Spark plugs

Marine spark plugs for boat engines

Marine spark plugs are important components in the ignition system of boat engines. They ensure the ignition of the fuel-air mixture in the engine and enable reliable starting and stable engine performance. In this category you will find spark plugs for outboards and marine engines that are used for maintenance, service and the reliable operation of boat drives.

Mercruiser spark plugs - guide & selection aid

NGK BPR6EFS spark plug
NGK BPR6EFS spark plug
article nr.02148

BPR6EFS spark plugs for inboard and outboard engines

5,91 EUR / Piece
incl. 19% VAT
Lieferung Wed 05. Aug - Mon 10. Aug 2026 **
24 months statutory warranty
NGK BR6FS spark plug
NGK BR6FS spark plug
article nr.02164

Spark plugs BR6FS for inboard and outboard engines

6,75 EUR / Piece
incl. 19% VAT
Lieferung Wed 05. Aug - Mon 10. Aug 2026 **
24 months statutory warranty
NGK ITR4A15 spark plug
NGK ITR4A15 spark plug
article nr.04227

ITR4A15 spark plugs for inboard and outboard engines

22,03 EUR / Piece
incl. 19% VAT
Lieferung Wed 05. Aug - Mon 10. Aug 2026 **
24 months statutory warranty
Spark plug Delco MR43T, 898264001
Spark plug Delco MR43T, 898264001
article nr.04226

Mercruiser / Mercury No. 898264001

10,49 EUR / Piece
incl. 19% VAT
Lieferung Wed 05. Aug - Mon 10. Aug 2026 **
24 months statutory warranty
Spark plug RV15YC4 from Champion
Spark plug RV15YC4 from Champion
article nr.03953
11,75 EUR / Piece
incl. 19% VAT
Lieferung Wed 05. Aug - Mon 10. Aug 2026 **
24 months statutory warranty
NGK BP7HS spark plug
NGK BP7HS spark plug
article nr.02141

Spark plugs BP7HS for inboard and outboard engines

10,18 EUR / Piece
incl. 19% VAT
Lieferung Wed 05. Aug - Mon 10. Aug 2026 **
24 months statutory warranty
NGK BPR7ES spark plug
NGK BPR7ES spark plug
article nr.02140

Spark plugs BP7ES for inboard and outboard engines

12,24 EUR / Piece
incl. 19% VAT
Lieferung Wed 05. Aug - Mon 10. Aug 2026 **
24 months statutory warranty
NGK BPR6ES spark plug
NGK BPR6ES spark plug
article nr.02149

Spark plug for e.g. Suzuki outboard DF4 - DF6 and DF70

5,89 EUR / Piece
incl. 19% VAT
Lieferung Wed 05. Aug - Mon 10. Aug 2026 **
24 months statutory warranty
NGK BPR6FS spark plug
NGK BPR6FS spark plug
article nr.03952

BPR6FS spark plugs for inboard and outboard engines

6,23 EUR / Piece
incl. 19% VAT
Lieferung Wed 05. Aug - Mon 10. Aug 2026 **
24 months statutory warranty
NGK BR6ES spark plug
NGK BR6ES spark plug
article nr.03443

Spark plugs BR6ES for inboard and outboard engines

12,99 EUR / Piece
incl. 19% VAT
Lieferung Wed 05. Aug - Mon 10. Aug 2026 **
24 months statutory warranty
NGK DPR7EA-9 spark plug
NGK DPR7EA-9 spark plug
article nr.04449

DPR7EA-9 spark plugs for inboard and outboard engines

8,81 EUR / Piece
incl. 19% VAT
Lieferung Wed 05. Aug - Mon 10. Aug 2026 **
24 months statutory warranty
Spark plug BKR6E from NGK
Spark plug BKR6E from NGK
article nr.03771

Spark plugs for Suzuki and Johnson / Evinrude outboards.

