To access Klarna finance, you’ll need to have a web enabled device with you at point of purchase. This type of spark plug has an extended ceramic insulator tip that protrudes further than regular insulator tips in most spark plugs.A resistor-type spark plug has an inbuilt resistor that decreases the noise level of the ignition made when you start your car. Although NGK BP6ES and BPR6ES spark plugs are manufactured by NGK, the two models come with some discrepancies like the case of BPR5ES 11 Vs. It means the 5 heat range level in the NGK BPR5ES keeps it colder compared to the BPR4ES spark plug which has the highest 4th thermal stage. So, when differentiating between the spark plug BPR4ES vs BPR5ES, if you are looking for a lightweight option, then go for the NGK BPR5ES spark plug. The spark plug has a tapered cut ground electrode that helps to minimize quenching and enhance flame kernel growth for better engine performance.