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NGK R5 spark plugs

R5 NGK – Properties, Compatibility and Alternatives

The NGK R5 spark plug represents a fundamental component in internal combustion engines, designed to provide reliable ignition for fuel-air mixtures. This Spark plug NGK R5 serves as a critical element in engine operation, delivering consistent performance across various automotive applications. The R5 model incorporates NGK's proven technology to ensure optimal combustion efficiency and engine reliability.

Advantages of the R5 NGK

  • Superior heat dissipation capabilities ensure consistent performance under varying operating conditions
  • Robust construction with Spark plug R5 NGK technology provides extended service life and durability
  • Precise electrode design delivers reliable ignition timing and improved fuel efficiency
  • Corrosion-resistant materials maintain optimal performance with NGK R5 spark plug characteristics
  • Wide temperature range compatibility ensures reliable operation in diverse climatic conditions
  • Proven NGK manufacturing standards guarantee consistent quality and performance reliability

Technical Data

Feature Value
Manufacturer NGK
Model NGK R5 spark plugs
Type Standard copper core
Thread size 14mm
Thread length 12.7mm (1/2 inch)
Wrench size 20.8mm (13/16 inch)
Heat range 5 (medium)
Electrode gap 0.6mm (0.024 inch)
Resistance Non-resistor type
Application Classic vehicles, motorcycles, small engines

Compatibility and Areas of Application

The NGK R5 spark plug demonstrates exceptional versatility across multiple engine applications. This R5 NGK spark plug component proves particularly suitable for classic automotive engines, vintage motorcycles, and various small engine applications. The medium heat range designation makes it ideal for standard operating conditions without extreme performance demands.

  • Classic and vintage automobile engines with standard compression ratios
  • Motorcycle engines requiring reliable ignition performance
  • Small engine applications including generators and lawn equipment
  • Marine engines operating under moderate conditions
  • Industrial equipment requiring dependable ignition systems

Suitable for the following vehicle models and equivalents

It is important to mention that alternative products can be found on AUTODOC. Currently, there are over 7000 items available in the spark plugs category.

Car maker Car Model
Volkswagen Beetle (classic models)
BMW 2002 series (vintage)
Mercedes-Benz W123 series
Porsche 911 (early models)
Honda Civic (first generation)

Application Notes and Important Questions

  • What maintenance interval should be followed for R5 NGK replacement in classic vehicles? Generally, replacement every 10,000-15,000 miles ensures optimal performance.
  • How does electrode gap affect engine performance with Spark plug NGK R5 installations? Proper gap setting ensures efficient combustion and prevents misfiring issues.
  • Can this spark plug handle modified engines with increased compression ratios? Standard heat range may require evaluation for high-performance applications.
  • What symptoms indicate spark plug replacement necessity? Engine misfiring, rough idling, and reduced fuel efficiency typically signal replacement needs.
  • Are there specific torque specifications for installation? Following manufacturer torque specifications prevents thread damage and ensures proper heat transfer.

Conclusion

The NGK R5 spark plugs deliver reliable ignition performance for classic vehicles and standard engine applications. This proven NGK R5 spark plugs solution combines NGK's manufacturing expertise with practical design elements suitable for various automotive and small engine requirements. Proper installation and maintenance ensure optimal engine performance and longevity.

