spark plugs for honda engines

Honda Engines Spark Plug Gap & Socket Size Guide

Are you looking for a new spark plug for your Honda engine but have no idea how to choose one? I have great news for you! Our team here at Generatorist has helped over 600,000 visitors find information about generators & engines and we will help you as well.

Data for this page is based on official manuals from Honda. We will show you the type of spark plug for specific models of Honda engines, the gap size, alternatives, cross reference charts and links to manuals. We also provide references where you can verify this info for yourself.

Just click on your model to see the specifications and have a 5/8″ (16mm) or 13/16″ (21mm) socket & ratchet at hand.

Honda Engines

Spark plug (info from the User’s Manual)

  • TypeBPR6ES (NGK) or equivalent
  • Gap – 0.028″– 0.031″
  • Socket size – 13/16″ (21mm)

Alternatives https://www.sparkplug-crossreference.com/convert/NGK_PN/BPR6ES

Owner´s manualhttps://cdn.powerequipment.honda.com

Official product pagehttps://engines.honda.com/models/model-detail/gc-horizontal

Spark plug (info from the User’s Manual)

  • TypeBPR6ES (NGK) or equivalent
  • Gap – 0.028″– 0.031″
  • Socket size – 13/16″ (21mm)

Alternatives https://www.sparkplug-crossreference.com/convert/NGK_PN/BPR6ES

Owner´s manualhttps://cdn.powerequipment.honda.com

Official product pagehttps://engines.honda.com/models/model-detail/gc-horizontal

Spark plug (info from the User’s Manual)

  • TypeBPR6ES (NGK) or equivalent (Pressure washer applications)
  • TypeBPR5ES (NGK) or equivalent (All other applications)
  • Gap – 0.028″– 0.030″
  • Socket size – 13/16″ (21mm)

Alternatives BPR5ES, BPR6ES

DIY Videohttps://www.youtube.com/watch?v=2ITFhXAqIdQ

Owner´s manualhttps://cdn.powerequipment.honda.com

Official product pagehttps://engines.honda.com/models/model-detail/gc-vertical

Spark plug (info from the User’s Manual)

  • TypeBPR6ES (NGK) or equivalent (Pressure washer applications)
  • TypeBPR5ES (NGK) or equivalent (All other applications)
  • Gap – 0.028″– 0.030″
  • Socket size – 13/16″ (21mm)

Alternatives BPR5ES, BPR6ES

Owner´s manualhttps://cdn.powerequipment.honda.com

Official product pagehttps://engines.honda.com/models/model-detail/gcv170

Spark plug (info from the User’s Manual)

  • TypeBPR6ES (NGK) or equivalent (Pressure washer applications)
  • TypeBPR5ES (NGK) or equivalent (All other applications)
  • Gap – 0.028″– 0.030″
  • Socket size – 13/16″ (21mm)

Alternatives BPR5ES, BPR6ES

Owner´s manualhttps://cdn.powerequipment.honda.com

Official product pagehttps://engines.honda.com/models/model-detail/gc-vertical

Spark plug (info from the User’s Manual)

  • TypeBPR6ES (NGK) or equivalent (Pressure washer applications)
  • TypeBPR5ES (NGK) or equivalent (All other applications)
  • Gap – 0.028″– 0.030″
  • Socket size – 13/16″ (21mm)

Alternatives BPR5ES, BPR6ES

Owner´s manualhttps://cdn.powerequipment.honda.com

Official product pagehttps://engines.honda.com/models/model-detail/gcv200

Spark plug (info from the User’s Manual)

  • TypeBPR6ES (NGK) or equivalent
  • Gap – 0.028″– 0.031″
  • Socket size – 13/16″ (21mm)

Alternatives https://www.sparkplug-crossreference.com/convert/NGK_PN/BPR6ES

Owner´s manualhttps://cdn.powerequipment.honda.com

Official product pagehttps://engines.honda.com/models/model-detail/gs-horizontal

Spark plug (info from the User’s Manual)

  • TypeBPR6ES (NGK) or equivalent (Pressure washer applications)
  • TypeBPR5ES (NGK) or equivalent (All other applications)
  • Gap – 0.028″– 0.031″
  • Socket size – 13/16″ (21mm)

