/ Spare parts / Inboards / Spark plugs

Marine Spark Plugs for Inboard Engines

At Marineparts you'll find a wide range of marine spark plugs for inboard gasoline engines, with options from NGK, Champion, Autolite and Denso. Our selection covers spark plugs for Volvo Penta gasoline, MerCruiser, OMC Cobra and King Cobra, Crusader, Indmar and PleasureCraft (PCM) marine gasoline inboards. Marine spark plugs are designed for the unique demands of the marine environment – corrosion resistance and a reliable spark under high humidity and varying loads. Always check the heat range and gap against your engine manufacturer's service manual before ordering. Orders ship quickly from our own warehouse.
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At Marineparts you'll find a wide range of marine spark plugs for inboard gasoline engines, with options from NGK, Champion, Autolite and Denso. Our selection covers spark plugs for Volvo Penta gasoline, MerCruiser, OMC Cobra and King Cobra, Crusader, Indmar and PleasureCraft (PCM) marine gasoline inboards. Marine spark plugs are designed for the unique demands of the marine environment – corrosion resistance and a reliable spark under high humidity and varying loads. Always check the heat range and gap against your engine manufacturer's service manual before ordering. Orders ship quickly from our own warehouse.
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All products in this category (9)

Aftermarket
Spark Plug Champion RS9YC
Spark Plug Champion RS9YC
€7.17
Expected delivery: Jun 2, 2026
Spark Plug NGK BPR7ES
Spark Plug NGK BPR7ES
€7.17
In stock
Spark Plug NGK BR7ES
Spark Plug NGK BR7ES
€7.17
In stock
Aftermarket
Spark Plug Champion RN4C
Spark Plug Champion RN4C
€6.37
Expected delivery: May 28, 2026
Spark Plug NGK UR4IX
Spark Plug NGK UR4IX
€16.73
Expected delivery: May 26, 2026
Spark Plug NGK BPR6EFS
Spark Plug NGK BPR6EFS
€6.37
In stock
Aftermarket
Spark Plug Champion RN6YC
Spark Plug Champion RN6YC
€4.78
Expected delivery: Jun 1, 2026
Spark Plug NGK BR6FS
Spark Plug NGK BR6FS
€7.17
In stock
Aftermarket
Spark Plug Champion RV8C
Spark Plug Champion RV8C
€6.37
In stock

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