1 years
China
Certification: ISO9001 factory production; CE documents available upon request
Real Product Photos: Spark plug full‑unit view, electrode close‑up, marine engine application reference picture
This standard aftermarket marine spark plug B7HS‑10 (2129) is a reliable interchangeable spare for Yamaha, OMC and Suzuki marine outboard engines. It cross‑replaces part numbers 94701‑00217, 502194 and 09482‑00532.
Built with anti‑corrosion metal shell and wear‑resistant electrode material. This standard spark plug delivers steady ignition output, excellent heat dissipation and strong anti‑fouling performance, well‑suited for humid and salt‑spray marine working conditions. It supplies consistent spark energy to support complete and efficient combustion inside engine cylinders.
As a core ignition component inside combustion chambers, it generates stable spark to ignite fuel‑air mixture. Good spark‑plug condition effectively reduces misfire, rough idle, power hesitation and hard‑starting troubles, maintaining smooth engine running during on‑water operation.
Manufactured in strict compliance with original OEM specifications, this spark plug matches original thread dimension and seating standard. It resolves common ignition‑system faults including electrode erosion, heavy carbon deposit, weak spark and intermittent misfire caused by long‑term marine‑duty cycles.
All critical dimensions comply with OEM requirements for direct installation. Inspect electrode gap prior to mounting. Apply correct torque and avoid over‑tightening to prevent thread or cylinder‑head damage.
Replace your aged or worn‑out factory spark plug with this aftermarket component. You will restore dependable ignition performance for your marine outboard motor. Stick to regular marine maintenance routines. These practical steps lower misfire risks and sustain trustworthy motor performance out on the water.
NGK B7HS-10 replacement spark plugs
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