Alternatives BPR5ES, BPR6ES

Owner´s manualhttps://cdn.powerequipment.honda.com

Official product pagehttps://engines.honda.com/models/model-detail/gs-vertical

Spark plug (info from the User’s Manual)

  • TypeCM5H (NGK) / CMR5H (NGK) or equivalent
  • Gap – 0.024″– 0.028″
  • Socket size – 5/8″ (16mm)

Alternatives https://www.sparkplug-crossreference.com/convert/NGK_PN/CMR5H

Owner´s manualhttps://cdn.powerequipment.honda.com

Official product pagehttps://engines.honda.com/models/model-detail/mini-4

Spark plug (info from the User’s Manual)

  • TypeCM5H (NGK) / CMR5H (NGK) or equivalent
  • Gap – 0.024″– 0.028″
  • Socket size – 5/8″ (16mm)

Alternatives https://www.sparkplug-crossreference.com/convert/NGK_PN/CMR5H

Owner´s manualhttps://cdn.powerequipment.honda.com

Official product pagehttps://engines.honda.com/models/model-detail/mini-4

Spark plug (info from the User’s Manual)

  • TypeCM5H (NGK) / CMR5H (NGK) or equivalent
  • Gap – 0.024″– 0.028″
  • Socket size – 5/8″ (16mm)

Alternatives https://www.sparkplug-crossreference.com/convert/NGK_PN/CMR5H

Owner´s manualhttps://cdn.powerequipment.honda.com

Official product pagehttps://engines.honda.com/models/model-detail/mini-4

Spark plug (info from the User’s Manual)

  • TypeCR5HSB (NGK) / U16FSR-UB (DENSO) or equivalent
  • Gap – 0.024″– 0.028″
  • Socket size – 5/8″ (16mm)

Alternatives https://www.sparkplug-crossreference.com/convert/ngk_pn/cr5hsb

Owner´s manualhttps://cdn.powerequipment.honda.com

Official product pagehttps://engines.honda.com/models/model-detail/gx100

Spark plug (info from the User’s Manual)

  • TypeBPR6ES (NGK) / W20EPR-U (DENSO) or equivalent
  • Gap – 0.028″– 0.031″
  • Socket size – 13/16″ (21mm)

Alternatives https://www.sparkplug-crossreference.com/convert/NGK_PN/BPR6ES

Owner´s manualhttps://cdn.powerequipment.honda.com

Official product pagehttps://engines.honda.com/models/model-detail/mid-gx

Spark plug (info from the User’s Manual)

  • TypeBPR6ES (NGK) / W20EPR-U (DENSO) or equivalent
  • Gap – 0.028″– 0.031″
  • Socket size – 13/16″ (21mm)

DIY Videohttps://www.youtube.com/watch?v=vIXOA_zbSm8

Alternatives https://www.sparkplug-crossreference.com/convert/NGK_PN/BPR6ES

Owner´s manualhttps://cdn.powerequipment.honda.com

Official product pagehttps://engines.honda.com/models/model-detail/mid-gx

Spark plug (info from the User’s Manual)

  • TypeBPR6ES (NGK) / W20EPR-U (DENSO) or equivalent
  • Gap – 0.028″– 0.031″
  • Socket size – 13/16″ (21mm)

DIY Videohttps://www.youtube.com/watch?v=qNzalmfNmE0

Alternatives https://www.sparkplug-crossreference.com/convert/NGK_PN/BPR6ES

Owner´s manualhttps://cdn.powerequipment.honda.com

Official product pagehttps://engines.honda.com/models/model-detail/mid-gx

Spark plug (info from the User’s Manual)

  • TypeBPR6ES (NGK) / W20EPR-U (DENSO) or equivalent
  • Gap – 0.028″– 0.031″
  • Socket size – 13/16″ (21mm)

Alternatives https://www.sparkplug-crossreference.com/convert/NGK_PN/BPR6ES

Owner´s manualhttps://cdn.powerequipment.honda.com

Official product pagehttps://engines.honda.com/models/model-detail/large-gx

Spark plug (info from the User’s Manual)

  • TypeBPR6ES (NGK) / W20EPR-U (DENSO) or equivalent
  • Gap – 0.028″– 0.031″
  • Socket size – 13/16″ (21mm)

