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⚡ Ignite your ride with NGK’s precision spark – don’t get left in the cold!
The NGK 4551 Standard Spark Plug (BR9HS-10) features a 98% pure copper core for optimal heat dissipation, a high-grade alumina silicate ceramic insulator for enhanced durability, and cold-rolled threads to prevent engine damage. Designed for vehicle-specific fit, it includes trivalent plating to eliminate anti-seize needs and corrugated ribs to prevent flashover, ensuring reliable ignition and peak engine performance.





| ASIN | B0000AXTBJ |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #257,121 in Automotive ( See Top 100 in Automotive ) #1,560 in Automotive Replacement Spark Plugs |
| Brand | NGK |
| Brand Name | NGK |
| Core Material | Copper |
| Customer Reviews | 4.6 4.6 out of 5 stars (233) |
| Date First Available | August 25, 2003 |
| Global Trade Identification Number | 00087295145517 |
| Included Components | End Product & Information |
| Item Dimensions LxWxH | 4.35 x 2.24 x 2.08 inches |
| Item Package Dimensions L x W x H | 3.58 x 1.02 x 0.79 inches |
| Item Weight | 0.05 Kilograms |
| Manufacturer | Quicksilver |
| Model Name | Quicksilver |
| Model Year | 2017 |
| Number of Items | 1 |
| OEM Part Number | 4551 |
| Package Weight | 0.06 Kilograms |
| Part Number | BR9HS-10 |
| Thread Size | Standard size for UTV model YAM BR9HS1000000 |
| Top Material Type | Ceramic |
| UPC | 087295145517 |
| Vehicle Service Type | Car, Truck |
| Warranty Description | Includes manufacturer provided warranty |
J**K
Perfect break In
This is a great big bore kit scooter cylinder break in spark plug , it resisted fouling for almost 50 mile break in ,as soon as I tried to run it hard on the pipe for the hard break in it felt and I was pretty happy to see that it was dark and fouled ,and worked while my engine was running rich
S**.
Works good.
Works like it should.
G**X
Don't forget (to change) the boat plugs!
Bought these for my 2 stroke Yamaha 130, they worked great and had the correct gap already set.
A**R
Quality
Ngk makes quality spark plugs for a multitude of applications
U**E
1996 Yamaha 225
I always use these plugs. Just ran the boat for the first time this season and it's a perfectly running beast after all these years. Highly recommend.
J**N
Perfect fit for outboard engine
I use 6 of these for my Yamaha 225 OX66 outboard engine. The only issue with these is that they do get surface rust/corrosion quickly when the motor is used in salt water. I’ve found it beneficial to install them, then spray “fluid film” corrosion protection spray which has greatly improved the issue. Otherwise these are OEM replacement for this motor.
S**P
Fix engine miss right away
Plugs came in on time, packaging kept plugs up damaged, set gap to specs and installed easily Will continue to use product
J**.
Quality and receiving it timely
Change spark plugs on my outboard engines
D**L
NGK Qualität, mit perfektem Zündfunken.
C**E
Nickel
じ**ん
最高です
G**R
Pratique et longévité
ま**ん
普通に良いです。
Trustpilot
2 months ago
2 weeks ago