NGK V-Power spark plug XR4 is supplied here in a box of 4 and is a classic copper-core spark plug for those who want a stable spark, reliable operation and dependable performance. The NGK V-Power series is known for providing efficient ignition and stable combustion, making this spark plug suitable both as a replacement and as a standard upgrade for many petrol engines.
The spark plug is built with a copper-core centre electrode and nickel on both the centre and ground electrode, giving a good balance of durability, heat dissipation and everyday reliability. The flat seat and 14 mm thread diameter make it important to always check correct fitment against the engine specifications before installation.
NGK XR4 has a resistance of 5000 ohms and a pre-set gap of 0.040", which helps ensure stable ignition and reduced electrical noise in the ignition system. This makes it a strong choice for anyone wanting a proven NGK spark plug with classic construction and dependable function.
Specifications
Manufacturer: NGK
Series: V-Power
Item number: 5858
Part number: XR4
Pack size: Box of 4
Resistance: 5000 ohms
Ground electrode tip design: Standard
Ground configuration: Standard
Ground electrode core material: Nickel
Electrical terminal type: Non-removable nut
Centre electrode core material: Copper
Centre electrode tip material: Nickel
Pre-set gap: .040"
Ground electrode quantity: 1
Hex size: 13/16"
Insulator height: 55.00
Heat range: 4
Seat type: Flat seat
Reach: .375"
Thread diameter: 14.00 mm