Alternatives https://www.sparkplug-crossreference.com/convert/NGK_PN/BPR6ES

Owner´s manualhttps://cdn.powerequipment.honda.com

Official product pagehttps://engines.honda.com/models/model-detail/large-gx

Spark plug (info from the User’s Manual)

  • TypeBPR6ES-11 (NGK) / W20EPR-11 (DENSO) or equivalent
  • Gap – 0.039″– 0.043″
  • Socket size – 13/16″ (21mm)

Alternatives https://www.sparkplug-crossreference.com/convert/ngk_pn/bpr6es-11

Owner´s manualhttps://cdn.powerequipment.honda.com

Official product pagehttps://engines.honda.com/models/model-detail/x-large-gx

Spark plug (info from the User’s Manual)

  • TypeBPR6ES (NGK) / W20EPR-U (DENSO) or equivalent
  • Gap – 0.028″– 0.031″
  • Socket size – 13/16″ (21mm)

DIY Videohttps://www.youtube.com/watch?v=qNzalmfNmE0

Alternatives https://www.sparkplug-crossreference.com/convert/NGK_PN/BPR6ES

Owner´s manualhttps://cdn.powerequipment.honda.com

Official product pagehttps://engines.honda.com/models/model-detail/x-large-gx

Spark plug (info from the User’s Manual)

  • TypeZFR5F (NGK) or equivalent
  • Gap – 0.028″– 0.031″
  • Socket size – 5/8″ (16mm)

Alternatives https://www.sparkplug-crossreference.com/convert/NGK_PN/ZFR5F

Owner´s manualhttps://cdn.powerequipment.honda.com

Official product pagehttps://engines.honda.com/models/model-detail/v-twin-horizontal

Spark plug (info from the User’s Manual)

  • TypeZFR5F (NGK) or equivalent
  • Gap – 0.028″– 0.031″
  • Socket size – 5/8″ (16mm)

Alternatives https://www.sparkplug-crossreference.com/convert/NGK_PN/ZFR5F

Owner´s manualhttps://cdn.powerequipment.honda.com

Official product pagehttps://engines.honda.com/models/model-detail/v-twin-horizontal

Spark plug (info from the User’s Manual)

  • TypeCR5HSB (NGK) / U16FSR-UB (DENSO) or equivalent
  • Gap – 0.024″– 0.028″
  • Socket size – 5/8″ (16mm)

Alternatives https://www.sparkplug-crossreference.com/convert/ngk_pn/cr5hsb

Owner´s manualhttps://cdn.powerequipment.honda.com

Official product pagehttps://engines.honda.com/models/model-detail/gxh50

Spark plug (info from the User’s Manual)

  • TypeCR5HSB (NGK) / U16FSR-UB (DENSO) or equivalent
  • Gap – 0.024″– 0.028″
  • Socket size – 5/8″ (16mm)

Alternatives https://www.sparkplug-crossreference.com/convert/ngk_pn/cr5hsb

Owner´s manualhttps://cdn.powerequipment.honda.com

Official product pagehttps://engines.honda.com/models/model-detail/gxr120

Spark plug (info from the User’s Manual)

  • TypeCR5HSB (NGK) / U16FSR-UB (DENSO) or equivalent
  • Gap – 0.024″– 0.028″
  • Socket size – 5/8″ (16mm)

Alternatives https://www.sparkplug-crossreference.com/convert/ngk_pn/cr5hsb

Owner´s manualhttps://cdn.powerequipment.honda.com

Official product pagehttps://engines.honda.com/models/model-detail/gxv50

Spark plug (info from the User’s Manual)

  • TypeBPR5ES (NGK) / W16EPR-U (DENSO) or equivalent
  • Gap – 0.028″– 0.031″
  • Socket size – 13/16″ (21mm)

Alternatives https://www.sparkplug-crossreference.com/convert/NGK_PN/BPR5ES

Owner´s manualhttps://cdn.powerequipment.honda.com

Official product pagehttps://engines.honda.com/models/model-detail/gxv160

Spark plug (info from the User’s Manual)

  • TypeBPR5ES (NGK) / W16EPR-U (DENSO) or equivalent
  • Gap – 0.028″– 0.031″
  • Socket size – 13/16″ (21mm)

Alternatives https://www.sparkplug-crossreference.com/convert/NGK_PN/BPR5ES

Owner´s manualhttps://cdn.powerequipment.honda.com

Official product pagehttps://engines.honda.com/models/model-detail/large-gx-vertical

