Cummins 2007.5–2024 Ram 6.7L Cummins Standpipe to Cooler Adapter O-Ring (5266152)
Description
A small coolant leak can often be traced back to one inexpensive seal.
The Cummins 5266152 Standpipe to Cooler Adapter O-Ring is a genuine OEM replacement seal used between the coolant standpipe and EGR cooler adapter on 2007.5–2024 Ram 6.7L Cummins engines. This high-temperature O-ring provides a leak-free seal at one of the most common coolant leak locations on the 6.7L Cummins.
Whether you're replacing the EGR cooler, removing the coolant standpipe, repairing a coolant leak, or performing preventative maintenance, replacing this O-ring during reassembly is inexpensive insurance against future coolant leaks.
Features
- Genuine Cummins OEM O-ring
- Cummins Part Number: 5266152
- Fits 2007.5–2024 Ram 6.7L Cummins
- Direct OEM replacement
- Seals the coolant standpipe to the EGR cooler adapter
- Helps prevent coolant leaks
- High-temperature coolant-resistant material
- Ideal during EGR cooler or standpipe service
Why Replace the O-Ring?
Over time, constant heat cycles and coolant exposure cause rubber seals to harden, flatten, and lose elasticity.
Once the coolant standpipe is removed, the original O-ring should not be reused. Installing a new seal helps:
- Prevent coolant leaks
- Restore proper sealing
- Reduce the chance of repeat repairs
- Protect against coolant loss
- Ensure a reliable repair during reassembly
Replacing the O-ring while everything is apart is far easier than tearing the engine back down to fix a leak later.
Glacier Tech Tip
One of the most common coolant leaks on the 6.7L Cummins originates at the coolant standpipe connection.
Whenever the standpipe or EGR cooler is removed, inspect the sealing surfaces for corrosion, pitting, or debris before installing the new O-ring. Lightly lubricating the O-ring with clean coolant before installation helps prevent it from twisting or being damaged during assembly.
Why Choose Genuine Cummins Parts?
Cooling system seals operate in a demanding environment with constant temperature changes and pressure cycles.
Genuine Cummins O-rings are manufactured to OEM specifications for proper fit, material quality, and long-term durability. Using the correct seal helps ensure a leak-free repair without worrying about incorrect sizing or inferior materials.
Applications
Fits:
- 2007.5 Ram 2500 & 3500 6.7L Cummins
- 2008 Ram 2500, 3500, 4500 & 5500 6.7L Cummins
- 2009–2024 Ram 2500, 3500, 4500 & 5500 6.7L Cummins
Note: Fits 2007.5–2024 Ram pickup applications equipped with the 6.7L Cummins. Verify your application before ordering, as some cab & chassis configurations may use different cooling components.
Kit Contents
Includes:
- (1) Genuine Cummins Standpipe to Cooler Adapter O-Ring
- Cummins Part Number: 5266152
Important Notes
- Genuine Cummins OEM replacement seal.
- Fits 2007.5–2024 6.7L Cummins applications.
- Used at the coolant standpipe to EGR cooler adapter connection.
- Recommended whenever the standpipe or EGR cooler is removed.
- Lightly lubricate the O-ring before installation.
- Inspect sealing surfaces before reassembly.
- Verify proper coolant level after installation and pressure test the cooling system if necessary.
Common Failure Point
The coolant standpipe connection is one of the more common sources of coolant seepage on the 6.7L Cummins. As the factory O-ring ages, it can become brittle or flattened, allowing coolant to leak around the standpipe connection.
Replacing the O-ring during EGR cooler or standpipe service helps prevent repeat coolant leaks and eliminates one of the most common causes of coolant loss on these engines.
Complete Your Repair
While servicing your cooling system, consider replacing:
- Coolant Standpipe
- EGR Cooler Gaskets
- EGR Crossover Pipe Gaskets
- Intake Manifold Gasket
- MAP Sensor O-Ring
- Replacement Cummins Sensors and Seals
- Fresh OEM-Approved Engine Coolant
Cummins 2007.5–2024 Ram 6.7L Cummins Standpipe to Cooler Adapter O-Ring (5266152)
Description
A small coolant leak can often be traced back to one inexpensive seal.
