvement.
Upgrading your intake horn/manifold is a simple and effective way to improve airflow and throttle response. Choosing a high-performance intake horn helps optimize engine breathing, delivering smoother and more responsive performance.
Why Replace Your Intake Manifold?
Boost Your Horsepower
Aftermarket intake manifolds are designed to improve airflow efficiency compared to restrictive factory designs, helping enhance throttle response and overall performance.
Save on Fuel
A more efficient intake system burns fuel better, meaning less diesel waste. Since we rely on our vehicles so much, especially with fuel prices constantly changing, upgrading your intake can be a long-term solution to keep costs down.
When an Intake Horn Upgrade May Not Be Necessary
- Stock trucks with no tuning → gains are usually modest
- Daily driving only → limited noticeable improvement
- No airflow restrictions → upgrade impact is reduced
What Makes the Spelab 6.7 Cummins Intake Manifold Stand Out
Optimized Airflow for Better Performance
- Advanced Design: The Spelab 6.7 Cummins intake manifold is built to guide air into your engine more efficiently, helping your engine "breathe" better. This means less air resistance and smoother airflow, which leads to more power and quicker acceleration.
- Smooth Internal Pathways: Inside the manifold, the air channels are designed to reduce air turbulence (imagine trying to drink through a straw with bumps inside it). The smoother the air flows, the better your engine performs.
Strong and Durable Materials
- Aluminum Construction: Made from high-strength aluminum, this 6.7 cummins intake horn is both lightweight and tough. It's built to last, even under extreme conditions, like when your engine is running hot or under heavy load.
- Heat and Corrosion Resistant: Aluminum also makes it resistant to rust and heat so that you can rely on it for a long time, even in tough driving environments.
Protective Coating for Extra Durability
- Multiple Coating Options: You can choose between a sleek painted finish or a tougher powder-coated option. Paint makes it look great, while the powder coating is extra resistant to scratches and rust, perfect if your vehicle goes through harsh weather or terrain.
- Built for Heat: The manifold is designed to handle the high temperatures your engine creates, ensuring it doesn't wear out easily over time.
Works with Other Systems
EGR System Friendly: This manifold is designed to work seamlessly with either the Exhaust Gas Recirculation (EGR) system or an EGR delete kit.
When used with the EGR system, it helps reduce emissions and ensures compatibility with environmental standards.
Alternatively, pairing it with an EGR delete kit helps reduce carbon buildup, improving engine performance and longevity. This flexibility means you can choose the setup that best suits your needs without worrying about compatibility issues.
Ideal for Different Driving Conditions
- Improves Power and Acceleration: Whether you're driving around town, hitting the trails, or towing heavy loads, this intake manifold for 6.7 cummins upgrade can give your engine the extra boost it needs for smoother and stronger performance.
- Handles High Heat: If you live in a hot climate or push your engine hard, the Spelab intake manifold is built to handle those high temperatures without losing performance.
- Great for Modifications: If you're into upgrading your vehicle, this manifold works well with other engine mods, making it a great choice for enhancing your car's overall performance.
- Long-Lasting: Designed to be tough and reliable, it's perfect for drivers who need a part that can handle long-term, everyday use without wearing down.
$617
Buy NowWhy Replace Your Stock Intake Manifold with Spelab?
Everyone knows that stock auto parts are often the best when it comes to compatibility and fit. However, stock parts are only sometimes the best in terms of performance since manufacturers need to consider cost and overall efficiency. So, let's dive into the details and compare performance parts with OEM parts to see the real difference!
| Aspect | Spelab Intake Manifold | OEM Intake Manifold |
|---|---|---|
| Intake Port Size | Intake diameter of 86mm (3.54 inches), | Intake diameter of 45mm (1.77 inches), |
| Internal Volume | Internal volume of 3 liters, | Internal volume of 1.9 liters, |
| Material & Build | Cast iron or low-grade aluminum, with basic surface treatment | Cast iron or low-grade aluminum, with basic surface treatment |
| Airflow Efficiency | Optimized design and larger intake port airflow efficiency by 57.89% | Lower airflow efficiency |
| Compatibility | Fully compatible with EGR systems and heat shields, designed for seamless integration with these components. | Compatible with original car configurations |
| Price | $617 (Intake Manifold+Grid Heater Delete) | $300-400$ |
| CFM Airflow | 897 CFM | 421 CFM |
| MAF (Mass Airflow) | 72.7 lbs/min | 38.6 lbs/min |
*Data based on manufacturer specifications and internal airflow testing.
