Spark Plug SILMAR9A9S | Marine Ignition | 4Boats
SILMAR9A9S-NGK
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Regular price£15.60
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Tax included.
NGK SILMAR9A9S nickel spark plug with a V‑groove centre electrode, designed to improve ignitability for marine and outboard engines - an ideal outboard spark plug for many two‑ and four‑stroke engines.
- Part number: SILMAR9A9S
- Electrode: V‑groove centre electrode for stronger spark
- Material: nickel core and electrode
- Thread: M14 × 1.25
- Reach: 19 mm (3/4 in)
- Hex: 16 mm (5/8 in) for standard socket
- Gap: factory 0.9 mm (0.Ø 35 in) - adjustable
- Plating: corrosion‑resistant shell
- Applications: suitable for many two‑ and four‑stroke outboard engines
Check your engine manual for correct fitment and torque settings; replace as part of scheduled maintenance to ensure reliable ignition.
See Ignition Components and NGK parts for related items.
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