Cummins 2007.5–2018 Ram 6.7L Cummins MAP Sensor O-Ring Seal (4903482)
Description
A damaged or flattened MAP sensor O-ring can cause boost leaks, inaccurate sensor readings, and contamination around the intake manifold.
The Cummins 4903482 MAP Sensor O-Ring is a genuine OEM replacement seal designed for the 2007.5–2018 Ram 6.7L Cummins. This small but critical seal creates an airtight connection between the MAP (Manifold Absolute Pressure) sensor and the intake air horn, helping ensure accurate boost pressure readings while preventing unfiltered air and contaminants from entering the intake system.
Whether you're replacing the MAP sensor, cleaning accumulated soot from the sensor, or simply performing routine maintenance, installing a new O-ring is inexpensive insurance against future leaks.
Features
- Genuine Cummins OEM O-ring
- Cummins Part Number: 4903482
- Fits 2007.5–2018 Ram 6.7L Cummins
- Direct OEM replacement
- Seals the MAP sensor to the intake air horn
- Helps prevent boost leaks
- Maintains accurate MAP sensor readings
- Heat and oil resistant material
- Ideal when servicing or replacing the MAP sensor
Why Replace the MAP Sensor O-Ring?
The MAP sensor provides critical boost and manifold pressure information to the engine control module (ECM). If the O-ring becomes flattened, cut, brittle, or damaged, it may allow pressurized air to leak around the sensor or permit contaminants to bypass the seal.
Replacing the O-ring anytime the sensor is removed helps:
- Maintain an airtight seal
- Ensure accurate boost pressure readings
- Prevent dirt and soot from entering around the sensor
- Reduce the chance of future boost leaks
- Avoid reusing an aged or compressed seal
Glacier Tech Tip
The MAP sensor is one of the most commonly neglected maintenance items on the 6.7L Cummins.
Over time, soot and oil residue from the EGR system can coat the sensor tip, causing inaccurate boost readings and reduced engine performance. Whenever the MAP sensor is removed for cleaning or replacement, it's good practice to install a new O-ring to ensure a proper seal during reassembly.
Why Choose Genuine Cummins Parts?
While aftermarket O-rings may appear similar, genuine Cummins seals are manufactured to the correct dimensions and material specifications for long-term durability in the high-temperature intake environment.
Using an OEM seal helps ensure proper fit, sealing performance, and long service life.
Applications
Fits:
- 2007.5 Ram 2500 6.7L Cummins
- 2007.5 Ram 3500 6.7L Cummins
- 2008 Ram 2500 6.7L Cummins
- 2008 Ram 3500 6.7L Cummins
- 2009 Ram 2500 6.7L Cummins
- 2009 Ram 3500 6.7L Cummins
- 2010 Ram 2500 6.7L Cummins
- 2010 Ram 3500 6.7L Cummins
- 2010 Ram 4500 6.7L Cummins
- 2010 Ram 5500 6.7L Cummins
- 2011–2018 Ram 2500, 3500, 4500 & 5500 6.7L Cummins
Kit Contents
Includes:
- (1) Genuine Cummins MAP Sensor O-Ring
- Cummins Part Number: 4903482
Important Notes
- Genuine Cummins OEM replacement seal.
- Fits 2007.5–2018 6.7L Cummins applications.
- Designed for the factory MAP sensor.
- Recommended whenever the MAP sensor is removed.
- Inspect the MAP sensor and intake bore for carbon buildup before reinstallation.
- Lightly lubricate the O-ring with clean engine oil before installing to help prevent damage during assembly.
Common Failure Point
The MAP sensor O-ring is exposed to constant heat, oil vapor, and repeated service. Over time it can flatten, harden, or tear, reducing its ability to maintain an airtight seal.
A worn seal can contribute to minor boost leaks or allow contaminants to collect around the MAP sensor. Replacing the O-ring whenever the sensor is removed is a simple, inexpensive step that helps maintain proper sealing and accurate sensor performance.
Complete Your Repair
While servicing your MAP sensor, consider replacing:
- Genuine Cummins MAP Sensor
- Intake Plenum Gasket
- EGR Crossover Pipe Gaskets
- EGR Valve Gaskets
- Intake Air Horn Gaskets
- Replacement Cummins Sensors and Seals
Cummins 2007.5–2018 Ram 6.7L Cummins MAP Sensor O-Ring Seal (4903482)
Description
A damaged or flattened MAP sensor O-ring can cause boost leaks, inaccurate sensor readings, and contamination around the intake manifold.
