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NGK Spark Plugs

NGK BR6HS and BR7HS Resistor Short Reach Spark Plug

NGK BR6HS and BR7HS Resistor Short Reach Spark Plug

Regular price £3.00 GBP
Regular price Sale price £3.00 GBP
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NGK BR6HS & BR7HS Resistor style Short Reach Spark Plug for various Vespa Models.

Spark Plug Explained: 

Typically the heat range for NGK Spark Plugs varies from 2-11. This number indicates the thermal characteristics of a spark plug, or how ‘hot’ or ‘cold’ a spark plug is. The term hot/cold is commonly used to describe whether a spark plug heats up easily (hot) or whether it provides resistance to heating up (cold).

Generally, low power engines such as lawn mowers don’t produce a large amount of heat, hence use a low heat range (or hot) spark plug such as a 4 heat range. This means the spark plug will heat up easily and reach its optimal operating temperature. High performance engines on the other hand produce a large amount of heat, hence a high heat range (or cold) spark plug such as a 10 heat range needs to be used to resist the heat developed by the engine.

Several factors influence the heat range of a spark plug, although typically the insulator nose design provides an indication of the heat range of a spark plug.

When a spark plug absorbs heat produced from combustion, the heat is transferred through the centre electrode and insulator nose to the metal shell, which then transfers the heat into the engine casing and circulating coolant.

Scooter Vista, located in the Vale of Glamorgan (near Cardiff), is your destination for high-quality spare parts for classic scooters. Our extensive stock of suppliers from Italy and Germany ensures that we can provide the best parts for both Lambretta and Vespa, all at competitive retail prices. Plus, if there's a specific product you need that is not listed on our website, simply send us an email and we will do our best to get it for you. Trust Scooter Vista for all your spare part needs!

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