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Champion Spark Plug RC9MC4 for Honda Engines
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Champion Marine Spark Plug (RC9MC4)

Part No. 121425


You pay £1.80 Incl VAT You pay £1.50 Excl VAT

Normally £2.80 Normally £2.33

RRP £3.11 £2.59

Save £1.31 (42.1%) Save £1.09 (42.1%)


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Brand Champion
Model RC9MC4
Construction Nickel Alloy Electrodes, Copper Core Centre Electrode.
Suitability Honda: 115 hp OHC 4-Stroke BF115, 130 hp OHC 4-Stroke BF130, 135 hp OHC 4-Stroke BF135, 150 hp OHC 4-Stroke BF150, 200 hp SOHC 4-Stroke BF200 2004-02 & 225 hp SOHC 4-Stroke BF225 2004-02.
Thread Size 14mm Male
Size Hex: 16mm (5/8")
Reach 19mm (3/4")
Range Heat: 9
Resistor Yes
Projection Projected Core Nose
Seat Gasket Seat
Centre Electrode Standard Nickel
Ground Electrode J-Gap Nickel

Champion Part Number: RC9MC4

Champion spark plugs are the industry standard fitment now for many well-known engine manufacturers. Whether you have an inboard or outboard petrol engine, chances are Champion can provide the spark plug you need. This is the RC9MC4 model Champion spark plug.

This conventional spark plug has nickel alloy electrodes and a copper core centre electrode that allows increased conductivity and heat control.

RC9MC4 Spark Plug suits:


  • 115 hp OHC 4-Stroke BF115
  • 130 hp OHC 4-Stroke BF130
  • 135 hp OHC 4-Stroke BF135
  • 150 hp OHC 4-Stroke BF150
  • 200 hp SOHC 4-Stroke BF200 2004-02
  • 225 hp SOHC 4-Stroke BF225 2004-02

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