Glacier Diesel Power 2007.5–2024 Ram 6.7L Cummins Mega-Flo S-1 Intake Manifold – Pickup & Cab Chassis (201018-MFS1)
Description
Improving airflow on your 6.7L Cummins doesn't always mean completely redesigning the intake and fuel system.
The Glacier Diesel Power Mega-Flo S-1 Intake Manifold was developed for Cummins owners who want increased intake airflow while retaining a more factory-style installation—including one very important advantage: the factory fuel line is retained.
Designed for 2007.5–2024 Ram 6.7L Cummins Pickup and Cab & Chassis applications, the S-1 utilizes the better-flowing factory Cummins Cab & Chassis-style intake manifold and modifies it specifically for broader 6.7L Cummins compatibility and improved airflow.
As part of the Mega-Flo modification, the S-1 utilizes a high-flow 5-bolt intake design that removes the sixth mounting location from the intake entrance. A precision-machined gasket retention boss helps keep the intake gasket properly positioned and helps prevent gasket movement.
Unlike intake manifold upgrades that require changing or modifying the factory fuel line, the Mega-Flo S-1 retains the factory fuel line, making it an excellent choice for customers who want improved airflow without adding unnecessary complexity to the installation.
The S-1 was also designed to work as part of the complete Glacier Diesel Power intake system. Pair it with one of our Air-Boss Intake Plenums and Mega-Flo Arctic Grid Heaters to address multiple restrictions in the factory intake system while retaining cold-weather starting capability.
Whether you're towing, working the truck every day, or increasing horsepower, the Mega-Flo S-1 provides a proven, factory-based approach to improving airflow through the 6.7L Cummins intake system.
Features
- Designed and modified by Glacier Diesel Power
- Part Number: 201018-MFS1
- Fits 2007.5–2024 Ram 6.7L Cummins
- Compatible with Pickup and Cab & Chassis applications
- Based on the better-flowing factory Cummins Cab & Chassis-style intake manifold
- High-flow 5-bolt intake design
- Precision-machined gasket retention boss to help prevent gasket movement
- Retains the factory fuel line
- No aftermarket fuel line required
- MAP sensor provision for pickup applications
- Retains the correct factory EGR valve mounting location
- Designed for excellent factory-style fitment
- Two 1/8" NPT accessory ports for boost gauges and other accessories
- Works with Glacier Diesel Power Air-Boss Intake Plenums
- Works with Glacier Diesel Power Mega-Flo Arctic Grid Heaters
- Supports stock, towing, and performance applications
- Includes mounting hardware, gaskets, and NPT plugs
Why Upgrade to the Mega-Flo S-1?
The factory pickup intake manifold can become a restriction as airflow demand increases.
More fueling, larger turbochargers, towing under sustained load, and additional horsepower all increase the amount of air the engine needs to move efficiently.
The Mega-Flo S-1 provides a straightforward way to improve that portion of the intake system without requiring the customer to completely redesign everything around it.
The high-flow 5-bolt design removes the sixth mounting location from the intake entrance, helping open up the airflow path. Because removing that mounting point changes how the intake gasket is supported, Glacier Diesel Power machines a dedicated gasket retention boss into the manifold to help keep the gasket securely positioned.
Most importantly, the factory fuel line remains in place.
That makes the S-1 especially attractive for customers who want a high-flow intake manifold while maintaining a cleaner, more factory-style fuel system configuration.
Factory Fuel Line Compatibility
One of the biggest advantages of the Mega-Flo S-1 is its ability to retain the factory fuel line.
Some high-flow intake manifold configurations require an aftermarket fuel line or additional modifications to create the necessary clearance.
The S-1 does not.
The factory fuel line remains in place, eliminating the need to purchase an additional aftermarket fuel line or modify the factory line for installation.
For customers who want to improve airflow while keeping the fuel system as close to the factory configuration as possible, this makes the S-1 an excellent option.
Fewer unnecessary changes also mean a cleaner installation and fewer additional components to purchase.
High-Flow 5-Bolt Design
Airflow through the intake entrance is one of the areas Glacier Diesel Power addresses with the Mega-Flo S-1.
The S-1 utilizes a 5-bolt intake design, removing the sixth mounting location from the intake entrance to help eliminate an obstruction from the airflow path.
But simply removing a mounting point isn't enough.
