NGK BP7HS-10 Marine Spark Plug 4-9.8HP 2-Stroke Outboard Tohatsu Mercury Nissan
P-BP7HS-10
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NGK BP7HS-10 Marine Spark Plug
Reliable Ignition for 4-9.8HP 2-Stroke Outboard Engines
Power your marine adventures with the NGK BP7HS-10 Spark Plug, specifically engineered for 4HP to 9.8HP 2-stroke outboard engines. This premium spark plug is designed to deliver consistent, powerful ignition, ensuring your engine starts effortlessly and runs smoothly, even in demanding marine conditions. It's an essential component for optimal engine performance and fuel efficiency.
Crafted with precision by NGK, a leader in spark plug technology, the BP7HS-10 features a robust construction and advanced design elements that contribute to its exceptional longevity and reliability. It's the ideal replacement for maintaining the performance of your Tohatsu, Mercury, Nissan, or other compatible small 2-stroke marine engine, offering a direct fit and uncompromising quality.
Key Features
- ✔ OEM Quality: Built to meet or exceed original equipment manufacturer standards for reliable performance.
- ✔ Copper Core: Solid copper core ensures superior heat dissipation and conductivity for consistent firing.
- ✔ Anti-Fouling Design: 99% pure alumina silicate insulator provides longer insulator noses to resist fouling.
- ✔ Triple-Gasket Seal: Prevents combustion gas leakage, ensuring maximum engine compression and power.
- ✔ Corrosion Resistance: Trivalent metal plating offers superior anti-corrosion and anti-seizing properties for easy installation and removal.
Technical Specs
| Part Number: | NGK BP7HS-10 |
| NGK Stock No.: | 7829 |
| Thread Diameter: | 14mm |
| Thread Reach: | 12.7mm (1/2") |
| Seat Type: | Gasket |
| Hex Size: | 21mm (13/16") |
| Tip Configuration: | Projected |
| Gap: | 1.0mm (0.039") |
| Heat Range: | 7 |
| Resistor Type: | Non-Resistor |
Vehicle Fitment Guide (Common 4-9.8HP 2-Stroke Outboards)
| Make | Model/HP Range | Engine Type |
|---|---|---|
| Tohatsu | 4HP, 5HP, 6HP, 8HP, 9.8HP (e.g., M5B, M8B) | 2-Stroke Outboards |
| Mercury | 4HP Single Cylinder, 5B, 8B, 9.8B (older 2-stroke models) | 2-Stroke Outboards |
| Nissan | NS 5, NS 8A, NS 8B (older 2-stroke models) | 2-Stroke Outboards |
| Yamaha | Various 2-Stroke models (e.g., JOG, BW80, Riva 80) | 2-Stroke Outboards/Scooters |
| Suzuki | A100, T125R, TC120, LT80 QuadSport | 2-Stroke Engines |
OEM Part Number Cross Reference
| ACDelco | R42FS |
| Autolite | 4113, 4123 |
| Bosch | W7BC, 7597 (Stock) |
| Champion | L7YC4, L82YC, OE038, RL87YC, 327 (Stock) |
| Denso | W22FP-U10, 4168, 6037 (Stock) |
| Mercruiser | 33-97184 |
| Motorcraft | AE2C |
| Napa | X936 |
| NGK | 7829 (Stock No.) |
| Yamaha | 94701 00264 |
Frequently Asked Questions
What engines is the NGK BP7HS-10 spark plug compatible with?
The NGK BP7HS-10 spark plug is designed for various 4HP to 9.8HP 2-stroke outboard engines, including models from Tohatsu, Mercury, Nissan, and some Yamaha and Suzuki small 2-stroke applications. Please refer to our detailed fitment guide and cross-reference table for specific models.
What are the benefits of using an NGK spark plug?
NGK spark plugs offer numerous benefits, including reliable starting, improved fuel efficiency, reduced emissions, and longer engine life. They feature advanced designs like solid copper cores for superior heat transfer, triple-gasket seals for leak prevention, and trivalent metal plating for corrosion resistance, all contributing to optimal engine performance.
How often should I replace my marine spark plugs?
The replacement interval for marine spark plugs can vary depending on your engine manufacturer's recommendations and usage. Generally, it's advised to inspect and replace spark plugs annually or after every 100 hours of operation for 2-stroke engines to ensure peak performance and prevent starting issues.
Note: Please verify your vehicle model and year before purchasing.
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