Description
The NGK CR9EB Standard Spark Plug for Yamaha MR-1 and TR-1 engines is a proven replacement choice for riders who want dependable ignition performance, clean combustion, and OE level reliability from their personal watercraft. At IPDRacing.com, we focus only on watercraft products, and this NGK spark plug fits right into that mission by delivering the consistency serious PWC owners expect for maintenance, tune-ups, and routine service on Yamaha applications.
- OE approved spark plug design for reliable Yamaha watercraft performance
- Solid terminal construction for secure installation and dependable connection
- 5-rib insulator helps resist flashover in demanding operating conditions
- Solid copper core supports heat dissipation, conductivity, and broad heat range
- Cold rolled threads help protect the cylinder head during installation and removal
- Triple gasket sealing process helps reduce gas leakage past the shell
- Corrosion resistant trivalent plating improves long term serviceability
When it comes to Yamaha MR-1 and TR-1 engine maintenance, spark plug quality matters. The NGK CR9EB is built to provide stable ignition performance while standing up to the heat, vibration, and moisture that come with real world watercraft use. Details like the corrosion resistant plating and cold rolled threads make future service easier, while the copper core and sealing design help support efficient operation and long term dependability.
Specifications include a 10mm thread diameter, 1.0mm thread pitch, gasket seat, 19mm reach, 5/8 inch hex size, solid terminal, and a .031 inch gap. For riders who want a trusted spark plug for Yamaha PWC service, the NGK CR9EB is a smart, reliable choice.







