Best current price£3.45from The Green Spark Plug Company
Shopping.co.uk recommended and popular offers
The Green Spark Plug Company£3.45Visit shop Ngk B-4L 3112 Spark Plug Copper Core B4l New Ngk-B-4L Large
Visit shop11 offers from £3.45 - £18.47
View price history by clicking the chart icon.
The NGK B-4L Spark Plug (MPN: 3112) is designed for petrol engines, acting as the crucial component to ignite the air-fuel mixture and power your vehicle. Its unique design ensures optimal performance across a range of heat ratings. While it offers reliable ignition, users should be aware that it is sold individually and compatibility with specific engine types should always be confirmed.
| Model Part Number | 3112 |
|---|---|
| Brand | NGK |
The NGK B-4L spark plug has an outer thread of 14mm and a thread length of 11.2mm.
The hex nut size required for the NGK B-4L spark plug is 20.8mm.
No, the NGK B-4L spark plug does not have interference suppression.
Yes, the NGK B-4L spark plug comes with an unscrewable SAE connector.
This spark plug is sold individually.
It features a nickel center electrode and a single earthed electrode.
The spark projection for this model is 1mm.
Check the spark plug connection. Ensure it is properly tightened and the ignition lead is securely attached. Inspect the spark plug for signs of fouling or damage; replace if necessary.
Verify the spark plug is the correct type and specification for the engine. Ensure it is properly gapped (if adjustable, though this model is fixed) and clean. Check the ignition system for other potential faults.
This can indicate underlying engine issues such as worn piston rings or valve seals, or incorrect fuel mixture. Consult an engine mechanic to diagnose and address the root cause.
Setup: The NGK B-4L spark plug features a 14mm outer thread and an 11.2mm thread length, with a 20.8mm hex nut size for installation. Ensure the engine is cool before attempting replacement. Carefully thread the spark plug into the cylinder head by hand to avoid cross-threading. Once finger-tight, use a torque wrench to tighten to the manufacturer's specified torque. The unscrewable SAE connector should be attached securely to the ignition lead.
Compatibility: This spark plug is designed for petrol engines. Verify that its specifications (thread size, heat range, electrode configuration) match the requirements listed in your vehicle's or equipment's service manual. It has a single earthed electrode and no interference suppression.
Care: Spark plugs are wear items and typically do not require maintenance. However, when replacing or inspecting, ensure the electrode surfaces are clean and free from excessive carbon buildup or damage. If cleaning is necessary, use a spark plug cleaner or a soft brush. Avoid using abrasive materials that could damage the electrodes.
