Fire a reliable spark on every stroke with the DENSO Spark Plug 4130. It's a direct-fit replacement plug for a range of Suzuki motorcycles, including the 1986-1988 SUZUKI GSX-R1100, the 1988-1989 SUZUKI GSX-R750, the 1989-1998 SUZUKI GSX750F KATANA, and the 1997-2005 SUZUKI GSF1200S BANDIT.
A spark plug delivers the high-voltage spark that ignites the air-fuel mixture in the combustion chamber, so a fresh plug is the foundation of clean, consistent ignition.
- Core job: Provides the spark gap where ignition-system voltage jumps to light the air-fuel charge each cycle.
- Signs it may need replacing: Hard starting, misfire, rough idle, hesitation, or reduced fuel economy can be signs a worn plug should be inspected and replaced.
- Service tip: Replace as a matched set so all cylinders fire evenly, and set to the specification in your vehicle's service information.
If a worn or fouled spark plug is the cause of your ignition trouble, this DENSO plug replaces it. Consult your service information for the correct gap and torque, and confirm this plug matches your engine's required reach, seat type, and heat range before installing.
Interchange: X27ETR · Manufacturer part number 4130
