CR7HIX NGK Iridium Spark Plug | Genuine NGK Spark Plug

🔧 Product Description

NGK Iridium Spark Plug – Part Number: CR7HIX

Iridium NGK spark plugs offer a longer service life than a standard nickel-tipped spark plug: while nickel-alloy plugs offer a service life of roughly 20,000-40,000km, NGK Iridium IX spark plugs offer a service life of up to 60,000km, so fewer replacements are needed over time despite the higher initial cost.

Precious-metal spark plugs like the NGK Iridium IX also offer higher ignitability, achieved with an exposed fine-tip centre electrode that promotes superior flame growth compared with a standard spark plug. Iridium has a much higher melting point (2410°C) than nickel (1453°C), allowing the centre electrode diameter to be reduced from 2.5mm to 0.6mm – a smaller electrode mass that reduces the impedance to flame progress, helping acceleration, fuel consumption and idle quality.

⚙️ Key Features

• Fine iridium-tipped centre electrode for a slow wear rate and stable idle
• Longer service life than standard nickel plugs
• Trivalent metal plating provides superior anti-corrosion and anti-seizing properties
• Corrugated ribs reduce the risk of flashover
• Pure alumina silicate ceramic insulator, providing superior strength and better heat transfer
• Copper core aids in heat removal
• Triple seals prevent leakage

📏 Specifications

• NGK stock number: 7544
• Thread: 10 mm
• Reach: 12.7 mm (1/2 in)
• Hex: 16 mm (5/8 in)
• Seat: Gasket
• Terminal: Threaded stud

🚘 Application

Listed in NGK's application charts for marine, motorcycle, ATV and snowmobile equipment. The gap is not the same on all of them – the chart lists between 0.5 mm and 1.0 mm depending on the engine, so check the line for yours.

• Aprilia QUASAR 180 (180, 2004) – Motorcycle
• Aprilia QUASAR 125 (125, 2004) – Motorcycle
• Baja PX250 (250) – Motorcycle
• Baja SC150 (150) – Motorcycle
• Baja SC125 (125) – Motorcycle
• Baja DR90 (90) – Motorcycle
• Baja DR70 (70) – Motorcycle
• Baja DR50 (50) – Motorcycle
• Baja RT50 (50) – Motorcycle
• Baja SC50 (50) – Motorcycle
• Baja SC50S (50) – Motorcycle
• Baja DR49 (49) – Motorcycle
• Beta ALP 125 (125, 2011-2008) – Motorcycle
• Beta RR 125 4T (125, 2011-2008) – Motorcycle
• Beta RR ENDURO 4T 125 (125, 2011-2008) – Motorcycle
• Beta URBAN 125 (125, 2011-2008) – Motorcycle
• Dazon ARIES 125 (125) – Motorcycle
• Dazon SCORPION 125 (125) – Motorcycle
• Dazon SICILIAN 125 (125) – Motorcycle
• Dazon WILDCAT 125 (125) – Motorcycle
• Dazon DIAMONDBACK 50 (50) – Motorcycle
• Dazon SICILIAN 50 (50) – Motorcycle
• Diamo FURY 150 (150) – Motorcycle
• Diamo RETRO 150 (150) – Motorcycle
• Diamo TRACER 150 (150) – Motorcycle

That is the 25 most common of 300 applications NGK's charts list for this plug – ask us to check yours.

🔄 Supersession & Cross Reference

NGK's cross-reference tables list this plug against these part numbers.

• DENSO: 4003, 4007, 5383, 7544, IUF22, U20FSZU, U22FS-ZU

📦 Condition

• Brand new genuine product
• Supplied in original packaging