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⚡ Ignite your ride with NGK Iridium IX – Power, precision, and performance in every spark!
The NGK CR9EIX Iridium IX Spark Plug 4-pack delivers premium ignition performance with a durable iridium core, ensuring reliable starts and enhanced engine power. Designed as a direct OEM replacement, these plugs guarantee perfect fitment for your vehicle, backed by high customer ratings and trusted NGK quality.
| ASIN | B004SKYAWM |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #15,599 in Automotive ( See Top 100 in Automotive ) #77 in Automotive Replacement Spark Plugs |
| Brand | NGK |
| Core Material | Iridium |
| Customer Reviews | 4.8 4.8 out of 5 stars (483) |
| Date First Available | April 10, 2012 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 4.5 ounces |
| Item model number | 3521 |
| Manufacturer | NGK |
| Manufacturer Part Number | CR9EIX |
| Model | 4 pack NGK Iridium IX 3521 Spark Plug |
| OEM Part Number | 7085731 |
| Position | Front, Rear |
| Product Dimensions | 3.31 x 0.94 x 3.32 inches |
| Thread Size | 10mm |
| Top Material Type | Iridium |
| Vehicle Service Type | Car, Truck |
M**.
GOOD PRODUCT
VALUE WAS GREAT FOR QUALITY. FIT WAS PERFECT START WAS RIGHT ON. POWER WAS IMPROVED. DURABLE AS IT SHOULD BE
D**.
Good
Great price for these quality spark plugs. My bike is running better!
B**L
Great plugs
I installed these in my 2021 Indian Scout Bobber ABS. I can see the improvement over the regular plugs. The bike starts better and runs better at idle and full throttle. I recommend them.
J**E
Great product, great price, great company
Great!! Can’t go wrong!
B**S
Harley Plugs
Bike seems to idle & run better
M**R
Best Plugs for Harley’s
Best plug for the M8 Harley 107
P**K
Harley M8 plugs!
Cheapest price I found! Fast shipping
D**L
Cumple su función
S**T
Good item would buy again
R**R
They Look good ngk quality plugs
I**I
Plugs were perfectly packaged for overseas shipping. Arrived in expected time frame. Price was better than expected. Great company to deal with as they supplied timely ongoing updates of processes right up to delivery. Many thanks 👍
T**R
Perfect match! Installed on Indian scout 2021 So far, so good
C**M
As expected
Trustpilot
2 months ago
1 month ago