Intake Horn

2010-2018 Dodge Ram 2500 & 3500 6.7L Cummins Performance Intake Horns & Manifold Elbows

Maximize incoming airflow volume, equalize air distribution across all six cylinders, and quicken turbocharger spool-up response with premium 2010–2018 6.7L Cummins 4th Gen intake horns from Full Force Diesel. On the 4th Generation common-rail platform, the factory intake elbow (or intake horn) is a notorious bottleneck. From the factory, it features cast aluminum walls with abrupt internal angles and a crushed profile designed around packaging constraints rather than pure engine efficiency. Upgrading to an engineered, smooth-bore aftermarket intake horn opens up the throat of your induction system, ensuring your compressed air charge enters the engine with minimal friction and maximum velocity.

Eliminating the Intakes Restrictions: Balancing Cylinder Air Distribution

The mechanical layout of a factory 6.7L intake plenum creates a severe geometric imbalance that robs the engine of potential efficiency, especially when scaling up performance tiers:

• Correcting Air Starvation on Cylinders 5 & 6: The stock intake horn dumps incoming air straight down into the front and center sections of the intake manifold plate. Because the factory elbow is restrictive and poorly angled, the air struggles to reach the back of the engine block. This causes air starvation on cylinders 5 and 6, forcing those rear cylinders to run hotter exhaust gas temperatures (EGTs). High-flow aftermarket intake horns feature sweeping, large-diameter mandrels that naturally direct a uniform volume of dense air all the way to the rear of the plenum, balancing combustion pressures and lowering overall EGTs.

• The Factory Grid Heater Bottleneck: Positioned directly beneath the stock intake horn sits the restrictive factory grid heater block. The internal heating elements act like a solid wall in the middle of your air stream, causing massive air turbulence and restriction. Many of our performance intake horns are designed to pair seamlessly with a grid heater delete block or feature an integrated side-mount heating element. This design choice completely clears out the intake neck floor, allowing for a massive increase in total volumetric flow.

Accelerated Spool-Up and Heavy-Duty Auxiliary Ports

Beyond expanding the physical capacity of your 4th Gen common-rail intake tract, an upgraded high-flow elbow transforms how your truck responds to driver inputs:

• Reducing Turbocharger Backpressure: When you eliminate internal air friction at the intake horn, the turbocharger doesn't have to work as hard to push compressed air into the engine. This drop in restriction allows your factory variable-geometry turbocharger (VGT) or an aftermarket non-VGT setup to build boost significantly sooner in the RPM range, sharpening throttle response and wiping out off-the-line lag when pulling a heavy trailer.

• Pre-Drilled NPT Accessory Ports: Premium aftermarket intake horns are engineered with convenience in mind for future modifications. They come pre-drilled and tapped with multiple NPT ports built directly into the casting. These auxiliary ports provide the perfect, high-visibility mounting locations to cleanly install boost gauges, exhaust gas temperature probes, water-methanol injection nozzles, or nitrous oxide systems without requiring any custom drilling or tapping of your hard parts.

At Full Force Diesel, we carry the rugged, smooth-flowing intake hardware and heavy-duty performance upgrades your 4th Gen inline-six needs to breathe efficiently. Explore our complete line of 2010–2018 6.7L Cummins 4th Gen intake horns, high-flow manifold elbows, grid heater delete blocks, and matching heavy-duty gaskets above to unlock the true breathing potential of your Ram today.