NGK IGNITION LEADS & CAPS

Copper core ignition leads with interference suppression are comprised of a copper core. A silicone layer surrounds the core, which serves as an electrical insulator. Copper is an excellent conductor, but is also very sensitive to corrosion. Therefore, the copper core of such ignition cables is tin-plated. The outer insulation, made of silicone rubber, can withstand temperatures up to 220°C and is resistant to gas and oil.

Carbon resistor ignition leads are comprised of a fiberglass core with a silicone interior insulation. There is a coal-impregnated braided fiberglass inside a carbon resistor ignition cable. For carbon resistor ignition cables, the interference suppression resistance depends on the wire length. You can calculate this on Niterra's TekniWiki website.

Two silicone layers and fiberglass fabric surround ignition leads with inductive resistors. Like carbon resistor ignition leads, these ignition cables have a fiberglass core. The inner insulation made of silicone provides for stability and protects against high ignition voltages. You can calculate the interference suppression resistance on Niterra's TekniWiki website.

Also known as an ignition cable, ignition leads (which consist of an ignition wire and connector) link the ignition coils to the spark plugs. Ignition leads form part of one of the four product lines offered within the NGK Ignition Parts brand. Thanks to Niterra's competence in the field of ignition technology, the company is able to offer ignition leads and connectors in the Aftermarket that are OE equivalent quality and ideally complement its wide range of spark plugs and ignition coils.
 

There are three different types of ignition leads: Copper Core Ignition Leads with an interference suppression resistor (in the connectors), Carbon Ignition Leads with active resistance, and Fibreglass Ignition Leads with an inductive resistor. These types differ based on the materials used for the conductor and the type of resistor required for interference suppression. It is important to choose the correct technology for any specific engine, leading to the ideal performance of the ignition system. The company’s ignition leads meet the OE standards of car manufacturers.
 

NGK ignition leads guarantee outstanding insulation, a high level of resistance of up to 200°C and resistance to vibrations and fluctuations in temperature and humidity. Choosing the brand’s ignition leads secures permanent reliability under extreme conditions, even over an extended period of time.

Caps are mainly required for motorcycles, scooters, small engines and marine applications. They are used to connect each spark plug to a high tension (HT) ignition lead; typically by screwing them onto the end of the cable. Occasionally, caps can be applied to 4-wheel vehicles as well, in which case they are usually pre-assembled. The caps feature a resistance element made of a high-quality ceramic material. This ensures a constant resistance, with small deviations in case of overload. The housing is made of phenolic resin with extremely high heat resistance and tensile strength. Special rubber bushings at both ends prevent electrical losses due to moisture.
 

Caps, both with and without resistance, are available in Niterra’s product range. The resistances vary between 1-10 kiloohms (kOhm), filtering the electromagnetic interferences. To choose the correct application, it is necessary to check the part that needs to be replaced and then change accordingly.