Glacier Diesel Power also machines a precision gasket retention boss into the manifold. This helps properly locate and retain the intake gasket, reducing the possibility of gasket movement while maintaining the advantages of the more open 5-bolt configuration.
It's a small detail that's easy to overlook, but it's an important part of properly engineering the modification rather than simply removing material.
Designed Around a Proven Factory Casting
Rather than starting from scratch, the Mega-Flo S-1 takes advantage of something Cummins already did well.
The factory Cab & Chassis intake manifold uses a better-flowing casting than the factory pickup intake manifold. Glacier Diesel Power uses this factory-based design as the foundation for the S-1 and modifies it to improve airflow and expand its compatibility.
For pickup applications, Glacier Diesel Power adds the necessary MAP sensor provision while retaining the correct factory EGR valve mounting location.
We also add two 1/8" NPT accessory ports underneath the manifold, providing convenient connection points for boost gauges and other accessories.
The result is a modified factory-based manifold that combines improved airflow, proper gasket retention, factory fuel line compatibility, and the provisions necessary for a clean installation.
Glacier Tech Tip
The Mega-Flo S-1 is an excellent choice for customers who want to build a complete Glacier Diesel Power intake system while retaining the factory fuel line.
Pair the S-1 with the appropriate Glacier Diesel Power Air-Boss Intake Plenum to further increase available airflow through the intake plenum.
For customers who want to remove the restrictive factory grid heater but still need dependable cold-weather starting, the S-1 can also be used with our Mega-Flo Arctic Grid Heater systems.
Together, the S-1, Air-Boss, and Arctic Grid Heater can create a complete intake solution that addresses airflow restrictions while retaining factory fuel line compatibility and cold-weather starting capability.
Why Choose the S-1?
The S-1 fills an important spot in the Mega-Flo lineup.
It's for the customer who wants more airflow without unnecessary complication.
You retain the factory fuel line, gain the advantages of the high-flow 5-bolt intake design, maintain proper gasket retention, and still have the ability to integrate the manifold with Glacier Diesel Power's Air-Boss and Arctic Grid Heater systems.
For a daily driver, tow rig, work truck, or performance build where simplicity and factory-style compatibility matter, the S-1 is an extremely well-rounded intake manifold option.
Applications
Designed for:
- 2007.5–2009 Dodge Ram 2500 & 3500 6.7L Cummins
- 2010–2012 Ram 2500 & 3500 6.7L Cummins
- 2013–2018 Ram 2500 & 3500 6.7L Cummins
- 2019–2024 Ram 2500 & 3500 6.7L Cummins
- Compatible Cab & Chassis 6.7L Cummins applications
Kit Contents
Includes:
- Glacier Diesel Power Mega-Flo S-1 Intake Manifold
- Intake manifold mounting hardware
- Factory-style gaskets
- NPT plugs
Important Notes
- Fits 2007.5–2024 Ram 6.7L Cummins applications.
- Compatible with both Pickup and Cab & Chassis trucks.
- Retains the factory fuel line.
- No aftermarket fuel line is required.
- High-flow 5-bolt intake design.
- Precision-machined gasket retention boss helps prevent gasket movement.
- Uses a factory Cummins Cab & Chassis-style intake manifold as the foundation.
- MAP sensor provision is added for pickup compatibility.
- Retains the correct factory EGR valve mounting location.
- Includes two 1/8" NPT accessory ports.
- Compatible with Glacier Diesel Power Air-Boss Intake Plenums.
- Compatible with Glacier Diesel Power Mega-Flo Arctic Grid Heaters.
- Does NOT ship to California.
Complete Your Intake System
Pair the Mega-Flo S-1 with:
- Glacier Diesel Power 2007.5–2012 Pickup Air-Boss Intake Plenum
- Glacier Diesel Power 2013–2024 Pickup Air-Boss Intake Plenum
- Glacier Diesel Power 2007.5–2024 Cab & Chassis Air-Boss Intake Plenum
- Glacier Diesel Power Mega-Flo Standard Duty Single Element Arctic Grid Heater
- Glacier Diesel Power Mega-Flo Heavy Duty Dual Element Arctic Grid Heater
- Glacier Diesel Power Mega-Flo TVM Arctic Grid Heater
- Glacier Diesel Power Intake Manifold Gaskets
- Glacier Diesel Power Boost Bolt
- MAP Sensor & O-Ring
Glacier Diesel Power 2007.5–2024 Ram 6.7L Cummins Mega-Flo S-1 Intake Manifold – Pickup & Cab Chassis (201018-MFS1)
Description
Improving airflow on your 6.7L Cummins doesn't always mean completely redesigning the intake and fuel system.
