Spark plugs are responsible for providing an ignition source inside your engine’s combustion chamber. Energy is transferred from the ignition coil to the plug which creates a spark igniting the air-fuel mixture. 

Our technicians and Mercury recommends replacement at the 300-hour service maintenance interval. 

• NGK Fine Wire Platinum Tipped Center Electrode ensures higher durability, deliver slow wear rate, stable spark, superior anti-fouling, improved fuel efficiency and lower emissions
• This spark plug meets Mercury Marine original equipment manufacturer specifications to best protect your engine and ensure its optimum performance
• Check your engine owner’s manual for the correct spark plug and use only the plug as recommended by your engine’s original equipment manufacturer
• NGK Trivalent metal plating also provides superior anti-corrosion in the marine environment and anti-seizing for easier removal
• Longer service life with a copper core and ribbed suppressor seal for durability and performance

Sold as set of 6 spark plugs. 

Manufacturer Part #: NGK LKAR7C-9

Direct Replacement for OEM Part #: 

• 33-8M0135348
• 8M0135348
• 8M0204737
• 8M0135348

Fits The Following Engines:

• Mercury Verado V6 3.4L 175
• Mercury Verado V6 3.4L 200
• Mercury Verado V6 3.4L 225