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⚡ Ignite your marine adventures with NGK’s precision spark power!
The NGK Spark Plug LFR6A 6668 (Pack of 8) is a genuine, direct-fit replacement designed specifically for Yamaha 1.8L marine engines. Featuring a unique V-cut electrode for faster spark development, a durable copper core, and a precise 0.9mm gap, these plugs optimize ignition efficiency and engine performance. With a 16mm hex size for easy installation and a 5K Ohm resistor to reduce electrical interference, this pack ensures reliable, smooth operation for your watercraft’s ignition system.
| ASIN | B07PDYZNPW |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #101,276 in Automotive ( See Top 100 in Automotive ) #679 in Automotive Replacement Spark Plugs |
| Brand | NGK |
| Core Material | Copper |
| Customer Reviews | 4.9 4.9 out of 5 stars (129) |
| Date First Available | March 8, 2019 |
| Item Weight | 15.4 ounces |
| Item model number | 6668 |
| Manufacturer | NGK |
| Manufacturer Part Number | 6668 |
| Model | 8 pack NGK V-Power 6668 Spark Plug |
| Position | Front, Rear |
| Product Dimensions | 3.7 x 0.94 x 6.64 inches |
| Thread Size | 14 millimeters |
| Top Material Type | Nickel |
| UPC | 087295195758 |
| Vehicle Service Type | Car, Truck |
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.
A**R
Fixed my issue
Worked as a good spark plug should. Made my Yamaha boat purr
A**W
Great product!
Work great on my Yamaha boat!
D**I
NGK Spark Plugs
They are genuine NGK spark plugs.
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.
S**T
Perfect for Yamaha 1.8
OEM replacement for Yamaha jet boat
J**Y
Perfect fit for 2015 Yamaha 212SS.
Got these for service on my 2015 Yamaha 212SS. Works Perfect.
Y**Y
NGK
Perfect for my 2013 Yamaha AR240.
Trustpilot
2 months ago
2 months ago