12,61 EUR / Piece
incl. 19% VAT
Lieferung Wed 05. Aug - Mon 10. Aug 2026 **
24 months statutory warranty
Spark plug BUHW2 from NGK
Spark plug BUHW2 from NGK
article nr.04543 EOL
7,94 EUR / Piece
incl. 19% VAT
Derzeit nicht verfügbar **
24 months statutory warranty
NGK DCPR6E spark plug
NGK DCPR6E spark plug
article nr.04174

Spark plug for Suzuki (DF30 - DF90) and Tohatsu (2.5 - 30 hp) 4-stroke outboards

9,35 EUR / Piece
incl. 19% VAT
Lieferung Wed 05. Aug - Mon 10. Aug 2026 **
24 months statutory warranty
Spark plug DPR6EA-9 from NGK
Spark plug DPR6EA-9 from NGK
article nr.04562
6,42 EUR / Piece
incl. 19% VAT
Lieferung Wed 05. Aug - Mon 10. Aug 2026 **
24 months statutory warranty
NGK UR4 spark plug
NGK UR4 spark plug
article nr.09040

UR4 spark plugs for inboard and outboard engines

12,88 EUR / Piece
incl. 19% VAT
Lieferung Wed 05. Aug - Mon 10. Aug 2026 **
24 months statutory warranty
NGK YR5 spark plug
NGK YR5 spark plug
article nr.03949

YR5 spark plugs for inboard and outboard engines

11,46 EUR / Piece
incl. 19% VAT
Lieferung Wed 05. Aug - Mon 10. Aug 2026 **
24 months statutory warranty
NGK IZTR5B11 Iridium spark plug
NGK IZTR5B11 Iridium spark plug
article nr.09862

Spark plugs IZTR5B11 for inboard and outboard engines

23,80 EUR / Piece
incl. 19% VAT
Lieferung Wed 05. Aug - Mon 10. Aug 2026 **
24 months statutory warranty
Ngk spark plug Bpr6Efs
NGK
Ngk spark plug Bpr6Efs
article nr.NGKBPR6EFS

Suitable for the following models: 8.1GI-H, 8.1GI-HF, 8.1GXI-G, 8.1GXI-GF, 8.1OSI-D, 8.1OSI-DF

14,92 EUR / Piece
incl. 19% VAT
Lieferung Wed 05. Aug - Mon 10. Aug 2026 **
24 months statutory warranty
Spark plug 55
NGK
Spark plug 55
article nr.NGKTR55

SPARK PLUG

14,28 EUR / Piece
incl. 19% VAT
Lieferung Wed 05. Aug - Mon 10. Aug 2026 **
24 months statutory warranty
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  • Over 15 years’ experience in the marine spare parts trade
    Over 15 years’ experience in the marine spare parts trade
  • Official Mercury & MerCruiser dealer
    Official Mercury & MerCruiser dealer
  • A wide range of boat engine spare parts from A to Z
    A wide range of boat engine spare parts from A to Z
  • Spare parts for Volvo Penta, MerCruiser, Yamaha, Honda, Suzuki and more
    Spare parts for Volvo Penta, MerCruiser, Yamaha, Honda, Suzuki and more
  • Fast delivery for maintenance, servicing and repairs
    Fast delivery for maintenance, servicing and repairs
  • Order boat spare parts conveniently online 24/7
    Order boat spare parts conveniently online 24/7

Marine spark plugs for outboards and boat engines

Spark plugs are a central component of a boat engine's ignition system. They generate the electrical spark that ignites the fuel-air mixture in the cylinder and thus starts the combustion process in the engine. A functioning spark plug is crucial for a reliable engine start and stable engine performance.

Marine spark plugs are specially developed for use in boat engines and must be able to withstand high temperatures, vibrations and moisture.

Functions of a spark plug in a boat engine

The spark plug fulfills several important functions in engine operation:

  • Generation of an electrical ignition spark

  • Ignition of the fuel-air mixture in the cylinder

  • Supporting stable engine running

  • Ensuring an efficient combustion process

A correctly functioning spark plug ensures that the engine runs smoothly and can help to reduce fuel consumption and emissions.

Spark plugs for different boat engines

Marine spark plugs are used in many different boat engines, including

  • Outboard engines

  • Inboard engines

  • Jet ski engines

  • Generators and auxiliary engines

Different spark plug types are used depending on the engine manufacturer and engine series. Many well-known manufacturers of marine spark plugs include NGK, Champion and Denso.

Maintenance and replacement of marine spark plugs

Spark plugs are one of the typical maintenance and wear parts of a boat engine. Deposits, wear or incorrect electrode gaps can impair the function of the spark plug and lead to starting problems or loss of power.

Many manufacturers therefore recommend regular inspection and replacement of the spark plugs as part of engine maintenance.