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⚡ Ignite your ride with precision power—because every spark counts!
This NGK LFR6A 6668 Spark Plug 4-pack is engineered for watercraft like Yamaha FX and FZR series, featuring a unique V-Power v-cut electrode for rapid spark development, a precise 0.9mm gap, and a 5K Ohm resistor to reduce quenching. With a 16mm hex size for easy installation and a durable copper core, these plugs deliver OEM-level performance and reliability, backed by a 4.9-star rating and manufacturer warranty.
| ASIN | B07PGPVQFL |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #15,329 in Automotive ( See Top 100 in Automotive ) #86 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 273 Reviews |
| Gap Size | 0.9 Millimeters |
| Included Components | 6668 |
| Item Weight | 7.68 ounces |
| Manufacturer | NGK |
| Manufacturer Part Number | LFR6A-6668 |
| Manufacturer Warranty Description | Includes manufacturer provided warranty |
| Model Number | 6668 |
| Number of Packs | 4 |
| OEM Equivalent Part Number | LFR6A-6668 |
| Thread Size | M |
| Top Material Type | copper |
| UPC | 087295176016 |
| Unit Count | 1.0 Count |
| Vehicle Service Type | Car, Truck |
C**H
Perfect for Yamaha
Perfect replacement for OEM Yamaha. My plugs were long past due for a change. We noticed a major improvement in performance.
A**K
Nice Product
Fit a 2023 Yamaha AR190 just fine. OEM spark plugs.
B**N
Cheaper than local parts stores
Oem to the ones in my 13' yammy fx cruiser. Cheaper than local and I didn't have to leave the house.
N**I
Reliable
Went into a jetski. No issues been using this brand for years now.
J**S
Spark plugs
NGK is the best!
C**O
Great
Work great
P**E
wave runner spark plugs
Great OEM plugs
E**N
Excellent
Good. Works perfect
G**M
Worked perfect
Fast shipping
Trustpilot
4 days ago
3 weeks ago