Beru GN858 Diesel Glow Plug

Reliable Diesel Glow Plug for Mercedes-Benz S350

The Beru GN858 diesel glow plug is engineered to provide consistent cold-start performance for your Mercedes-Benz S350. Designed with precision metal construction and specific terminal and thread specifications, this glow plug ensures optimal ignition in diesel engines operating at 12 volts.

Key Features of Beru GN858 Diesel Glow Plug

• Material: Durable metal construction for long-lasting performance
• Terminal Thread Size: 4 mm for secure electrical connection
• System Voltage: 12 volts, compatible with standard diesel ignition systems
• Operating Voltage: 11.5 volts for efficient glow plug heating
• Length: 69.0 mm (2.72 inches) suitable for Mercedes-Benz S350 engine design
• Terminal Type: Pin with male connector gender for proper fitment
• Hex Size: 12 mm for easy installation and removal
• Seat Type: Tapered to ensure a tight seal in the combustion chamber
• Thread Diameter: M12x1.25 for precise threading and secure mounting

Detailed Description of Beru GN858 Glow Plug

The Beru GN858 diesel glow plug is specifically designed for the Mercedes-Benz S350 diesel engine, providing reliable ignition assistance during cold starts. Its metal construction offers durability under high-temperature conditions, while the tapered seat type ensures a proper seal to prevent combustion gas leaks. The 12-volt system voltage compatibility and 11.5-volt operating voltage make it suitable for standard diesel ignition systems. The pin terminal with a male connector gender and 4 mm thread size allows for secure electrical connections, reducing the risk of misfires. The M12x1.25 thread diameter and 12 mm hex size facilitate straightforward installation and removal using common tools.

Applications and Common Issues Addressed

• Improves cold start performance in Mercedes-Benz S350 diesel engines
• Reduces white smoke emissions caused by incomplete combustion
• Helps prevent rough idling during engine warm-up
• Addresses misfiring issues related to faulty glow plugs
• Supports efficient fuel ignition in low-temperature conditions

Installation Notes and Tips

When installing the Beru GN858 glow plug, ensure the engine is cool to avoid damage. Use a 12 mm hex socket for proper torque application and avoid overtightening to prevent thread damage. Verify the tapered seat is clean and free of debris to ensure a proper seal. Confirm electrical connections match the pin terminal and male connector specifications for optimal performance.

Quality Assurance and Warranty

Beru manufactures the GN858 glow plug to meet OEM standards for fit and function on the Mercedes-Benz S350. While specific warranty details are not provided, Beru products typically undergo rigorous quality control to ensure durability and reliable operation in diesel ignition systems.