500 items
  • Product line: V-Line
  • Spark Plug: Nickel Middle Electrode, 1 - Earthed Electrode, Interference Suppression 5 kOhm, with gasket seat, Fixed SAE connector
  • Spanner Size: 20,8 mm
  • Thread Length [mm]: 19,0
  • Spark Position [mm]: 4,0
  • Thread Size: M14 x 1,25
  • Item number: 3577
  • Manufacturer: NGK
  • EAN number: 0087295135778
  • Condition: New
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NGK 4028 Spark plug M14 x 1,25, Spanner Size: 20,8 mm
Article number: 4028
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  • Spark Plug: Connector Type SAE, Nickel Middle Electrode, 1 - Earthed Electrode, no interference suppression, with gasket seat
  • Spanner Size: 20,8 mm
  • Thread Length [mm]: 19,0
  • Spark Position [mm]: 4,0
  • Thread Size: M14 x 1,25
  • Item number: 4028
  • Manufacturer: NGK
  • EAN number: 0087295140284
  • Condition: New
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NGK 5950 Spark plug M14 x 1,25, Spanner Size: 16 mm
Article number: 5950
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  • Spark Plug: Nickel Middle Electrode, 1 - Earthed Electrode, no interference suppression, with taper gasket seat, Fixed SAE connector
  • Spanner Size: 16 mm
  • Thread Length [mm]: 7,8
  • Spark Position [mm]: 3,0
  • Thread Size: M14 x 1,25
  • Item number: 5950
  • Manufacturer: NGK
  • EAN number: 0087295159507
  • Condition: New
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NGK 2642 Spark plug M14 x 1,25, Spanner Size: 20,8 mm
Article number: 2642
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  • Spark Plug: Nickel Middle Electrode, 1 - Earthed Electrode, Interference Suppression 5 kOhm, with gasket seat, Fixed SAE connector
  • Spanner Size: 20,8 mm
  • Thread Length [mm]: 19,0
  • Spark Position [mm]: 3,0
  • Thread Size: M14 x 1,25
  • Item number: 2642
  • Manufacturer: NGK
  • EAN number: 0087295126424
  • Condition: New
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NGK 7311 Spark plug M14 x 1,25, Spanner Size: 20,8 mm
Article number: 7311
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  • Spark Plug: Nickel Middle Electrode, 1 - Earthed Electrode, no interference suppression, with gasket seat, Fixed SAE connector
  • Spanner Size: 20,8 mm
  • Thread Length [mm]: 19,0
  • Spark Position [mm]: 3,0
  • Thread Size: M14 x 1,25
  • Item number: 7311
  • Manufacturer: NGK
  • EAN number: 0087295173114
  • Condition: New
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NGK 6429 Spark plug M14 x 1,25, Spanner Size: 20,8 mm
Article number: 6429
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  • Spark Plug: Nickel Middle Electrode, 1 - Earthed Electrode, Interference Suppression 5 kOhm, with gasket seat, Fixed SAE connector
  • Spanner Size: 20,8 mm
  • Thread Length [mm]: 19,0
  • Spark Position [mm]: 9,5
  • Thread Size: M14 x 1,25
  • Item number: 6429
  • Manufacturer: NGK
  • EAN number: 0087295164297
  • Condition: New
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NGK 3725 Spark plug M14 x 1,25, Spanner Size: 20,8 mm
Article number: 3725
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  • Spark Plug: Unscrewable SAE connector, Nickel Middle Electrode, 1 - Earthed Electrode, Interference Suppression 5 kOhm, with gasket seat
  • Spanner Size: 20,8 mm
  • Thread Length [mm]: 12,7
  • Spark Position [mm]: 3,5
  • Thread Size: M14 x 1,25
  • Item number: 3725
  • Manufacturer: NGK
  • EAN number: 087295137253
  • Condition: New
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NGK 7023 Spark plug M10 x 1,0, Spanner Size: 16 mm
Article number: 7023
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  • Spark Plug: Connector Type M4, Nickel Middle Electrode, 1 - Earthed Electrode, Interference Suppression 5 kOhm, with gasket seat
  • Spanner Size: 16 mm
  • Thread Length [mm]: 12,7
  • Spark Position [mm]: 1,5
  • Thread Size: M10 x 1,0
  • Item number: 7023
  • Manufacturer: NGK
  • EAN number: 0087295170236
  • Condition: New
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NGK 7926 Spark plug M14 x 1,25, Spanner Size: 20,8 mm
Article number: 7926
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  • Spark Plug: Unscrewable SAE connector, Nickel Middle Electrode, 1 - Earthed Electrode, no interference suppression, with gasket seat
  • Spanner Size: 20,8 mm
  • Thread Length [mm]: 12,7
  • Spark Position [mm]: 4,5
  • Thread Size: M14 x 1,25
  • Item number: 7926
  • Manufacturer: NGK
  • EAN number: 0087295179260
  • Condition: New
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NGK 1270 Spark plug M14 x 1,25, Spanner Size: 16 mm
Article number: 1270
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  • Spark Plug: Unscrewable SAE connector, Nickel Middle Electrode, 1 - Earthed Electrode, Interference Suppression 5 kOhm, with taper gasket seat
