Dorman 904-549 Nitrogen Oxide (NOx) Sensor Bung Repair Kit

Reliable Nitrogen Oxide Sensor Bung Repair for Ram 2500 and 3500

The Dorman 904-549 Nitrogen Oxide (NOx) Sensor Bung Repair Kit is designed to restore the sensor mounting point on Ram 2500 and 3500 models. Crafted from durable stainless steel, this repair kit ensures a secure and precise fit for your vehicle's emission control system.

Key Features of the Dorman 904-549 NOx Sensor Bung Repair Kit

• Constructed from corrosion-resistant stainless steel for long-lasting durability
• Inside diameter of 15 mm and outside diameter of 30 mm for accurate sensor fitment
• Thread diameter M20 with a fine thread pitch of 1.5 mm for secure installation
• Includes one nitrogen oxide sensor bung for repair or replacement
• Compatible specifically with Ram 2500 and 3500 models

Detailed Description of the NOx Sensor Bung Repair Kit

This Dorman NOx sensor bung repair kit (part number 904-549) is engineered to replace damaged or worn sensor bungs on Ram 2500 and 3500 trucks. The stainless steel construction provides resistance to heat and corrosion, critical for emission control components exposed to exhaust gases. The precise dimensions, including a 15 mm inside diameter and 30 mm outside diameter, ensure the nitrogen oxide sensor seats properly, maintaining accurate emissions readings. The M20 fine thread with a 1.5 mm pitch allows for a tight, leak-free connection, essential for sensor performance and vehicle compliance with emission standards.

Common Applications and Issues Addressed

• Repairing stripped or damaged NOx sensor mounting threads
• Resolving exhaust leaks caused by faulty sensor bungs
• Restoring proper sensor alignment for accurate emission readings
• Preventing sensor failure due to improper fit or damage
• Maintaining compliance with emission control regulations on Ram 2500 and 3500

Installation Notes and Tips

• Ensure the exhaust area is cool before beginning installation
• Clean the mounting surface thoroughly to remove debris and corrosion
• Use appropriate tools to avoid damaging the fine M20 threads during installation
• Verify sensor bung alignment before tightening to prevent cross-threading
• Consult vehicle service manual for torque specifications and sensor handling

Quality Assurance and Warranty Information

Dorman manufactures the 904-549 NOx Sensor Bung Repair Kit to meet or exceed OEM standards for fit and function. The stainless steel material offers enhanced durability under harsh exhaust conditions. While specific warranty details may vary, Dorman typically provides coverage against defects in material and workmanship. Refer to Dorman’s official documentation for complete warranty terms.