NGK 4344 Iridium IX Spark Plug
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NGK Iridium IX spark plugs are specifically designed for the performance enthusiast. Iridium IX provides outstanding acceleration, high fuel efficiency and durability. NGK Iridium IX plugs offer extreme ignitability and exceptional anti-fouling. Tapered cut ground electrode provides improved starting, idling and throttle response. The Iridium fine wire center electrode's durability is six times harder than platinum. Iridium alloy's extremely high melting point is perfect for today's engines. For even greater performance consider upgrading to an NGK Ruthenium HX plug.
- SINGLE IRIDIUM TIP: Fine wire 0.6 millimeter iridium tip center electrode ensures high durability and a consistently stable spark
- IRIDIUM ALLOY CENTER ELECTRODE: Iridium's density (6x that of platinum) and extremely high melting point is perfect for modern high efficiency engines
- TAPERED CUT GROUND ELECTRODE: Reduced quenching design produces outstanding ignitability, improved acceleration, fuel efficiency and durability
- SOLID COPPER CORE: 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges
- TRIVALENT METAL PLATING: Delivers superior anti-corrosion and anti-seizing properties, ensuring ease of installation and removal
- RECOMMENDED USAGE: Modified or high performance applications, or as an upgrade to OE nickel alloy spark plugs
Specifications
| Metallurgy | Single Iridium |
| Service Number | LTR5IX-11 |
| Part Number | LTR5IX-11 |
| Stock Number | 4344 |
| Short Style Spark Plug | No |
| Dimension | 5000.0 82 |
| Tip Configuration | Taper Cut |
| Gap Style | J-Gap |
| Thread Standard | Metric |
| Ground Electrode Core Material | Nickel |
| Grade Type | Performance |
| Terminal Type | Non-Removable Nut |
| Center Electrode Core Material | Copper |
| Center Electrode Material | Iridium |
| Spark Plug Gap | .044 IN |
| Ground Electrode Quantity | 1 |
| Hex Size | 5/8" (16mm) |
| Length | 2.07 IN |
| Heat Range | 5 |
| Seat Type | Tapered |
| Reach | 0.984 IN |
| Material | Ceramic |
| Thread Size | M14 - 1.25 |
| Ground Electrode Material | Nickel |
| Resistor | No |
| Insulator Nose Projection | 0.14 IN |
| Electrode Style | Fine Wire |
| Projection | Mid Projection |
| Country of Origin | Thailand |
Warranty: 2 Months
Please check the product description for the manufacturer’s application details, or ask a specialist — we’ll confirm whether it fits your vehicle before you buy.
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Shipping: Free to the USA.
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