The Cummins 5266152 Standpipe to Cooler Adapter O-Ring is a genuine OEM replacement seal used between the coolant standpipe and EGR cooler adapter on 2007.5–2024 Ram 6.7L Cummins engines. This high-temperature O-ring provides a leak-free seal at one of the most common coolant leak locations on the 6.7L Cummins.
Whether you're replacing the EGR cooler, removing the coolant standpipe, repairing a coolant leak, or performing preventative maintenance, replacing this O-ring during reassembly is inexpensive insurance against future coolant leaks.
Features
- Genuine Cummins OEM O-ring
- Cummins Part Number: 5266152
- Fits 2007.5–2024 Ram 6.7L Cummins
- Direct OEM replacement
- Seals the coolant standpipe to the EGR cooler adapter
- Helps prevent coolant leaks
- High-temperature coolant-resistant material
- Ideal during EGR cooler or standpipe service
Why Replace the O-Ring?
Over time, constant heat cycles and coolant exposure cause rubber seals to harden, flatten, and lose elasticity.
Once the coolant standpipe is removed, the original O-ring should not be reused. Installing a new seal helps:
- Prevent coolant leaks
- Restore proper sealing
- Reduce the chance of repeat repairs
- Protect against coolant loss
- Ensure a reliable repair during reassembly
Replacing the O-ring while everything is apart is far easier than tearing the engine back down to fix a leak later.
Glacier Tech Tip
One of the most common coolant leaks on the 6.7L Cummins originates at the coolant standpipe connection.
Whenever the standpipe or EGR cooler is removed, inspect the sealing surfaces for corrosion, pitting, or debris before installing the new O-ring. Lightly lubricating the O-ring with clean coolant before installation helps prevent it from twisting or being damaged during assembly.
Why Choose Genuine Cummins Parts?
Cooling system seals operate in a demanding environment with constant temperature changes and pressure cycles.
Genuine Cummins O-rings are manufactured to OEM specifications for proper fit, material quality, and long-term durability. Using the correct seal helps ensure a leak-free repair without worrying about incorrect sizing or inferior materials.
Applications
Fits:
- 2007.5 Ram 2500 & 3500 6.7L Cummins
- 2008 Ram 2500, 3500, 4500 & 5500 6.7L Cummins
- 2009–2024 Ram 2500, 3500, 4500 & 5500 6.7L Cummins
Note: Fits 2007.5–2024 Ram pickup applications equipped with the 6.7L Cummins. Verify your application before ordering, as some cab & chassis configurations may use different cooling components.
Kit Contents
Includes:
- (1) Genuine Cummins Standpipe to Cooler Adapter O-Ring
- Cummins Part Number: 5266152
Important Notes
- Genuine Cummins OEM replacement seal.
- Fits 2007.5–2024 6.7L Cummins applications.
- Used at the coolant standpipe to EGR cooler adapter connection.
- Recommended whenever the standpipe or EGR cooler is removed.
- Lightly lubricate the O-ring before installation.
- Inspect sealing surfaces before reassembly.
- Verify proper coolant level after installation and pressure test the cooling system if necessary.
Common Failure Point
The coolant standpipe connection is one of the more common sources of coolant seepage on the 6.7L Cummins. As the factory O-ring ages, it can become brittle or flattened, allowing coolant to leak around the standpipe connection.
Replacing the O-ring during EGR cooler or standpipe service helps prevent repeat coolant leaks and eliminates one of the most common causes of coolant loss on these engines.
Complete Your Repair
While servicing your cooling system, consider replacing:
- Coolant Standpipe
- EGR Cooler Gaskets
- EGR Crossover Pipe Gaskets
- Intake Manifold Gasket
- MAP Sensor O-Ring
- Replacement Cummins Sensors and Seals
- Fresh OEM-Approved Engine Coolant