Mercury & Mercruiser Spark Plug NGK ITR4A15 8M0204739

Quicksilver Spark Plug NGK ITR4A15 8M0204739

Quicksilver 8M0204739 NGK ITR4A-15 Laser Iridium Spark Plug is a premium replacement spark plug designed for select MerCruiser 4.3L, 5.0L, 5.7L, and 6.2L MPI engines with ECM 555. Featuring an NGK Laser Iridium fine-wire center electrode, this spark plug delivers reliable ignition, improved fuel efficiency, stable idle, and long service life for dependable marine engine performance.

The plug comes pre-gapped to the specifications recommended by the engine manufacturer for easy installation. Its pure alumina silicate ceramic insulator provides excellent strength and heat transfer, while the trivalent metal plating offers outstanding corrosion resistance in harsh marine environments and helps prevent thread seizure for easier removal. For consistent engine performance, replace all spark plugs at the same time and always use the spark plug specified in your owner's manual.

Product Features:

• Genuine NGK Laser Iridium spark plug for select MerCruiser MPI engines
• Fits 2001 and newer 4.3L, 5.0L, 5.7L, and 6.2L MPI engines with ECM 555
• Fine-wire iridium center electrode provides excellent ignition performance and slow wear
• Helps improve fuel efficiency, reduce emissions, and resist fouling
• Pre-gapped to engine manufacturer specifications for easy installation
• Trivalent metal plating resists corrosion and helps prevent thread seizure
• Copper core enhances heat transfer and extends service life
• Ribbed suppressor seal helps prevent spark flashover and misfires
• Replace all spark plugs at the same time for optimum engine performance
• Use only the spark plug recommended in your engine owner's manual

Fits:

• MerCruiser  4.3L, 5.0L, 5.7L & 6.2L MPI engines with ECM 555 (2001 and newer)

Replaces

• Replaces AC# 41-101, 41-932 & 41-993

Note: Verify the correct spark plug for your engine by consulting your owner's manual before installation.

Product Details:

• Brand: Quicksilver
• Manufacturer Part Number: 8M0204739
• Part Type: Laser Iridium Spark Plug

California Residents: WARNING Cancer and Reproductive Harm - P65Warnings.ca.gov