The Cummins 4903482 MAP Sensor O-Ring is a genuine OEM replacement seal designed for the 2007.5–2018 Ram 6.7L Cummins. This small but critical seal creates an airtight connection between the MAP (Manifold Absolute Pressure) sensor and the intake air horn, helping ensure accurate boost pressure readings while preventing unfiltered air and contaminants from entering the intake system.
Whether you're replacing the MAP sensor, cleaning accumulated soot from the sensor, or simply performing routine maintenance, installing a new O-ring is inexpensive insurance against future leaks.
Features
- Genuine Cummins OEM O-ring
- Cummins Part Number: 4903482
- Fits 2007.5–2018 Ram 6.7L Cummins
- Direct OEM replacement
- Seals the MAP sensor to the intake air horn
- Helps prevent boost leaks
- Maintains accurate MAP sensor readings
- Heat and oil resistant material
- Ideal when servicing or replacing the MAP sensor
Why Replace the MAP Sensor O-Ring?
The MAP sensor provides critical boost and manifold pressure information to the engine control module (ECM). If the O-ring becomes flattened, cut, brittle, or damaged, it may allow pressurized air to leak around the sensor or permit contaminants to bypass the seal.
Replacing the O-ring anytime the sensor is removed helps:
- Maintain an airtight seal
- Ensure accurate boost pressure readings
- Prevent dirt and soot from entering around the sensor
- Reduce the chance of future boost leaks
- Avoid reusing an aged or compressed seal
Glacier Tech Tip
The MAP sensor is one of the most commonly neglected maintenance items on the 6.7L Cummins.
Over time, soot and oil residue from the EGR system can coat the sensor tip, causing inaccurate boost readings and reduced engine performance. Whenever the MAP sensor is removed for cleaning or replacement, it's good practice to install a new O-ring to ensure a proper seal during reassembly.
Why Choose Genuine Cummins Parts?
While aftermarket O-rings may appear similar, genuine Cummins seals are manufactured to the correct dimensions and material specifications for long-term durability in the high-temperature intake environment.
Using an OEM seal helps ensure proper fit, sealing performance, and long service life.
Applications
Fits:
- 2007.5 Ram 2500 6.7L Cummins
- 2007.5 Ram 3500 6.7L Cummins
- 2008 Ram 2500 6.7L Cummins
- 2008 Ram 3500 6.7L Cummins
- 2009 Ram 2500 6.7L Cummins
- 2009 Ram 3500 6.7L Cummins
- 2010 Ram 2500 6.7L Cummins
- 2010 Ram 3500 6.7L Cummins
- 2010 Ram 4500 6.7L Cummins
- 2010 Ram 5500 6.7L Cummins
- 2011–2018 Ram 2500, 3500, 4500 & 5500 6.7L Cummins
Kit Contents
Includes:
- (1) Genuine Cummins MAP Sensor O-Ring
- Cummins Part Number: 4903482
Important Notes
- Genuine Cummins OEM replacement seal.
- Fits 2007.5–2018 6.7L Cummins applications.
- Designed for the factory MAP sensor.
- Recommended whenever the MAP sensor is removed.
- Inspect the MAP sensor and intake bore for carbon buildup before reinstallation.
- Lightly lubricate the O-ring with clean engine oil before installing to help prevent damage during assembly.
Common Failure Point
The MAP sensor O-ring is exposed to constant heat, oil vapor, and repeated service. Over time it can flatten, harden, or tear, reducing its ability to maintain an airtight seal.
A worn seal can contribute to minor boost leaks or allow contaminants to collect around the MAP sensor. Replacing the O-ring whenever the sensor is removed is a simple, inexpensive step that helps maintain proper sealing and accurate sensor performance.
Complete Your Repair
While servicing your MAP sensor, consider replacing:
- Genuine Cummins MAP Sensor
- Intake Plenum Gasket
- EGR Crossover Pipe Gaskets
- EGR Valve Gaskets
- Intake Air Horn Gaskets
- Replacement Cummins Sensors and Seals