Ngk Cr9eix Iridium Ix Spark Plug
Ngk Cr9eix Iridium Ix Spark Plug
Available in stock (15)
About this product
About this product
Experience the pinnacle of spark plug technology with the NGK CR9EIX Iridium IX Spark Plug. Designed for ultimate performance and longevity, this spark plug delivers enhanced ignition and improved engine efficiency.
Description
The NGK CR9EIX Iridium IX Spark Plug represents a significant leap in spark plug technology. Featuring an iridium electrode that is substantially smaller than platinum or conventional nickel electrodes, this design minimizes voltage requirements and maximizes ignition system life. The ultra-small diameter center electrode ensures efficient and consistent sparking, leading to improved engine performance and fuel economy. The new metal shell plating offers superior anti-corrosion properties, ensuring durability and reliability even in harsh operating conditions. Upgrade to NGK Iridium IX spark plugs for a smoother, more responsive, and more reliable engine.
Features & highlights
- Experience superior ignition and enhanced engine performance.
- Iridium electrode provides exceptional durability and spark efficiency.
- Ultra-small diameter center electrode reduces voltage requirements.
- Metal shell plating enhances anti-corrosion qualities for extended life.
- Improved fuel economy and reduced emissions.
Technical specifications
- Brand: NGK Spark Plugs
- Vendor Part Number: 3521
- Center Electrode Projection: Non-Projected
- Center Electrode Type: Necked Down
- Electrical Resistance: 5k Ohms
- Electrode Tip Material: Iridium
- Ground Electrode Configuration: Single
- Ground Electrode Shape: Grooved
- Heat Range: 9
- Hex Size: 16 mm (5/8")
- Spark Gap: 0.8 mm
- Terminal Configuration: Threaded Stud
- Thread Reach: 19.1 mm (3/4")
- Thread Size: 10 mm
- Type: Resistor
Important to know
Ensure correct spark plug gap and torque settings during installation. Refer to your vehicle's service manual for specific recommendations.
Shipping & Return
Shipping & Return
Free shipping to GLS parcel shop parcel box for purchases over DKK 1,000.
GLS home delivery costs DKK 59.
We do our best to ship your order as quickly as possible. All orders are generally packed within 24 hours on weekdays.
There is a 14-day return policy. Read more
Parts Denmark Info
Parts Denmark Info
Parts Denmark is a new webshop based in Denmark. We have a physical location you can visit (No showroom yet), and we have both email and phone support in our opening hours.
Our company info is:
Parts Denmark ApS
VAT: DK45974758
Dam Holme 11
3660 Stenløse, Denmark
hello@partsdenmark.com
+45 222 333 29
Best regards,
William Svendsen & Martin Høyer (Owners)
Specifications
NGK SPARK PLUGS
3521
Spark Plug
10 mm
19,1 mm (3/4")
0.8 mm
Threaded Stud
9
16 mm (5/8")
Grooved
Single
Iridium
Necked Down
Non-Projected
5k Ohms
Resistor
Each


Who is behind Parts Denmark
Martin and William are the duo behind Parts Denmark — an unlikely but awesome combo of a tech-savvy young IT wizard and a seasoned motorcycle guru who’s seen (and fixed) it all. Together, we’ve built a team with big ambitions, plenty of passion, and a shared mission to create great things — side-by-side with you.

