BPR5EIX NGK Iridium Spark Plug | Genuine NGK Spark Plug

🔧 Product Description

NGK Iridium Spark Plug – Part Number: BPR5EIX

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: 6597
• Thread: 14 mm
• Reach: 19 mm (3/4 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.

• Bmw B130 – Inboard Engine
• Bmw B130S – Inboard Engine
• Bmw B190 – Inboard Engine
• Bmw B1901 – Inboard Engine
• Bmw B190S – Inboard Engine
• Bmw B220 – Inboard Engine
• Bmw B2201 – Inboard Engine
• Bmw B220S – Inboard Engine
• Bmw G1301 – Inboard Engine
• Bmw G130S – Inboard Engine
• Bmw G1901 – Inboard Engine
• Bmw G190S – Inboard Engine
• Bmw G2201 – Inboard Engine
• Bmw G220S – Inboard Engine
• Honda BF50F (50 HP) – Outboard Engine
• Honda BF50 (5 HP) – Outboard Engine
• Honda BF5A (5 HP) – Outboard Engine
• Alpha ALL MODELS – Motorcycle
• Aprilia TL 320 (320, 1986) – Motorcycle
• Aprilia CLIMBER (276, 1998-1989) – Motorcycle
• Aprilia TX300 (276, 1984) – Motorcycle
• Aprilia TX311 M (276, 1984) – Motorcycle
• Aprilia TXR312 M (276, 1986) – Motorcycle
• Bultaco ALPINA 166 (350) – Motorcycle
• Bultaco ALPINA 188 (350) – Motorcycle

That is the 25 most common of 276 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: 3030, 3231, 4018, 4709, 5305, IW16, IW20TT, W16EP-ZU and 2 more
• Bosch: 4218, 4220, 4507, W9DP, WGR9DQI, WR8DP, WR8DS, WR9DP and 1 more
• Autolite: XS65, XS65DP
• ACDelco: 4
• Beck Arnley: 1765283
• Champion: RN12GY
• Torch: F5RTP

📦 Condition

• Brand new genuine product
• Supplied in original packaging