The Glacier Diesel Power Mega-Flo S-1 Intake Manifold was developed for Cummins owners who want increased intake airflow while retaining a more factory-style installation—including one very important advantage: the factory fuel line is retained.
Designed for 2007.5–2024 Ram 6.7L Cummins Pickup and Cab & Chassis applications, the S-1 utilizes the better-flowing factory Cummins Cab & Chassis-style intake manifold and modifies it specifically for broader 6.7L Cummins compatibility and improved airflow.
As part of the Mega-Flo modification, the S-1 utilizes a high-flow 5-bolt intake design that removes the sixth mounting location from the intake entrance. A precision-machined gasket retention boss helps keep the intake gasket properly positioned and helps prevent gasket movement.
Unlike intake manifold upgrades that require changing or modifying the factory fuel line, the Mega-Flo S-1 retains the factory fuel line, making it an excellent choice for customers who want improved airflow without adding unnecessary complexity to the installation.
The S-1 was also designed to work as part of the complete Glacier Diesel Power intake system. Pair it with one of our Air-Boss Intake Plenums and Mega-Flo Arctic Grid Heaters to address multiple restrictions in the factory intake system while retaining cold-weather starting capability.
Whether you're towing, working the truck every day, or increasing horsepower, the Mega-Flo S-1 provides a proven, factory-based approach to improving airflow through the 6.7L Cummins intake system.
Features
- Designed and modified by Glacier Diesel Power
- Part Number: 201018-MFS1
- Fits 2007.5–2024 Ram 6.7L Cummins
- Compatible with Pickup and Cab & Chassis applications
- Based on the better-flowing factory Cummins Cab & Chassis-style intake manifold
- High-flow 5-bolt intake design
- Precision-machined gasket retention boss to help prevent gasket movement
- Retains the factory fuel line
- No aftermarket fuel line required
- MAP sensor provision for pickup applications
- Retains the correct factory EGR valve mounting location
- Designed for excellent factory-style fitment
- Two 1/8" NPT accessory ports for boost gauges and other accessories
- Works with Glacier Diesel Power Air-Boss Intake Plenums
- Works with Glacier Diesel Power Mega-Flo Arctic Grid Heaters
- Supports stock, towing, and performance applications
- Includes mounting hardware, gaskets, and NPT plugs
Why Upgrade to the Mega-Flo S-1?
The factory pickup intake manifold can become a restriction as airflow demand increases.
More fueling, larger turbochargers, towing under sustained load, and additional horsepower all increase the amount of air the engine needs to move efficiently.
The Mega-Flo S-1 provides a straightforward way to improve that portion of the intake system without requiring the customer to completely redesign everything around it.
The high-flow 5-bolt design removes the sixth mounting location from the intake entrance, helping open up the airflow path. Because removing that mounting point changes how the intake gasket is supported, Glacier Diesel Power machines a dedicated gasket retention boss into the manifold to help keep the gasket securely positioned.
Most importantly, the factory fuel line remains in place.
That makes the S-1 especially attractive for customers who want a high-flow intake manifold while maintaining a cleaner, more factory-style fuel system configuration.
Factory Fuel Line Compatibility
One of the biggest advantages of the Mega-Flo S-1 is its ability to retain the factory fuel line.
Some high-flow intake manifold configurations require an aftermarket fuel line or additional modifications to create the necessary clearance.
The S-1 does not.
The factory fuel line remains in place, eliminating the need to purchase an additional aftermarket fuel line or modify the factory line for installation.
For customers who want to improve airflow while keeping the fuel system as close to the factory configuration as possible, this makes the S-1 an excellent option.
Fewer unnecessary changes also mean a cleaner installation and fewer additional components to purchase.
High-Flow 5-Bolt Design
Airflow through the intake entrance is one of the areas Glacier Diesel Power addresses with the Mega-Flo S-1.
The S-1 utilizes a 5-bolt intake design, removing the sixth mounting location from the intake entrance to help eliminate an obstruction from the airflow path.
But simply removing a mounting point isn't enough.
