Dorman 904-642 Diesel Exhaust Fluid (DEF) Heater

Overview of the Dorman 904-642 Diesel Exhaust Fluid Heater

The Dorman 904-642 Diesel Exhaust Fluid (DEF) Heater is designed specifically for Mercedes-Benz Sprinter, Sprinter 2500, and Sprinter 3500 models. This component ensures proper DEF temperature regulation to maintain emission control system efficiency in cold conditions.

• Compatible with Mercedes-Benz Sprinter, Sprinter 2500, and Sprinter 3500
• Specific fit for precise installation and performance
• Durable black plastic housing with a 4.3-inch inside diameter
• Equipped with two male electrical connectors featuring 3 to 4 terminals
• O-ring type inlet and outlet fittings for secure sealing
• Includes mounting hardware for straightforward installation
• Electronic level sensor integration
• 9-inch height for optimal fitment within the emission system

Detailed Product Description

The Dorman 904-642 DEF Heater is engineered to maintain the proper temperature of diesel exhaust fluid in colder environments, preventing crystallization and ensuring the emission system operates efficiently. Its black plastic housing provides durability while keeping the unit lightweight. The heater features two male electrical connectors with multiple terminals, allowing reliable electrical connections. The inlet and outlet fittings use O-ring seals to prevent leaks and maintain system integrity. This DEF heater is a specific fit for Mercedes-Benz Sprinter series vehicles, ensuring compatibility and ease of replacement.

Common Applications and Problem Resolution

• Prevents DEF freezing in low-temperature conditions
• Maintains proper DEF flow to the emission system
• Helps avoid emission system fault codes related to DEF temperature
• Supports compliance with emission regulations by ensuring DEF effectiveness
• Reduces risk of DEF pump or injector damage due to cold fluid

Installation Notes and Tips

When installing the Dorman 904-642 DEF Heater, ensure the electrical connectors are securely attached and the O-ring seals are properly seated to prevent leaks. The included mounting hardware facilitates a secure fit within the emission system assembly. Verify compatibility with your specific Mercedes-Benz Sprinter model before installation to ensure proper fitment and function.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards, providing reliable performance and durability. The 904-642 DEF Heater undergoes rigorous quality control to ensure it meets emission system requirements. Please refer to Dorman's warranty policy for specific coverage details.