NGK Genuine BP6ES Spark Plug - silver/white

Product Information

A - Since they early 80's fuel injection systems have been designed by manufacturers to be fitted with resistor spark plugs. Fitting non resistor plugs in a resistor application can cause damage expensive components, affect overall performance and increase fuel consumption. MB spec copper core ignition leads with the resistance built into the connector ends should all all test at aprox 1,000ohms +/- a few ohms when new no matter what the length of the lead and that is what the system was designed for. No.” The BPR5ES spark plug is designed with a lower heat range of 5 compared to the BPR6ES, which has 6; hence it may not be able to dissipate heat as efficiently as the BPR6ES. 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. BPR5ES. The heat range is the main difference between the two spark plugs. If the gap (distance) between the center and side electrodes is too small, you will most likely experience a weak spark, thereby leading to poor engine performance. Does it matter which spark plug?

Undoubtedly, NGK manufactures some of the best spark plugs in the automotive industry. Nevertheless, their various spark plug models are designed for use in different applications. This listing is for one plug so if you need more then simply add that number of items to your basket. Boy this plug debate gets bogged down at times and confuses the crap out of most particularly considering our situation re non resistance plugs required and then what heat range plug to use for individual cases??

Can I Use A BPR5ES Instead Of A BPR6ES

The spark plug has a tapered cut ground electrode that helps to minimize quenching and enhance flame kernel growth for better engine performance. Like BPR5ES, the spark plug also has a thread diameter and a thread reach of 14mm and 19mm, respectively, which makes it fit for a wide range of engine types and models. Through extensive research & development NGK has developed a range of spark plugs specifically aimed at the horticultural market BPR5ES and BPR6ES spark plugs are both manufactured by the famous NGK, a leading part manufacturer in the automotive industry. While the two spark plug models share a couple of similarities, there are still some notable differences between them in the similitude of BPR5ES Vs. BPR7ES. Suitable for any points type ignition system, our Powerspark Electronic Ignition Electronic Kits, and other electronic ignition systems.

Typically, on NGK spark plugs, the higher the range number, the colder the spark plug, and vice versa. In other words, the lower the range number, the hotter the plug. Therefore, 8 is hotter than 9. However, the reverse is the case for some spark plug brands (the higher the number, the hotter the plug). If you desire an NGK spark plug to be used in a high-performance vehicle engine, ensure to choose a colder spark plug that can handle the high RPM and loads. What is the proper gap for BPR5ES?The P in BPR6ES stands for “projected insulator or projected tip.” This type of spark plug has an extended ceramic insulator tip that protrudes further than regular insulator tips in most spark plugs. The spark plug heat range has no relationship to the electrical energy transferred through the spark plug. The heat range of a spark plug is the range in which the plug works well thermally. The heat rating of each NGK spark plug is indicated by a number; lower numbers indicate a hotter type, higher numbers indicate a colder type. I fail then to understand at all why Bosch would recommend using a resistor plug in a W126 application - you are just asking for trouble. Mixing spark plug types is not a good idea as they are manufactured with different specifications and compatibility. Hence, if you combine different spark plug types in your vehicle’s engine, you may experience inconsistent performance and efficiency. Champion RN11YC4, Denso W16EPR-U, and Bosch WR7DC spark plugs are some of the close substitutes for the BPR6ES spark plug.