Part Number: DEN 5341

Denso 5341 Iridium Power Spark Plug
The Denso 5341 Iridium Power Spark Plug is a high-performance ignition component engineered to deliver exceptional spark efficiency, improved throttle response, and long-lasting reliability in demanding marine applications. Featuring Denso's advanced Iridium Power technology, this spark plug utilizes an ultra-fine iridium center electrode to produce a stronger, more concentrated spark for improved combustion and engine performance.
Designed for modern marine engines that demand precise ignition timing and efficient fuel burn, the Denso 5341 helps promote smoother starts, better fuel economy, cleaner combustion, and consistent power delivery. Its iridium construction offers significantly greater durability than conventional spark plugs, making it an excellent choice for boat owners looking to maximize performance while extending maintenance intervals.
Whether you're completing routine service or upgrading your ignition system, the Denso 5341 delivers dependable results season after season.
Common Engine Applications
The Denso 5341 Iridium Power Spark Plug is commonly used in select Ford-based marine engines, including:
- Indmar Raptor 6.2L
- Indmar Raptor 6.2L HO
- Indmar Raptor 6.2L Supercharged
- Ford 6.2L SOHC marine engine platforms
- High-output Ford-based marine engines used in wake and surf boats
Common Boat Fitments
These engines are frequently found in premium inboard towboats, wake boats, and surf boats, including:
Supra
- Supra SA
- Supra SL
- Supra SE
- Supra SR
- Supra Sunsport
Moomba
- Moomba Mojo
- Moomba Kaiyen
- Moomba Makai
- Moomba Max
- Moomba Craz
Supreme
- Supreme S220
- Supreme S238
- Supreme ZS232
- Supreme ZS252
Centurion
- Centurion Ri230
- Centurion Ri245
- Centurion Fi23
- Centurion Fi25
Additional applications may include custom and specialty marine installations utilizing Ford 6.2L Raptor-based engine packages.
Features
- Genuine Denso 5341 Iridium Power spark plug
- Ultra-fine iridium center electrode technology
- Provides a powerful, consistent spark
- Helps improve throttle response and engine efficiency
- Promotes reliable cold starting and smooth idle quality
- Long service life compared to conventional spark plugs
- Designed to perform in demanding marine environments
Benefits of Iridium Power Technology
Denso's Iridium Power design utilizes a fine-wire center electrode that requires less voltage to fire while producing a more concentrated spark. This results in more efficient combustion, quicker engine response, and improved overall performance. The durable iridium construction also helps maintain optimal spark gap over time, reducing wear and extending replacement intervals.
For owners of Supra, Moomba, Centurion, Supreme, and other boats powered by Ford-based 6.2L marine engines, the Denso 5341 Iridium Power Spark Plug offers premium ignition performance and long-lasting reliability on the water.