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Marine & Outboard Spark Plugs

NGK V-Power Spark Plug BPR4EY (2128) (3432)

SKU: GB-BPR4EY

$8.80
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The NGK BPR4EY (Stock No. 3432) is a standard resistor spark plug featuring NGK's V-Groove nickel centre electrode for improved ignitability and efficient combustion. Its copper-core construction assists heat transfer, while the built-in resistor reduces electrical interference. With a 14 mm thread, 19 mm reach and gasket seat, BPR4EY is designed for petrol engines specifically specifying this plug or an approved equivalent.

Key benefits

Key Benefits

  • - NGK V-Groove centre electrode for improved ignitability
  • - Nickel centre and ground electrodes
  • - Copper-core construction for efficient heat dissipation
  • - Built-in resistor helps suppress electrical interference
  • - Projected electrode configuration
  • - Flat gasket/washer seat
  • - Corrosion-resistant metal shell
  • - NGK heat range 4
  • - 19 mm long-reach thread
  • - Standard replacement spark plug manufactured to OEM specifications

Specifications & Dimensions

  • - Brand: NGK
  • - Part Number: BPR4EY
  • - NGK Stock Number: 3432
  • - Spark Plug Type: Standard resistor V-Groove
  • - 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: 20.8 mm / 13/16"
  • - Factory Spark Gap: 0.9 mm / 0.036"
  • - NGK Heat Range: 4
  • - Seat Type: Flat / gasket seat
  • - Resistor: Yes
  • - Resistance: Approximately 5 kΩ
  • - Centre Electrode: Nickel
  • - Centre Electrode Core: Copper
  • - Centre Electrode Design: V-Groove / projected
  • - Centre Electrode Projection: Approximately 4 mm / 0.157"
  • - Ground Electrode: Nickel
  • - Ground Electrode Configuration: J-Gap
  • - Number of Ground Electrodes: 1
  • - Insulator: Ceramic
  • - Insulator Height: Approximately 56 mm / 2.20"
  • - Sealing Washer: Yes – crush gasket
  • - Terminal: Solid/non-removable nut

Cross-Reference Spark Plugs & Part Numbers

  • - NGK: BPR4EY
  • - NGK Stock Number: 3432
  • - Champion: RN14YC
  • - Champion: 405
  • - Yamaha: 94709-00342
  • - Suzuki: 09482-00159

Important Fitment Information

  • The BPR4EY uses a 14 mm × 1.25 thread, 19 mm reach, gasket seat and resistor construction. It should not be selected simply because another plug shares the same thread dimensions.
  • Also distinguish BPR4EY from BPR4EY-11. The -11 version denotes a different supplied electrode-gap specification and should not automatically be substituted. NGK lists these as separate plug numbers.
  • NGK advises that cross-reference information is a guide only and that the engine application should be confirmed before substitution.

Signs the Spark Plug Needs Replacing

  • - Difficult starting
  • - Rough or unstable idle
  • - Engine misfiring
  • - Hesitation during acceleration
  • - Reduced engine power
  • - Increased fuel consumption
  • - Carbon deposits
  • - Oil fouling
  • - Excessive electrode wear
  • - Corrosion
  • - Cracked or damaged ceramic insulation

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