![NGK BU8H (6431) Spark Plug](http://www.specialistsmallcraft.co.uk/cdn/shop/products/BU8H-GS_large.jpg?v=1628696428)
NGK
NGK BU8H (6431) Spark Plug
NGK BU8H / 6431 Standard Spark Plug Replaces SF-24
OEM quality
Triple-gasket sealing process
Consistent performance
Plug of choice in thousands of boats worldwide
This is the workhorse, the plug that is at the heart of smooth-running engines around the world.