NGK 9970 Diesel Glow Plug

Reliable Diesel Glow Plug for Mercedes-Benz Vehicles

The NGK Glow Plug 9970 is engineered to provide consistent cold-start performance for select Mercedes-Benz diesel models. Designed with a ceramic type material and a 12-volt system voltage, this diesel glow plug ensures efficient ignition in demanding conditions.

• Ceramic type material for durability and heat resistance
• Terminal thread size: M4 with pin terminal type
• System voltage: 12 volts, operating voltage: 7.00 volts
• Length: 5.86 inches with a flat seat type for secure fitment
• Thread diameter: 0.313 inches and hex size: 8 mm for precise installation

About the NGK Glow Plug Product Line

The NGK Glow Plug line is designed specifically for diesel ignition systems, focusing on reliable heating elements and robust construction. The 9970 part number belongs to this line, offering compatibility and performance tailored to diesel engines in Mercedes-Benz models. NGK Glow Plugs are manufactured to meet strict quality standards, ensuring consistent ignition and reduced emissions.

Detailed Product Description

This NGK diesel glow plug (part number 9970) features a ceramic type heating element that provides rapid and uniform heating to assist cold starts in diesel engines. The M4 terminal thread size with a pin terminal type allows for secure electrical connections. Its 12-volt system voltage and 7.00-volt operating voltage are optimized for the ignition systems found in Mercedes-Benz diesel vehicles. The flat seat type and 0.313-inch thread diameter ensure proper sealing and fitment, while the 8 mm hex size facilitates straightforward installation and removal.

Compatible Mercedes-Benz Models

• Mercedes-Benz E250, E320, E350
• Mercedes-Benz GL320, GL350, GLE300d
• Mercedes-Benz GLK250
• Mercedes-Benz ML250, ML320, ML350
• Mercedes-Benz R320, R350
• Mercedes-Benz Sprinter 2500, Sprinter 3500, Sprinter 3500XD

Common Issues Addressed by NGK Glow Plug 9970

• Difficulty starting diesel engines in cold weather
• Extended cranking times during ignition
• Inconsistent engine warm-up performance
• Increased exhaust emissions due to incomplete combustion
• Glow plug warning lights or fault codes in compatible Mercedes-Benz models

Installation Notes and Tips

• Ensure engine is cool before removing old glow plugs to prevent damage
• Use the correct 8 mm hex socket for installation and removal
• Check and clean the glow plug seat area for proper sealing
• Torque to manufacturer specifications to avoid thread damage
• Verify electrical connections match the M4 terminal thread and pin terminal type

Quality Assurance and Warranty

NGK glow plugs are manufactured under strict quality control standards to ensure durability and reliable performance. The NGK Glow Plug 9970 is tested for consistent heating and fitment accuracy. Warranty coverage details should be confirmed with the original equipment manufacturer or supplier.