Bosch 0250201055 Diesel Glow Plug

Reliable Diesel Glow Plug for Mercedes-Benz Models

The Bosch Diesel Glow Plug 0250201055 is engineered to provide consistent ignition performance for select Mercedes-Benz diesel vehicles. Designed with durable Inconel material and precise specifications, this glow plug supports efficient cold starts and reliable engine operation.

• Constructed from high-quality Inconel for durability and heat resistance
• Length of 69 mm (2.716535 inches) ensures proper fit and reach
• Threaded terminal type with a 12 mm thread diameter for secure connection
• Tapered seat type and 12 mm hex size for accurate installation
• Pre-heating time of approximately 4.0 seconds for timely ignition
• Compatible with Mercedes-Benz 300D, 300SD, 350SD, 350SDL, and S350 models

About the Bosch Diesel Glow Plug Product Line

The Bosch Diesel Glow Plug line is designed to meet the specific ignition needs of diesel engines by providing reliable heating elements that withstand high temperatures and repeated use. This product line focuses on delivering consistent pre-heating times and durable construction, making it suitable for various Mercedes-Benz diesel vehicles requiring dependable glow plugs.

Product Details and Specifications

This Bosch glow plug features a metal sheath made from Inconel, a nickel-chromium alloy known for its resistance to oxidation and thermal stress. The plug measures 69 mm in length with a total length of 2.716535 inches and a reach of 23 mm, ensuring it fits precisely within the combustion chamber. The threaded terminal type and 12 mm thread diameter provide a secure electrical connection, while the tapered seat type and 12 mm hex size facilitate proper sealing and installation torque. The pre-heating time of 4.0 seconds supports efficient engine starts in cold conditions.

Applications and Common Issues Addressed

• Improves cold start performance in Mercedes-Benz 300D, 300SD, 350SD, 350SDL, and S350 diesel engines
• Reduces engine misfires caused by faulty or worn glow plugs
• Helps prevent rough idling and poor acceleration related to ignition problems
• Supports consistent combustion for lower emissions and smoother operation
• Replaces damaged or corroded glow plugs to restore engine reliability

Installation Notes and Tips

Ensure the engine is cool before removing old glow plugs to avoid damage. Use a 12 mm hex socket for installation and tighten to manufacturer torque specifications to prevent leaks or breakage. Verify the threaded terminal connection is secure for proper electrical contact. It is recommended to replace all glow plugs simultaneously to maintain balanced engine performance.

Quality Assurance and Warranty

Bosch glow plugs are manufactured to meet strict quality standards, ensuring durability and consistent performance. The 0250201055 part number is backed by Bosch's quality control processes, although specific warranty details should be confirmed with the parts provider or vehicle manufacturer.