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⚡ Ignite your drive with NGK’s precision power!
The NGK CR9EIX Iridium IX Spark Plug is a genuine OEM replacement part featuring a high-performance iridium core for enhanced ignition efficiency and durability. Designed for vehicle-specific fitment, it ensures optimal engine performance and longevity. Highly rated by users, this spark plug is a trusted choice for professional-grade automotive maintenance.
| Asin | B004SKYAWM |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #7,806 in Automotive (See Top 100 in Automotive) #28 in Automotive Replacement Spark Plugs |
| Brand Name | NGK |
| Compatible With Vehicle Type | Car, Truck |
| Core Material | Iridium |
| Customer Reviews | 4.8 4.8 out of 5 stars (585) 4.8 out of 5 stars |
| Included Components | 3521 |
| Item Weight | 4.48 ounces |
| Manufacturer | NGK |
| Manufacturer Part Number | CR9EIX |
| Manufacturer Warranty Description | Includes manufacturer provided warranty |
| Model Number | 3521 |
| Number Of Items | 1 |
| Oem Equivalent Part Number | 7085731 |
| Thread Size | 10mm |
| Top Material Type | Iridium |
| Unit Count | 1 Count |
User
Great maintenance item. Performs great!
Excellent for my ‘23 HD Road Glide Special. Put a little anti seize and dielectric grease.Easy to install, 25 min job and the bike runs like it should!
User
Real Deal.
Real Deal. As Advertised. Good Seller.
User
2024 Yamaha VX Limited Tr1 Engine
We use these plugs in our 2024 Yamaha VX limited waverunner with the TR-1 engine. They do NOT improve horsepower or top speed, so if your purchasing for one of those, that is a fools errand. What these plugs DO in fact benefit you is longevity and quicker firing at startups. Some folks are saying they notice quicker throttle response and all and that's just psychological foolery lol. These are an excellent replacement for the oem NKG CR9EB plugs if your looking for less changing intervals and improved startups.
User
Great plugs
Second time using these in my 2018 RGS. Spark gap was correct out of the box--the bike seems to like them.
User
Spark plugs 19 cvo ltd 117
Pregapped, bike runs goodSeem a little more responsive fuel mileage better
User
2022 Triglide m8 worked perfectly
Worked perfect in my 2022 Triglide ultra
User
Possibly user error?
Only leaving a 4 star review because we haven't determined if these spark plugs are the correct fit or if it is user error. They arrived on time and in good condition but my bike doesnt run as good as it did before replacing the other plugs with these.
User
GOOD PRODUCT
VALUE WAS GREAT FOR QUALITY. FIT WAS PERFECT START WAS RIGHT ON. POWER WAS IMPROVED. DURABLE AS IT SHOULD BE
User
Value
Good item would buy again
User
Highly recommended
Excellent night and day difference from regular plugs
User
Pésimo material
Muy mala calidad del producto original.
User
Long Life Plugs
I use these NGK CR9EIX iridium plugs in my 2017 M8 Street Glide. Starts and runs great. In my experiences using Iridium plugs in my other bikes......they last LONG.
User
Price
Way better price then harley plugs
Trustpilot
2 weeks ago
1 month ago