Glacier Diesel Power also machines a precision gasket retention boss into the manifold. This helps properly locate and retain the intake gasket, reducing the possibility of gasket movement while maintaining the advantages of the more open 5-bolt configuration.
It's a small detail that's easy to overlook, but it's an important part of properly engineering the modification rather than simply removing material.
Designed Around a Proven Factory Casting
Rather than starting from scratch, the Mega-Flo S-1 takes advantage of something Cummins already did well.
The factory Cab & Chassis intake manifold uses a better-flowing casting than the factory pickup intake manifold. Glacier Diesel Power uses this factory-based design as the foundation for the S-1 and modifies it to improve airflow and expand its compatibility.
For pickup applications, Glacier Diesel Power adds the necessary MAP sensor provision while retaining the correct factory EGR valve mounting location.
We also add two 1/8" NPT accessory ports underneath the manifold, providing convenient connection points for boost gauges and other accessories.
The result is a modified factory-based manifold that combines improved airflow, proper gasket retention, factory fuel line compatibility, and the provisions necessary for a clean installation.
Glacier Tech Tip
The Mega-Flo S-1 is an excellent choice for customers who want to build a complete Glacier Diesel Power intake system while retaining the factory fuel line.
Pair the S-1 with the appropriate Glacier Diesel Power Air-Boss Intake Plenum to further increase available airflow through the intake plenum.
For customers who want to remove the restrictive factory grid heater but still need dependable cold-weather starting, the S-1 can also be used with our Mega-Flo Arctic Grid Heater systems.
Together, the S-1, Air-Boss, and Arctic Grid Heater can create a complete intake solution that addresses airflow restrictions while retaining factory fuel line compatibility and cold-weather starting capability.
Why Choose the S-1?
The S-1 fills an important spot in the Mega-Flo lineup.
It's for the customer who wants more airflow without unnecessary complication.
You retain the factory fuel line, gain the advantages of the high-flow 5-bolt intake design, maintain proper gasket retention, and still have the ability to integrate the manifold with Glacier Diesel Power's Air-Boss and Arctic Grid Heater systems.
For a daily driver, tow rig, work truck, or performance build where simplicity and factory-style compatibility matter, the S-1 is an extremely well-rounded intake manifold option.
Applications
Designed for:
- 2007.5–2009 Dodge Ram 2500 & 3500 6.7L Cummins
- 2010–2012 Ram 2500 & 3500 6.7L Cummins
- 2013–2018 Ram 2500 & 3500 6.7L Cummins
- 2019–2024 Ram 2500 & 3500 6.7L Cummins
- Compatible Cab & Chassis 6.7L Cummins applications
Kit Contents
Includes:
- Glacier Diesel Power Mega-Flo S-1 Intake Manifold
- Intake manifold mounting hardware
- Factory-style gaskets
- NPT plugs
Important Notes
- Fits 2007.5–2024 Ram 6.7L Cummins applications.
- Compatible with both Pickup and Cab & Chassis trucks.
- Retains the factory fuel line.
- No aftermarket fuel line is required.
- High-flow 5-bolt intake design.
- Precision-machined gasket retention boss helps prevent gasket movement.
- Uses a factory Cummins Cab & Chassis-style intake manifold as the foundation.
- MAP sensor provision is added for pickup compatibility.
- Retains the correct factory EGR valve mounting location.
- Includes two 1/8" NPT accessory ports.
- Compatible with Glacier Diesel Power Air-Boss Intake Plenums.
- Compatible with Glacier Diesel Power Mega-Flo Arctic Grid Heaters.
- Does NOT ship to California.
Complete Your Intake System
Pair the Mega-Flo S-1 with:
- Glacier Diesel Power 2007.5–2012 Pickup Air-Boss Intake Plenum
- Glacier Diesel Power 2013–2024 Pickup Air-Boss Intake Plenum
- Glacier Diesel Power 2007.5–2024 Cab & Chassis Air-Boss Intake Plenum
- Glacier Diesel Power Mega-Flo Standard Duty Single Element Arctic Grid Heater
- Glacier Diesel Power Mega-Flo Heavy Duty Dual Element Arctic Grid Heater
- Glacier Diesel Power Mega-Flo TVM Arctic Grid Heater
- Glacier Diesel Power Intake Manifold Gaskets
- Glacier Diesel Power Boost Bolt
- MAP Sensor & O-Ring