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NGK 7243 TR5-1IX Iridium IX Spark Plug, 14mm Thread, Heat Range 5

(Ford F-150 2003, 2005-07, Mustang 1983-90, 2005, Ranger 1983-88, Thunderbird 1984, Explorer Sport Trac 2005, E-150 2003, E-250 2003 + 20 more models)

Manufacturer

Picture for manufacturer NGK Spark Plugs

Part Number

7243
4 reviews
Sale Price

$7.92

In Stock (10+)

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Usually delivered within 2 days

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Product Details

The NGK 7243 Iridium IX spark plug (manufacturer part number TR5-1IX) is a fine-wire iridium performance plug. It is built for drivers who want sharper acceleration, good fuel efficiency and long service life. NGK is a major OE spark plug supplier, and this plug carries that quality into the aftermarket for car and truck engines.

Key Features:

  • Fine-wire iridium center electrode, about six times harder than platinum, with a very high melting point for durability in modern engines
  • Tapered-cut ground electrode for improved starting, idling and throttle response
  • Strong ignitability and good anti-fouling performance
  • Trivalent metal plating for anti-corrosion and anti-seizing protection
  • Copper-cored center electrode and ceramic insulator
  • Built-in resistor (5,000 ohms) to help suppress radio interference

Specifications:

  • Part number: NGK 7243 (TR5-1IX)
  • Center electrode tip: iridium
  • Ground electrode: single, J-gap, taper cut
  • Heat range: 5
  • Thread size: M14 x 1.25
  • Reach: 17.5 mm
  • Hex size: 5/8 in. (16 mm)
  • Pre-set gap: 1.0 mm (.040 in.)
  • Seat type: tapered
  • Terminal: non-removable nut
  • Insulator: projected-tip ceramic

NGK Iridium IX plugs suit both replacement and performance-upgrade use. They fit easily with standard spark plug tools. Check the gap against your engine's specification before installing.

Products specifications

Fits

Ford F-150 2003, 2005-07, Mustang 1983-90, 2005, Ranger 1983-88, Thunderbird 1984, Explorer Sport Trac 2005, E-150 2003, E-250 2003, LTD 1983-86, Escort 1983-90, F-150 Heritage 2004, Aerostar 1986-87, Tempo 1984-90, Fairmont 1983 + 14 more models

Stock Number

7243

Part Number

TR5-1IX

Seat Type

Tapered

Electrical Terminal Type

Non-Removable Nut

Ground Electrode Core Material

Nickel

Manufacturer Heat Range

5

Ground Electrode Quantity

1

Center Electrode Tip Material

Iridium

Insulator Height

53.00

Hex Size

5/8

Ground Configuration

Standard

Pre-Gap Size

.040

Center Electrode Core Material

Copper

Reach

.708

Thread Diameter

14.00

Resistance

5000

Ground Electrode Tip Design

Taper Cut

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