BPR7HIX NGK Iridium Spark Plug | Genuine NGK Spark Plug

🔧 Product Description

NGK Iridium Spark Plug – Part Number: BPR7HIX

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: 5944
• Thread: 14 mm
• Reach: 12.7 mm (1/2 in)
• Hex: 20.8 mm (13/16 in)
• Seat: Gasket
• Type: Projected

🚘 Application

Listed in NGK's application charts for marine, motorcycle, ATV and snowmobile equipment and automotive vehicles. 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.

• Marine Drive Systems 85 – Inboard Engine
• Marine Drive Systems 110 – Inboard Engine
• Volvo-Penta BB115A – Inboard Engine
• Volvo-Penta BB115B – Inboard Engine
• Volvo-Penta BB115C – Inboard Engine
• Volvo-Penta BB165A – Inboard Engine
• Volvo-Penta BB170A – Inboard Engine
• Volvo-Penta BB170B – Inboard Engine
• Volvo-Penta AQ105A, 110, 115A, 120 – Inboard Engine
• Volvo-Penta AQ130, A, B, C, D – Inboard Engine
• Volvo-Penta AQ165A – Inboard Engine
• Volvo-Penta AQ170, A, B, C – Inboard Engine
• Force (U.S. Marine) (25 HP, 1999-1996) – Outboard Engine
• Force (U.S. Marine) (15 HP, 1999-1984) – Outboard Engine
• Johnson (275 HP, 1988-1985) – Outboard Engine
• Johnson JET (40 HP, 2001-1999) – Outboard Engine
• Johnson JET (30 HP, 2001-1999) – Outboard Engine
• Johnson (3.5 HP, 2005-2004) – Outboard Engine
• Mercury 4 (4 HP, 1982-1980) – Outboard Engine
• Tanaka TOB 550 (5.5 HP, 1988-1984) – Outboard Engine
• Tanaka TOB 550L (5.5 HP, 1988-1984) – Outboard Engine
• Volvo-Penta 252 (1974-1973) – Outboard Engine
• Aprilia QUASAR 100 (100, 2004-2003) – Motorcycle
• Aprilia MOJITO CUSTOM 50 2T - APRILIA (50, 2004-1999) – Motorcycle
• Aprilia MOJITO RETRO 50 2T - APRILIA (50, 2003-1999) – Motorcycle

That is the 25 most common of 156 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: 4205, W22FPR-ZU
• Bosch: W5BP
• Torch: E7RTP

📦 Condition

• Brand new genuine product
• Supplied in original packaging