NGK 92725 Spark Plug

Reliable Ignition Performance for Infiniti and Mercedes-Benz Vehicles

The NGK Laser Iridium High Ignitability Spark Plug, part number Silzkfr8h7s (stock number 92725), is engineered to deliver consistent ignition performance for select Infiniti and Mercedes-Benz models. Designed to meet the specific ignition requirements of vehicles like the Infiniti Q50 and Mercedes-Benz C300, this spark plug supports efficient combustion and engine responsiveness.

• Part Number: Silzkfr8h7s (Stock Number 92725)
• Brand: NGK
• Brand Line: Laser Iridium High Ignitability Spark Plug
• Compatible with Infiniti and Mercedes-Benz models including Q50, Q60, B250, C300, C350e, CLA250, E300, GLA250, GLC300, GLC350e, Metris, QX30, SLC300, SLK300, Sprinter 1500, and Sprinter 2500
• Category: Ignition > Secondary Ignition
• Part Type: Spark Plug

About the NGK Laser Iridium High Ignitability Spark Plug Line

The Laser Iridium High Ignitability Spark Plug line from NGK is designed to provide enhanced ignition efficiency through the use of iridium, a durable and conductive material. This technology supports improved spark performance and longevity compared to conventional spark plugs. The high ignitability feature ensures reliable combustion, which is critical for maintaining engine performance and fuel efficiency in vehicles such as the Mercedes-Benz GLC350e and Infiniti Q60.

Product Details and Compatibility

This NGK spark plug, part number Silzkfr8h7s, is specifically designed for secondary ignition systems in a range of Infiniti and Mercedes-Benz vehicles. It is compatible with models including the Infiniti Q50, Q60, and QX30, as well as Mercedes-Benz models like the C300, C350e, CLA250, E300, GLA250, GLC300, GLC350e, Metris, SLC300, SLK300, and Sprinter 1500/2500. The precise fitment ensures optimal ignition timing and combustion efficiency, contributing to smoother engine operation and reduced emissions.

Common Applications and Issues Addressed

• Restores consistent ignition spark in Infiniti Q50 and Mercedes-Benz C300 engines
• Improves engine start-up reliability in models such as the GLC350e and CLA250
• Helps reduce misfires and rough idling in vehicles like the Sprinter 1500 and Metris
• Supports fuel efficiency and performance in Infiniti Q60 and Mercedes-Benz E300
• Addresses ignition-related drivability issues in SLK300 and SLC300 models

Installation Notes and Tips

When installing the NGK Laser Iridium High Ignitability Spark Plug (part number Silzkfr8h7s), ensure the engine is cool to prevent damage to the cylinder head. Use a torque wrench to tighten the spark plug to the manufacturer’s recommended specifications to avoid over-tightening or under-tightening. It is advisable to inspect the ignition coil and wiring for wear or damage during replacement to maintain optimal ignition system performance.

Quality Assurance and Warranty

NGK is a recognized manufacturer of ignition components with stringent quality control standards. The Laser Iridium High Ignitability Spark Plug undergoes rigorous testing to meet OEM specifications for durability and performance. While specific warranty details are not provided here, NGK products typically come with manufacturer-backed warranties to ensure reliability and customer confidence.