NGK 93593 Spark Plug
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NGK
 Laser Iridium High Ignitability Spark Plug

NGK 93593 Spark Plug

Brand NGK 93593
Resistance 5000
Ground Electrode Tip Design Square platinum electrode - high ignitability
Ground Configuration Standard
Ground Electrode Core Material Copper
Electrical Terminal Type Non-removable nut
Center Electrode Core Material Copper
Center Electrode Tip Material Iridium
Pre-Gap Size .028
Ground Electrode Quantity 1
Hex Size 14
Insulator Height 52.50
Manufacturer Heat Range 8
Seat Type Tapered
Reach 25.00
Thread Diameter 12.00
Part Number Silznar8c7h
Stock Number 93593
Product line Laser Iridium High Ignitability Spark Plug
Fits Ford · 12 vehicles

Laser iridium design. Delivers precise ignition and dependable performance.

High ignitability tip. Promotes efficient spark delivery for responsive operation.

OE supplier heritage. Built by NGK, a long-time original equipment manufacturer.

Cross-references NGK 93593, CM5G-12405-CE and CM5G 12405 CE for the same application. See all 4.

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NGK Laser Iridium Spark Plug 93593

NGK 93593 is a Laser Iridium High Ignitability spark plug built for precise ignition performance and OE-style service intervals. It uses an iridium center electrode tip, a square platinum ground electrode tip design, and a 0.028 in. pre-gap to support consistent spark delivery in modern Ford engines.

Compatible With 2014-2021 Ford Fiesta, 2015-2020 Ford Focus, and 2018-2021 Ford EcoSport applications that call for a high ignitability spark plug. The NGK Laser Iridium line is positioned for OE replacement use where factory-style fit, heat range, and ignition characteristics matter.

Key Features

  • Laser Iridium High Ignitability spark plug for OE-style ignition performance
  • Iridium center electrode tip for durable spark delivery
  • Square platinum ground electrode tip design for high ignitability
  • 0.028 in. pre-gap for listed Ford applications
  • 5000 ohm resistance
  • Tapered seat design with 12 mm thread diameter and 14 mm hex size
  • Manufacturer heat range 8
  • Copper core center and ground electrodes

Detailed Description

NGK 93593 is engineered as a Laser Iridium High Ignitability spark plug for vehicles that require a high-ignitability OE-equivalent design. The iridium center electrode tip and square platinum ground electrode tip design support stable ignition characteristics, while the tapered seat and specified 0.028 in. gap align with the listed factory applications. This part number, 93593, is referenced for Ford Fiesta, Ford Focus, and Ford EcoSport models where the OE spark plug specification calls for high ignitability.

NGK is a long-established OE supplier in North America with broad coverage across automotive applications, and this spark plug reflects that OE-focused approach. If you are servicing a Ford Fiesta, Ford Focus, or Ford EcoSport and need NGK 93593 for the specified engine application, this plug matches the listed fitment and service interval requirements.

This part cross-references Ford CM5G-12405-CE and CM5Z-12405-A for the same application.

Common Issues This Part Can Address

  • Rough idle caused by worn spark plug electrodes
  • Hard starting from weakened ignition output
  • Misfire conditions related to plug wear or incorrect gap
  • Reduced throttle response from inconsistent spark delivery
  • Service interval replacement for OE-specified high ignitability plugs

Installation Notes and Tips

  • Verify engine application and OE spark plug specification before installation.
  • Confirm the 0.028 in. gap matches the vehicle requirement before use.
  • Use the correct torque procedure for the tapered seat design.
  • Inspect ignition coils and related secondary ignition components during service.
  • Replace plugs according to the manufacturer service interval for the vehicle.

Quality Assurance

NGK manufactures spark plugs for domestic and import vehicles and supplies OE-level ignition components across a wide range of applications. Part number 93593 is built to the listed specifications for the confirmed Ford fitments and follows NGK’s OE-focused manufacturing standards.

Related reading

This part fits 12 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2021FordEcoSport1.0LL3N/A60,000 mi (Severe) / 100,000 mi (Normal) Factory Recommended Service Interval; Laser Iridium High Ignitability Spark Plug
2020FordEcoSport1.0LL3N/AOE Spark Plug Is High Ignitability. For Optimal Performance, Replace With High Ignitability Spark Plugs.; Gap 0.028"; OE Equivalent Design*; 100,000 mi OE Mfr Recommended Service Interval; Laser Iridium High Ignitability Spark Plug
2019FordEcoSport1.0LL3N/AOE Spark Plug Is High Ignitability. For Optimal Performance, Replace With High Ignitability Spark Plugs.; Gap 0.028"; OE Equivalent Design*; 100,000 mi OE Mfr Recommended Service Interval; Laser Iridium High Ignitability Spark Plug
2018FordEcoSport1.0LL3N/AOE Spark Plug Is High Ignitability. For Optimal Performance, Replace With High Ignitability Spark Plugs.; Gap 0.028"; OE Equivalent Design*; 100,000 mi OE Mfr Recommended Service Interval; Laser Iridium High Ignitability Spark Plug
2018FordFocus1.0LL3N/AOE Spark Plug Is High Ignitability. For Optimal Performance, Replace With High Ignitability Spark Plugs.; Gap 0.028"; OE Equivalent Design*; 100,000 mi OE Mfr Recommended Service Interval; Laser Iridium High Ignitability Spark Plug
2017FordFiesta1.0LL3N/AOE Spark Plug Is High Ignitability. For Optimal Performance, Replace With High Ignitability Spark Plugs.; Gap 0.028"; OE Equivalent Design*; 100,000 mi OE Mfr Recommended Service Interval; Laser Iridium High Ignitability Spark Plug
2017FordFocus1.0LL3N/AOE Spark Plug Is High Ignitability. For Optimal Performance, Replace With High Ignitability Spark Plugs.; Gap 0.028"; OE Equivalent Design*; 100,000 mi OE Mfr Recommended Service Interval; Laser Iridium High Ignitability Spark Plug
2016FordFiesta1.0LL3N/AOE Spark Plug Is High Ignitability. For Optimal Performance, Replace With High Ignitability Spark Plugs.; Gap 0.028"; OE Equivalent Design*; 100,000 mi OE Mfr Recommended Service Interval; Laser Iridium High Ignitability Spark Plug
2016FordFocus1.0LL3N/AOE Spark Plug Is High Ignitability. For Optimal Performance, Replace With High Ignitability Spark Plugs.; Gap 0.028"; OE Equivalent Design*; 100,000 mi OE Mfr Recommended Service Interval; Laser Iridium High Ignitability Spark Plug
2015FordFiesta1.0LL3N/AOE Spark Plug Is High Ignitability. For Optimal Performance, Replace With High Ignitability Spark Plugs.; Gap 0.028"; OE Equivalent Design*; 100,000 mi OE Mfr Recommended Service Interval; Laser Iridium High Ignitability Spark Plug
2015FordFocus1.0LL3N/AOE Spark Plug Is High Ignitability. For Optimal Performance, Replace With High Ignitability Spark Plugs.; Gap 0.028"; OE Equivalent Design*; 100,000 mi OE Mfr Recommended Service Interval; Laser Iridium High Ignitability Spark Plug
2014FordFiesta1.0LL3N/AOE Spark Plug Is High Ignitability. For Optimal Performance, Replace With High Ignitability Spark Plugs.; Gap 0.028"; OE Equivalent Design*; 100,000 mi OE Mfr Recommended Service Interval; Laser Iridium High Ignitability Spark Plug
Directly replaces or cross-references 4 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
NGK — 93593CM5G-12405-CECM5G 12405 CECM5Z-12405-A