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

Spark plug BR8HS-10 from NGK
Spark plug BR8HS-10 from NGK
article nr.04541

Yamaha: 94702-00247, 94702-00271

12,85 EUR / Piece
incl. 19% VAT
Lieferung Wed 05. Aug - Mon 10. Aug 2026 **
24 months statutory warranty
Spark plug DR7EA from NGK
Spark plug DR7EA from NGK
article nr.04555
13,39 EUR / Piece
(1)
incl. 19% VAT
Lieferung Wed 05. Aug - Mon 10. Aug 2026 **
24 months statutory warranty
NGK TR55 spark plug
NGK TR55 spark plug
article nr.03960

TR55 spark plugs for inboard and outboard engines

7,00 EUR / Piece
incl. 19% VAT
Lieferung Wed 05. Aug - Mon 10. Aug 2026 **
24 months statutory warranty
NGK B6HS spark plug
NGK B6HS spark plug
article nr.03762

B6HS spark plugs for inboard and outboard engines

10,71 EUR / Piece
incl. 19% VAT
Lieferung Wed 05. Aug - Mon 10. Aug 2026 **
24 months statutory warranty
NGK B8HS-10 spark plug
NGK B8HS-10 spark plug
article nr.03766

B8HS-10 spark plugs for Yamaha and Tohatsu outboards

11,89 EUR / Piece
incl. 19% VAT
Lieferung Wed 05. Aug - Mon 10. Aug 2026 **
24 months statutory warranty
Spark plug 6N-E
NGK
Spark plug 6N-E
article nr.NGKIZFR6N-E

SPARK PLUG

32,91 EUR / Piece
incl. 19% VAT
Derzeit nicht verfügbar **
24 months statutory warranty
Ngk spark plug 7HS-10 - Item NGKBP7HS-10
NGK
Ngk spark plug 7HS-10 - Item NGKBP7HS-10
article nr.NGKBP7HS-10

Suitable for the following models: MC4 through 9.8B, MX15/ 18E2

13,19 EUR / Piece
incl. 19% VAT
Lieferung Wed 05. Aug - Mon 10. Aug 2026 **
24 months statutory warranty
Spark plug BR6S from NGK
Spark plug BR6S from NGK
article nr.04538
11,17 EUR / Piece
incl. 19% VAT
Lieferung Wed 05. Aug - Mon 10. Aug 2026 **
24 months statutory warranty
Spark plug CPR6EA-9 from NGK
Spark plug CPR6EA-9 from NGK
article nr.04804

Spark plug for e.g. Suzuki outboard DF15A and DF20A

21,06 EUR / Piece
incl. 19% VAT
Lieferung Wed 05. Aug - Mon 10. Aug 2026 **
24 months statutory warranty
NGK DCPR7E spark plug
NGK DCPR7E spark plug
article nr.09074

Spark plug for Johnson (9.9-15 hp) 4-stroke outboards

16,87 EUR / Piece
incl. 19% VAT
Lieferung Wed 05. Aug - Mon 10. Aug 2026 **
24 months statutory warranty
Ngk spark plug 7HS-10 - Item NGKB7HS-10
NGK
Ngk spark plug 7HS-10 - Item NGKB7HS-10
article nr.NGKB7HS-10

Suitable for the following models: M25/ 30H/ MX25

13,22 EUR / Piece
incl. 19% VAT
Lieferung Wed 05. Aug - Mon 10. Aug 2026 **
24 months statutory warranty
NGK BPR6HS spark plug
NGK BPR6HS spark plug
article nr.04388

BPR6HS spark plugs for inboard and outboard engines

11,78 EUR / Piece
incl. 19% VAT
Lieferung Wed 05. Aug - Mon 10. Aug 2026 **
24 months statutory warranty
NGK spark plug 5ES
NGK
NGK spark plug 5ES
article nr.NGKBPR5ES

Suitable for the following models: BF50

12,95 EUR / Piece
incl. 19% VAT
Lieferung Wed 05. Aug - Mon 10. Aug 2026 **
24 months statutory warranty
Original spare part
RING-COUPLING 190491
RING-COUPLING 190491
article nr.190491

RING-COUPLING

19,85 EUR
(2)
incl. 19% VAT
Lieferung Fri 07. Aug - Mon 10. Aug 2026 **
24 months statutory warranty
Spark plug BR6HS from NGK Yamaha 94702-00248
Spark plug BR6HS from NGK Yamaha 94702-00248
article nr.04536
12,75 EUR / Piece
incl. 19% VAT
Lieferung Wed 05. Aug - Mon 10. Aug 2026 **
24 months statutory warranty
Spark plug BR7HS from NGK
Spark plug BR7HS from NGK
article nr.04539
12,50 EUR / Piece
incl. 19% VAT
Lieferung Wed 05. Aug - Mon 10. Aug 2026 **
24 months statutory warranty
Spark plug DR5HS from NGK
Spark plug DR5HS from NGK
article nr.04553
13,43 EUR / Piece
incl. 19% VAT
Lieferung Wed 05. Aug - Mon 10. Aug 2026 **
24 months statutory warranty
Original spare part
 NGK AR6FS @10 813425
Mercury-Mercruiser-Quicksilver
NGK AR6FS @10 813425
article nr.813425

Original ngk ar6fs @10 813425 / ngk ar6fs @10

8,08 EUR
(2)
incl. 19% VAT
Lieferung Fri 07. Aug - Mon 10. Aug 2026 **
24 months statutory warranty
(Min quantity: 10 )
Original spare part
 NGK B7FS @10 813412
Mercury-Mercruiser-Quicksilver
NGK B7FS @10 813412
article nr.813412

Original ngk b7fs @10 813412 / ngk b7fs @10

11,20 EUR
(2)
incl. 19% VAT
Lieferung Fri 07. Aug - Mon 10. Aug 2026 **
24 months statutory warranty
(Min quantity: 10 )
Original spare part
 NGK BKR7EQUP@4 8M0189609
Mercury-Mercruiser-Quicksilver
NGK BKR7EQUP@4 8M0189609
article nr.8M0189609

Original ngk bkr7equp@4 8m0189609 / ngk bkr7equp@4

31,57 EUR
(2)
incl. 19% VAT
Lieferung Fri 07. Aug - Mon 10. Aug 2026 **
24 months statutory warranty
(Min quantity: 4 )
Displaying 21 to 40 (of 105 products)
  • 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.