Bosch 0250201039 Diesel Glow Plug

Bosch Diesel Glow Plug 0250201039

Bosch Diesel Glow Plug 0250201039 is a direct-fit diesel glow plug built for cold-start performance in older Mercedes-Benz, BMW, and Lincoln diesel applications. It uses Bosch Duraterm dual-control coil technology to shorten glow time and improve heating response for faster engine starts.

Duraterm Glow Plug Technology

The Bosch Diesel Glow Plug line focuses on controlled current flow and rapid heat-up. This design helps the plug reach operating temperature quickly, supports post-glow operation on vehicles equipped with that system, and uses an Inconel heating element with a tapered seat, threaded terminal, 12 mm thread diameter, and 12 mm hex size. The 71 mm length and 25 mm reach match the specified diesel applications for accurate service replacement.

• Brand: Bosch Diesel Glow Plug
• Part number: 0250201039
• Material type: Inconel
• Fast/quick start: Yes
• Pre-heating time: 4.0
• Metal sheath type: Yes
• Thread diameter: 12 mm
• Seat type: Tapered
• Terminal type: Threaded

Vehicle Fitment

• Fits 1987 Mercedes-Benz 300D, N/A.
• Fits 1982-1985 Mercedes-Benz 300D, N/A.
• Fits 1986-1987 Mercedes-Benz 300SDL, N/A.
• Fits 1987 Mercedes-Benz 300TD, N/A.
• Fits 1981-1985 Mercedes-Benz 300TD, N/A.
• Fits 1978-1985 Mercedes-Benz 300SD, N/A.
• Fits 1985-1986 BMW 524td, N/A.
• Fits 1984-1985 Lincoln Continental, N/A.
• Fits 1985 Lincoln Mark VII, N/A.

Common search terms for this Bosch glow plug include Mercedes-Benz 300D glow plug replacement, BMW 524td diesel glow plug, and Lincoln Continental diesel glow plug 0250201039.

What It Helps Address

• Hard starting in cold diesel conditions
• Extended glow indicator wait time
• Slow combustion chamber heat-up during startup
• Rough initial idle after a cold start
• Reduced post-glow performance on equipped systems

Installation Notes

Verify thread diameter, reach, seat type, and terminal style before installation. Clean the cylinder head threads, inspect the glow plug harness or connector, and torque to the vehicle manufacturer’s specification. This part cross-references 0001598101 and 12231288245 for the same application.

Quality Assurance

Bosch has long-standing diesel fuel-injection and glow plug engineering experience, and the Duraterm design is built around controlled heating and self-regulating operation for consistent service in diesel starting systems.