Ngk Spark Plug - Superior Ignition Performance
Ngk Spark Plug - Superior Ignition Performance
Available in stock (15)
-
Estimated delivery: Feb 06 - Feb 10
About this product
About this product
Maximize your engine's performance with this high-quality NGK Spark Plug. Designed for optimal ignition and longevity, this spark plug ensures efficient combustion and reliable starts. Experience improved fuel economy and reduced emissions with this essential component.
Description
The NGK Spark Plug features trivalent metal plating, providing superior anti-corrosion and anti-seizing properties, ensuring a long service life even in harsh environments. Its pure alumina silicate ceramic insulator offers exceptional strength and improved heat transfer, preventing overheating and maintaining consistent performance. The triple seals effectively prevent leakage, maintaining optimal compression within the cylinder. Corrugated ribs are engineered to prevent flashover, ensuring a stable and reliable spark. The copper core efficiently dissipates heat, preventing pre-ignition and promoting cooler operating temperatures for enhanced engine reliability. With a 14 mm thread size and 12.7 mm (1/2") thread reach, this NGK spark plug is designed for easy installation and a secure fit.
Features & highlights
- Trivalent metal plating for superior corrosion and seizing resistance.
- Pure alumina silicate ceramic insulator enhances strength and heat transfer.
- Triple seals prevent combustion leakage for optimal performance.
- Corrugated ribs minimize flashover, ensuring consistent spark.
- Copper core efficiently removes heat, preventing pre-ignition.
- Standard projected tip for improved ignitability.
Technical specifications
- Brand: NGK Spark Plugs
- Vendor Part Number: 3725
- Center Electrode Projection: Projected
- Center Electrode Type: Standard
- Electrical Resistance: 5k Ohms
- Electrode Tip Material: Nickel Alloy
- Ground Electrode Configuration: Single
- Ground Electrode Shape: Standard
- Heat Range: 8
- Hex Size: 20.6 mm (13/16")
- Spark Gap: 0.7 mm
- Terminal Configuration: Removable Nut
- Thread Reach: 12.7 mm (1/2")
- Thread Size: 14 mm
- Type: Resistor
Important to know
Please verify compatibility with your specific engine model before purchase. Ensure proper torque during installation to avoid damage.
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
3725
Spark Plug
14 mm
12,7 mm (1/2")
0.7 mm
Removable Nut
8
20,6 mm (13/16")
Standard
Single
Nickel Alloy
Standard
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.

