Mercedes-Benz ML250 Ignition and Tune-Up Products

Carquest premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.

NGK’s patented NHTC (New High Temperature Ceramic) glow plugs were developed for OEM diesel engine manufacturers to comply with ever-stricter emissions standards. Compared to metal glow plugs, NHTC glow plugs have a more robust, fully ceramic heating element which is encased in a ceramic insulator. NGK NHTC glow plugs reach operating temp of 1,000 degrees C in less than 2 seconds and can after-glow for more than 10 minutes at temps of up to 1,350 degrees C. Silicon nitrate ceramic material, combined with optimized shape and joining process provide superior thermal shock and vibration resistance, ensuring stable engine starts. Fine ceramic heater provides durability in high-temperature conditions, improves combustion and reduces emissions.

Product Features:

• ACTUAL OE or EQUIVALENT DESIGN: OEM quality construction ceramic glow plug
• PATENTED TECHNOLOGY: Exclusive NHTC New Ceramic High Temperature design
• NEAR-INSTANT HEATING: Fully ceramic heating element reaches operating temperature in less than two seconds
• CLEAN PERFORMANCE: Constant afterglow temperature minimize noxious pollutants
• RECOMMENDED USAGE: Best for diesel engines with OE ceramic glow plugs

The new ceramic high-temperature glow plug (NHTC glow plug, New High Temperature Ceramic) has a fully ceramic heating element. It reaches an operating temperature of 1000C in two seconds and can afterglow for up to ten minutes at temperatures up to 1350C. That means: It glows in push phases or during the regeneration phase of the particle filter and thereby minimizes the particle emissions during this time. The NHTC ceramic glow plug was specially developed by NGK to enable automobile manufacturers to comply with the Euro 4 and Euro 5 emissions standards. One of the goals of these standards is to reduce the compression ratio in diesel engines. NHTC glow plugs reach a temperature of 1,000C in less than two seconds and can after-glow for more than ten minutes at temperatures of up to 1,350C. Optimal combustion is assured even with low compression ratios. In addition, the NHTC glow plug can glow intermediately to prevent cooling of the particle filter in deceleration phases. Ceramic glow plugs from NGK guarantee a long service life and ensure a reliable and fast ignition, even at the lowest outside temperatures. At the same time, they reduce harmful emissions.