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NGK

NGK IRIDIUM SPARK PLUGS LTR6IX-11 FIT FORD FIESTA ST180 / FOCUS RS MK3 / ST250

NGK IRIDIUM SPARK PLUGS LTR6IX-11 FIT FORD FIESTA ST180 / FOCUS RS MK3 / ST250

£39.50
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OE/OEM Number:

Genuine NGK Iridium IX Spark Plugs
(Heat Grade 6)

Complete Set of 4

NGK PART NUMBER: LTR6IX-11
NGK STOCK CODE: 6509

Applications:

Ford Focus MK3 ST250
Ford Focus RS MK3
Ford Fiesta ST180

Part Number: LTR6IX-11
Product Description: NGK Iridium IX Spark Plug
Marketing Description: 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.
Features and Benefits: SINGLE IRIDIUM TIP: Fine wire 0.6 millimeter iridium tip center electrode
ensures high durability and a consistently stable spark
Features and Benefits: IRIDIUM ALLOY CENTER ELECTRODE: Iridium's density (6x that of platinum)
and extremely high melting point is perfect for modern high efficiency engines
Features and Benefits: TAPERED CUT GROUND ELECTRODE: Reduced quenching design produces
outstanding ignitability, improved acceleration, fuel efficiency and durability
Features and Benefits: SOLID COPPER CORE: 98% pure copper core offers superior heat dissipation,
conductivity and ultra wide heat ranges
Features and Benefits: TRIVALENT METAL PLATING: Delivers superior anti-corrosion and anti-seizing
properties, ensuring ease of installation and removal
Features and Benefits: RECOMMENDED USAGE: Modified or high performance applications, or as an
upgrade to OE nickel alloy spark plugs
Center Electrode Core Material: Copper
Center Electrode Design: Fine Wire
Center Electrode Insulator Tip Projection: 3.5 mm
Center Electrode Insulator Tip Projection: 0.14 in
Center Electrode Projection: Mid Projection
Center Electrode Tip Material: Iridium
Electrical Terminal Type: Non-Removable Nut
Grade Type: Performance
Ground Configuration: J-Gap
Ground Electrode Core Material: Nickel
Ground Electrode Quantity: 1
Ground Electrode Tip Design: Taper Cut
Ground Electrode Tip Material: Nickel
Hex Size: 5/8" (16mm)
Insulator Height: 2.07 in
Insulator Height: 52.5 mm
Insulator Material: Ceramic
Manufacturer Heat Range: 6
Pre-Gap Size: 1.1 mm
Pre-Gap Size: .044 in
Reach: 0.984 in
Reach: 25.0 mm
Resistance: 5000.0 Ohms
Resistor Type: Yes
Seat Type: Tapered
Skirt: No
Skirt Length: 0.0 mm
Skirt Length: 0.0 in
Thread Size: M14 - 1.25
Thread Type Standard: Metric
Washer(s) Included: No

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🚚 UK Mainland – FREE Delivery
We offer free standard shipping to all mainland UK addresses (England, Wales & most of Scotland).

🏴 Offshore, Highlands & Remote Postcodes – Additional Charges Apply
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  • TR21–25 – Isles of Scilly

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👉 If you're located in any of these postcodes, please contact us before purchase for a shipping quote.

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