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Marine & Outboard Spark Plugs

NGK Laser Iridium Spark Plug IZFR6F-11 (4095)

SKU: GB-IZFR6F-11

$44.40
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The NGK IZFR6F-11 (Stock No. 4095) is a premium Laser Iridium resistor spark plug used in selected Honda BF200 and BF225 four-stroke outboards, as well as selected Evinrude marine applications. Its fine-wire iridium centre electrode and platinum ground electrode provide dependable ignition and long service life. The plug features an M14 × 1.25 thread, 19 mm reach, 16 mm hex and 1.1 mm factory gap.

Key benefits

Key Benefits

  • - NGK Stock Number: 4095
  • - Laser Iridium construction
  • - Fine-wire iridium centre electrode
  • - Platinum-tipped ground electrode
  • - Long service life and excellent resistance to electrode erosion
  • - Built-in resistor for electrical-noise suppression
  • - 1.1 mm / 0.043" factory gap
  • - NGK heat range 6
  • - M14 × 1.25 thread
  • - 19 mm / ¾" reach
  • - Compact 16 mm / 5/8" hex
  • - Flat gasket seat
  • - Excellent corrosion resistance for demanding marine applications

Specifications & Dimensions

  • - Brand: NGK
  • - Part Number: IZFR6F-11
  • - NGK Stock Number: 4095
  • - Series: Laser Iridium
  • - Thread Diameter: 14 mm / 0.551"
  • - Thread Size: M14 × 1.25
  • - Thread Pitch: 1.25 mm / 0.049"
  • - Thread Reach: 19 mm / 0.750"
  • - Hex / Spanner Size: 16 mm / 5/8"
  • - Factory Spark Gap: 1.1 mm / 0.043"
  • - NGK Heat Range: 6
  • - Seat Type: Flat / gasket
  • - Resistor: Yes
  • - Resistance: Approximately 5 kΩ
  • - Centre Electrode: Fine-wire iridium
  • - Ground Electrode: Platinum-tipped
  • - Ground Electrodes: 1
  • - Terminal: Solid/fixed
  • - Sealing Washer: Yes

Compatible Outboard Motors

  • Honda BF200 – 200 HP
  • - Honda BF200A – 200 HP
  • - Model years: 2002–2012
  • - Spark Plug: IZFR6F-11
  • - Gap: 1.1 mm
  • NGK's current application data shows that the later 2013-on BF200A changes to IZFR6K-11E,

Honda BF225 – 225 HP

  • - Honda BF225A – 225 HP
  • - Model years: 2002–2012
  • - Spark Plug: IZFR6F-11
  • - Gap: 1.1 mm
  • For 2013-on BF225A, NGK specifies IZFR6K-11E instead.

Evinrude Outboards

  • - Evinrude 40 HP – E40DRLSCB – 2008 onward
  • - Evinrude 40 HP – E40DSLSCS – 2008 onward
  • - Evinrude 40 HP – E40DTLSCS – 2008 onward
  • - Evinrude 50 HP – E50DSLSCS – 2008 onward
  • These applications specify IZFR6F-11 Stock No. 4095 with a 1.1 mm gap.

Cross-Reference / Related Spark Plugs

  • - NGK: IZFR6F-11
  • - NGK Stock Number: 4095
  • - NGK conventional alternative: ZFR6F-11 — only where the engine application specifically permits it
  • - NGK ZFR6F-11 Stock Number: 4291

Signs the Spark Plug Needs Replacing

  • - Difficult starting
  • - Rough or unstable idle
  • - Engine misfire
  • - Hesitation during acceleration
  • - Reduced engine power
  • - Poor high-RPM performance
  • - Increased fuel consumption
  • - Excessive deposits
  • - Electrode erosion
  • - Corrosion
  • - Cracked ceramic insulator
  • - Damaged sealing washer

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