Spark plug (info from the User’s Manual)

  • TypeZFR5F (NGK) or equivalent
  • Gap – 0.028″– 0.031″
  • Socket size – 5/8″ (16mm)

Alternatives https://www.sparkplug-crossreference.com/convert/NGK_PN/ZFR5F

Owner´s manualhttps://cdn.powerequipment.honda.com

Official product pagehttps://engines.honda.com/models/model-detail/v-twin-vertical

Spark plug (info from the User’s Manual)

  • TypeZFR5F (NGK) or equivalent
  • Gap – 0.028″– 0.031″
  • Socket size – 5/8″ (16mm)

Alternatives https://www.sparkplug-crossreference.com/convert/NGK_PN/ZFR5F

Owner´s manualhttps://cdn.powerequipment.honda.com

Official product pagehttps://engines.honda.com/models/model-detail/v-twin-vertical

Spark plug (info from the User’s Manual)

  • TypeZFR5F (NGK) or equivalent
  • Gap – 0.028″– 0.031″
  • Socket size – 5/8″ (16mm)

Alternatives https://www.sparkplug-crossreference.com/convert/NGK_PN/ZFR5F

Owner´s manualhttps://cdn.powerequipment.honda.com

Official product pagehttps://engines.honda.com/models/model-detail/v-twin-vertical

Spark plug (info from the User’s Manual)

  • TypeBPR6ES (NGK) / W20EPR-U (DENSO) or equivalent
  • Gap – 0.028″– 0.031″
  • Socket size – 13/16″ (21mm)

Alternatives https://www.sparkplug-crossreference.com/convert/NGK_PN/BPR6ES

Owner´s manualhttps://cdn.powerequipment.honda.com

Official product pagehttps://engines.honda.com/models/model-detail/mid-igx

Spark plug (info from the User’s Manual)

  • TypeBPR6ES (NGK) / W20EPR-U (DENSO) or equivalent
  • Gap – 0.028″– 0.031″
  • Socket size – 13/16″ (21mm)

Alternatives https://www.sparkplug-crossreference.com/convert/NGK_PN/BPR6ES

Owner´s manualhttps://cdn.powerequipment.honda.com

Official product pagehttps://engines.honda.com/models/model-detail/mid-igx

Spark plug (info from the User’s Manual)

  • TypeBPR6ES (NGK) / W20EPR-U (DENSO) or equivalent
  • Gap – 0.028″– 0.031″
  • Socket size – 13/16″ (21mm)

Alternatives https://www.sparkplug-crossreference.com/convert/NGK_PN/BPR6ES

Owner´s manualhttps://cdn.powerequipment.honda.com

Official product pagehttps://engines.honda.com/models/model-detail/mid-igx

Spark plug (info from the User’s Manual)

  • TypeBPR5ES (NGK) or equivalent
  • Gap – 0.028″– 0.031″
  • Socket size – 13/16″ (21mm)

Alternatives https://www.sparkplug-crossreference.com/convert/NGK_PN/BPR5ES

Owner´s manualhttps://cdn.powerequipment.honda.com

Official product pagehttps://engines.honda.com/models/model-detail/igx700

Spark plug (info from the User’s Manual)

  • TypeBPR5ES (NGK) or equivalent
  • Gap – 0.028″– 0.031″
  • Socket size – 13/16″ (21mm)

Alternatives https://www.sparkplug-crossreference.com/convert/NGK_PN/BPR5ES

Owner´s manualhttps://cdn.powerequipment.honda.com

Official product pagehttps://engines.honda.com/models/model-detail/igx800

Is your engine missing from the list?

Feel free to check out the Honda website in case you didn’t find your engine on this list.

Symptoms of a Bad Spark Plug

Are you thinking about replacing your current spark plug? There are some universal signs you need to look for:

  • Your engine won’t start at all
  • The engine needs repeated attempts to start properly
  • The engine misfires
  • Fuel consumption is noticeably increased
  • There are deposits and a buildup of residue on your spark plug
  • The spark plug is damaged

Are there any deposits? You need to remove the spark plug with a proper tool, clean it using a small knife and make sure that it is gapped properly. You can find the ideal gap size in the list above. For more tips and symptoms of a bad spark plug, read this article on the RepairClinic.com website.

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