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⚡ Ignite your ride with NGK’s precision spark power!
The NGK LFR6A 6668 Spark Plug pack of 8 is a marine-grade ignition solution designed specifically for Yamaha 1.8L watercraft engines. Featuring a unique V-cut electrode for faster spark development, a precise 0.9mm gap, and a 5K Ohm resistor to minimize electrical interference, these plugs deliver reliable, smooth engine performance. With a 26.5mm reach and 16mm hex size, they offer a direct fit replacement that outperforms dealership options at a better price, making them essential for annual maintenance.
| ASIN | B07PDYZNPW |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #38,118 in Automotive ( See Top 100 in Automotive ) #267 in Automotive Replacement Spark Plugs |
| Brand | NGK |
| Brand Name | NGK |
| Compatible with Vehicle Type | Car, Truck |
| Core Material | Copper |
| Customer Reviews | 4.9 out of 5 stars 131 Reviews |
| Gap Size | 0.9 Millimeters |
| Included Components | 6668 |
| Item Weight | 0.96 Pounds |
| Manufacturer | NGK |
| Manufacturer Part Number | 6668 |
| Manufacturer Warranty Description | Includes manufacturer provided warranty |
| Model Number | 6668 |
| Number of Items | 1 |
| Thread Size | 14 millimeters |
| Top Material Type | Nickel |
| UPC | 087295195758 |
| Unit Count | 1.0 Count |
| Vehicle Service Type | Car, Truck |
A**W
Great product!
Work great on my Yamaha boat!
J**N
Highly recommended
The best plugs available. Use in a Yamaha 200
B**E
Boat runs like new!
2017 Yamaha 212x was beginning to have some stumbling problems after owning it for a couple of years, and one of the engines conked out a couple of times before leaving the dock. I had no maintenance history on the board but it's likely that the plugs were original. Replaced them (30-minute job to take care of both 1.8L engine) and it's running like new again. You're supposed to replace the plugs every couple of seasons, and will be doing it with the recommended NGK plugs here going forward.
N**E
Direct fit for the 1.8L
Direct replacement for the marine Yamaha 1.8L And way better price than the dealership. According to the manual they need to be changed along with the annual oil change.
B**A
Good fast delivery
Product functions as advertised.
A**R
Fixed my issue
Worked as a good spark plug should. Made my Yamaha boat purr
D**I
NGK Spark Plugs
They are genuine NGK spark plugs.
J**Y
Perfect fit for 2015 Yamaha 212SS.
Got these for service on my 2015 Yamaha 212SS. Works Perfect.
Trustpilot
5 days ago
1 month ago