NGK 4140 - Alternative spark plugs

There are 12 replacement spark plugs for NGK 4140. The cross references are for general reference only, please check specifications for your application.

Compatible plug on Amazon

NGK Spark Plug Single Piece Pack for Stock Number 4140 or Copper Core Part No. R5673-8

13.26$

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Specifications for NGK 4140

Thread diameter: 14.0 mm
Thread reach: 11.2 mm
Hex size: 16 mm

NGK 4140 replacement spark plugs

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