Spelab 6.7 Cummins Intake Horn vs Competitors
| Aspect | Spelab | Banks Monster-Ram | AFE Power | Shibby |
|---|---|---|---|---|
| Price | $698 | $1,159 | $569 | $420 |
| Material | Precision-cast aluminum with paint or powder-coated finish | High-quality cast aluminum | Cast aluminum | Cast aluminum |
| Intake Port Diameter | 86mm (3.54 inches) | 72mm (2.83 inches) | 65mm (2.56 inches) | 70mm (2.75 inches) |
| Internal Volume | 3 liters | 3 liters | 2.2 liters | 1.9 liters |
| intake plenum | Optional | Optional | Not included | Not included |
| High-Temperature Performance | Not included | Excellent with optional heat shield | Not included | Not included |
| CFM Gain | +476 | +515 | +42 | -9 |
| Mass Air Flow (lb/min) (at 20 in H2O) | 72.7 lb/min | 72.7 lb/min | 41.8 lb/min | 36.5 lb/min |
*Data based on manufacturer specifications and internal airflow testing.
SPELAB is an excellent choice for those seeking both performance and value. With its large 86mm intake port, airflow improvement of +476 CFM over OEM, and the ability to improve mass airflow to 72.7 lbs/min, it provides superior throttle response and maximum airflow (897 CFM). Although a heat shield is not included, Spelab's durable precision-cast aluminum construction ensures reliability even under demanding conditions. If you want the best combination of price, airflow enhancement, and overall performance, Spelab stands out as a clear winner.
Frequently Asked Questions (FAQ)
Q: Are there any affordable alternatives to the Spelab intake horn?
A: Yes! Check out this product: 3.5" Raw Performance SS Intake Manifold for 2007-2018 Dodge 6.7L Cummins Diesel. It's a more budget-friendly option that still outperforms OEM, priced at just $99!
Q: Is the fit for Spelab 6.7 cummins intake manifold compatible with Banks products?
A: Yes, Spelab's intake manifold is generally compatible with Banks products. If you're considering using Spelab's intake manifold with Banks components, it should work well together.
Q: What accessories come with the Spelab intake manifold?
A: Here's what you'll find in the box:
- 1 * Square Paper Gasket
- 1 * Round Paper Gasket
- 2 * Washers
- 1 * External Hex Flange Bolt M8L20L12
- 1 * External Hex Plug S14M221.5*L26
- 1 * O-Ring 3025.22.4
- 1 * Internal Hex Plug M121.25L12
- 2 * Internal Hex Flange Bolts M8L43L35 Grade 12.9
- 1 * Bracket Assembly (with Welded Nut)
- 1 * High-Pressure Oil Pipe φ8*Inner Diameter 4
- 1 * Short Coil
- 2 * Long Coils
- 14 * Dust Caps
- 1 * External Hex Wrench S6*L151
- 1 * Adhesive
- 1 * Aluminum Spacer 166.5L8
- 4 * Stainless Steel Washers 158L1
- 4 * Internal Hex Stainless Steel Bolts M81.25L28*Total Length L63
- 1 * M6 Round Head Internal Hex Bolt M6*L16
- 4 * Plugs 1/8-27NPT*L8.2
- 5 * Cable Ties (White)
- 1 * Grid Heater Delete Plate
Q: Does a 6.7 Cummins intake horn actually increase horsepower?
A: An intake horn upgrade can improve airflow and throttle response, which may lead to small horsepower gains. The biggest improvements are typically seen on tuned or modified trucks where airflow demand is higher.
Q: Will an intake manifold upgrade improve towing performance?
A: Yes, especially under load. Improved airflow can help the engine respond quicker when accelerating or merging while towing. However, the difference is more noticeable on trucks with supporting mods or tuning.
Q: Do I need tuning after installing a 6.7 Cummins intake horn?
A: No tuning is required for basic installation. However, pairing the intake horn with a proper tune can help maximize airflow gains and overall engine performance.
Q: Is a larger intake horn always better?
A: Not always. While a larger intake port can improve airflow at higher RPM and load, it may offer minimal benefit on a completely stock setup. The best results come from matching the intake upgrade with your overall build.
1 comment
Whats the differences between Spelab & Banks air intake for the cummins 6.7. Why woukd I buy or not buy one or the other mfg. Spelab’s price us less but is tge qualty, testing and performance the same as Banks or better.