  • Spanner Size: 16 mm
  • Thread Length [mm]: 7,8
  • Spark Position [mm]: 3,0
  • Thread Size: M14 x 1,25
  • Item number: 1270
  • Manufacturer: NGK
  • EAN number: 0087295112700
  • Condition: New
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NGK 5423 Spark plug M12 x 1,25, Spanner Size: 18 mm
Article number: 5423
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  • Spark Plug: Connector Type M4, Nickel Middle Electrode, 1 - Earthed Electrode, Interference Suppression 5 kOhm, with gasket seat
  • Spanner Size: 18 mm
  • Thread Length [mm]: 19,0
  • Spark Position [mm]: 1,6
  • Thread Size: M12 x 1,25
  • Item number: 5423
  • Manufacturer: NGK
  • EAN number: 0087295154236
  • Condition: New
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NGK 4632 Spark plug M14 x 1,25, Spanner Size: 20,8 mm
Article number: 4632
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  • Spark Plug: Connector Type M4, Nickel Middle Electrode, 1 - Earthed Electrode, Interference Suppression 5 kOhm, with gasket seat
  • Spanner Size: 20,8 mm
  • Thread Length [mm]: 12,7
  • Spark Position [mm]: 3,5
  • Thread Size: M14 x 1,25
  • Item number: 4632
  • Manufacturer: NGK
  • EAN number: 0087295146323
  • Condition: New
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  • Product line: V-Line
  • Spark Plug: Unscrewable SAE connector, Nickel Middle Electrode, 1 - Earthed Electrode, no interference suppression, with gasket seat
  • Spanner Size: 20,8 mm
  • Thread Length [mm]: 19,0
  • Spark Position [mm]: 3,0
  • Thread Size: M14 x 1,25
  • Item number: 5637
  • Manufacturer: NGK
  • EAN number: 0087295156377
  • Condition: New
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  • Spark Plug: Unscrewable SAE connector, Nickel Middle Electrode, 1 - Earthed Electrode, no interference suppression, with gasket seat
  • Spanner Size: 20,8 mm
  • Thread Length [mm]: 19,0
  • Spark Position [mm]: 3,0
  • Thread Size: M14 x 1,25
  • Item number: 7811
  • Manufacturer: NGK
  • EAN number: 0087295178119
  • Condition: New
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  • Spark Plug: Unscrewable SAE connector, Nickel Middle Electrode, 1 - Earthed Electrode, no interference suppression, with gasket seat
  • Spanner Size: 20,8 mm
  • Thread Length [mm]: 12,7
  • Spark Position [mm]: 3,5
  • Thread Size: M14 x 1,25
  • Item number: 4511
  • Manufacturer: NGK
  • EAN number: 0087295145111
  • Condition: New
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  • Spark Plug: Unscrewable SAE connector, Nickel Middle Electrode, 1 - Earthed Electrode, no interference suppression, with gasket seat
  • Spanner Size: 20,8 mm
  • Supplementary Info: BLISTER
  • Thread Length [mm]: 12,7
  • Spark Position [mm]: 3,5
  • Thread Size: M14 x 1,25
  • Item number: 92010
  • Manufacturer: NGK
  • EAN number: 0087295820100
  • Condition: New
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  • Spark Plug: Unscrewable SAE connector, Nickel Middle Electrode, 1 - Earthed Electrode, no interference suppression, with gasket seat
  • Spanner Size: 20,8 mm
  • Thread Length [mm]: 9,5
  • Spark Position [mm]: 1,0
  • Thread Size: M14 x 1,25
  • Item number: 3410
  • Manufacturer: NGK
  • EAN number: 0087295134108
  • Condition: New
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-24%
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  • Spark Plug: Unscrewable SAE connector, Nickel Middle Electrode, 1 - Earthed Electrode, no interference suppression, with gasket seat
  • Spanner Size: 20,8 mm
  • Supplementary Info: Quick
  • Thread Length [mm]: 9,5
  • Spark Position [mm]: 1,0
  • Thread Size: M14 x 1,25
  • Item number: 1228
  • Manufacturer: NGK
  • EAN number: 087295012284
  • Condition: New
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  • Spark Plug: Nickel Middle Electrode, 1 - Earthed Electrode, no interference suppression, with gasket seat, Fixed SAE connector
  • Spanner Size: 20,8 mm
  • Thread Length [mm]: 19,0
  • Spark Position [mm]: 3,0
  • Thread Size: M14 x 1,25
  • Item number: 7529
  • Manufacturer: NGK
  • EAN number: 0087295175293
  • Condition: New
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In stock
-6%
compared to RRP £3.50

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  • Product line: V-Line
  • Spark Plug: Unscrewable SAE connector, Nickel Middle Electrode, 1 - Earthed Electrode, no interference suppression, with gasket seat
  • Spanner Size: 20,8 mm
  • Thread Length [mm]: 12,7
  • Spark Position [mm]: 3,5
  • Thread Size: M14 x 1,25
  • Item number: 3975
  • Manufacturer: NGK
  • EAN number: 0087295139752
  • Condition: New
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