Ngk Spark Plug - Reliable Performance
Ngk Spark Plug - Reliable Performance
Available in stock (15)
-
Estimated delivery: Feb 06 - Feb 10
About this product
About this product
Ensure reliable ignition and optimal engine performance with this high-quality NGK Spark Plug. Designed for enthusiasts and professionals alike, this spark plug delivers consistent spark and efficient combustion.
Description
The NGK Spark Plug provides superior anti-corrosion and anti-seizing properties thanks to its trivalent metal plating. The pure alumina silicate ceramic insulator provides exceptional strength and enhanced heat transfer, preventing overheating and ensuring reliable performance even under demanding conditions. Triple seals effectively prevent leakage, maintaining optimal compression and fuel efficiency. Corrugated ribs are incorporated to prevent flashover, ensuring consistent spark delivery. Furthermore, the copper core efficiently aids in heat removal, extending the life of the spark plug and maintaining stable operating temperatures. With a 14 mm thread size and 19.1 mm (3/4") thread reach, installation is straightforward, ensuring a secure fit and optimal performance.
Features & highlights
- Trivalent metal plating resists corrosion and seizing, ensuring long-lasting durability.
- Alumina silicate ceramic insulator provides superior strength and heat transfer for reliable performance.
- Triple seals prevent leakage, maintaining optimal compression and fuel efficiency.
- Corrugated ribs prevent flashover, ensuring consistent spark delivery.
- Copper core efficiently removes heat, extending spark plug life and preventing overheating.
- Designed for easy installation with a 14 mm thread size and 19.1 mm (3/4") reach.
Technical specifications
- Brand: NGK Spark Plugs
- Vendor Part Number: 4677
- Center Electrode Projection: Non-Projected
- Center Electrode Type: Standard
- Electrical Resistance: 5k Ohms
- Electrode Tip Material: Nickel Alloy
- Ground Electrode Configuration: Single
- Ground Electrode Shape: Angled
- Heat Range: 9
- Hex Size: 20.6 mm (13/16")
- Spark Gap: 0.8 mm
- Terminal Configuration: Solid Terminal
- Thread Reach: 19.1 mm (3/4")
- Thread Size: 14 mm
- Type: Resistor
Important to know
Ensure this spark plug is the correct fitment for your specific motorcycle model. Refer to your motorcycle's service manual for spark plug specifications and installation procedures.
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
4677
Spark Plug
14 mm
19,1 mm (3/4")
0.8 mm
Solid Terminal
9
20,6 mm (13/16")
Angled
Single
Nickel Alloy
Standard
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.

