Part Number: 41-BPR6EFS

NGK BPR6EFS Spark Plug
The NGK BPR6EFS Spark Plug is a trusted marine ignition component designed to deliver dependable starting, smooth engine operation, and efficient combustion in a wide range of inboard boat engines. Built to NGK's exacting standards, this spark plug provides reliable spark energy under demanding marine conditions, helping maintain peak performance whether you're pulling skiers, surfing, wakeboarding, or cruising.
A healthy ignition system is essential for maximizing power, fuel economy, and engine reliability. As spark plugs accumulate hours of operation, electrode wear and carbon deposits can reduce ignition efficiency, resulting in rough idle, sluggish acceleration, hard starting, and increased fuel consumption. Replacing worn spark plugs with NGK BPR6EFS plugs helps restore factory performance and keeps your engine running smoothly throughout the season.
Engineered for durability and consistent performance, the NGK BPR6EFS is a popular choice for many GM-based marine engines found in today's most recognized towboats and ski boats.
Common Engine Applications
The NGK BPR6EFS spark plug is commonly used in select marine engines, including:
- Indmar Monsoon 310
- Indmar Monsoon 320
- Indmar Monsoon 325
- Indmar Assault 310
- Indmar Assault 325
- Indmar 5.7L MPI
- PCM Excalibur 330
- PCM Excalibur 343
- MerCruiser 5.7L MPI
- MerCruiser 350 MAG
- Crusader 5.7L MPI
- Volvo Penta 5.7Gi
Common Boat Fitments
These engines are frequently found in popular inboard ski, wake, and surf boats, including:
Supra
- Supra Launch 20SSV
- Supra Launch 21V
- Supra 22SSV
- Supra Sunsport 22V
- Supra Comp
Moomba
- Moomba Mobius LSV
- Moomba Mobius XLV
- Moomba Outback
- Moomba Mojo
- Moomba Mobius LS
MasterCraft
- MasterCraft X-2
- MasterCraft X-15
- MasterCraft X-Star
- MasterCraft ProStar 197
- MasterCraft MariStar 225
Malibu
- Malibu Wakesetter VLX
- Malibu Wakesetter 23 LSV
- Malibu Response LX
- Malibu Sunsetter LXi
Nautique
- Ski Nautique 196
- Super Air Nautique 210
- Super Air Nautique 220
- Nautique 216
Centurion
- Centurion Elite V
- Centurion Avalanche
- Centurion Air Warrior
- Centurion Enzo SV230
Features
- Genuine NGK BPR6EFS spark plug
- Designed for marine engine applications
- Delivers consistent ignition performance
- Helps improve starting reliability and throttle response
- Supports efficient fuel combustion
- Resistant to fouling and premature wear
- Ideal for annual tune-ups and preventative maintenance
Why Choose the NGK BPR6EFS?
Boat owners and marine technicians trust NGK because of its reputation for quality, consistency, and long-term reliability. The BPR6EFS is engineered to provide dependable spark delivery under load, helping maintain smooth operation and efficient performance in demanding marine environments.
Whether you're servicing a Supra, Moomba, MasterCraft, Malibu, Nautique, or Centurion equipped with a compatible GM-based marine engine, the NGK BPR6EFS Spark Plug delivers the reliability and performance needed for a successful day on the water.