The Bosch FR7SI30 is a premium iridium spark plug engineered for reliable ignition performance, enhanced durability, and long service life compared with conventional spark plugs. It’s designed to meet original equipment (OE) standards, making it suitable as a direct replacement in vehicles where this part number is specified.
Key Features & Benefits:
• Iridium enhanced center electrode: Uses a fine wire, 360° laser welded iridium tip that provides more focused ignition, improved fuel combustion, and significantly longer life than standard plugs.
• Large copper core: Helps improve heat transfer and reduces the risk of pre ignition and fouling, which contributes to consistent performance.
• Nickel plated shell & rolled threads: Protects against corrosion and seizing in aluminum cylinder heads, reducing maintenance hassles.
• Factory preset gap: Eliminates the need for manual gapping before installation in most applications.
• Insulator ribs: Increase surface length to reduce flash over and misfires under a variety of conditions.
• Built in resistor: Helps suppress electrical interference with vehicle electronics.
Typical Applications:
• Used as an OE grade replacement spark plug in many petrol engines — for example, Mitsubishi Mirage / Mirage G4 1.2 L models, among others.
Performance Highlights:
• Delivers stable combustion and improved ignitability over extended service intervals due to the durable iridium tip.
• Designed to provide consistent engine performance, smoother idle, and reduced fuel consumption compared to copper plug designs.
