NGK is the brand leader in the UK spark plug market and are the world's biggest supplier to many major car manufacturers. Each and every one of their products are designed to meet the most rigorous standards and are the professionals' choice because of their quality and technical excellence. Their plugs can be found in use by teams in F1, WRC and MotoGP. Put simply, NGK genuine spark plugs are the workhorse at the heart of smooth-running engines around the world.

The plug also has a resistor built into the ceramic insulator that helps to minimize electromagnetic interference and noise. The BPR6ES high-quality materials and durable construction style provide exceptional performance and extended service life. It does this thousands of times each minute. Over time spark plugs start to break down, resulting in a poor spark. A healthy engine needs good clean spark plugs.However, it is always better to consult your car’s manufacturer’s manual to ascertain the spark plugs’ specifications for your internal combustion engine; otherwise, ask a professional auto mechanic. What does the P stand for in BPR6ES?

BPR5ES spark plug is used to combat vehicle engine issues that are fuel-related. The spark plug provides faster ignition, as well as enhanced fuel efficiency, smoother acceleration, and minimal emissions. All NGK spark plugs use copper cores but rely on precious metals for their electrode construction as copper alone is superior for heat dissipation but is a soft metal with a low melting point. 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. Champion RC12YC and Denso W16EX-U are equivalent to BPR5ES. However, inasmuch as these spark plugs are equivalent with respect to their heat range and physical dimensions, they also have slight differences.The BPR5ES is built with a smaller electrode than its BPR6ES counterpart. This makes the BPR5ES deliver a hotter spark and better ignition. However, the smaller electrode can also result in faster wear and tear on the spark plug. Insulator Generally, both the BPR5ES and the BPR6ES spark plugs are sold with a standard manufacturer’s warranty. However, the period and terms of the warranty will largely depend on the supplier in some cases. What Is The Difference Between NGK BPR5ES And BPR4ES? 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.

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. BERU Ultra X and Ultra X Platinum ? the spark plugs for x-tremely high demands. | Federal-Mogul Global Aftermarket ago under guidance of a local Mercedes Authorised Repair/service Centre the owner "who is also an old school Mercedes fanatic" told me the best now plug to run in our engines is "Beru Ultra-X UX79" Part # 0 002 335 600 In other words, the BPR6ES spark plug is more suitable in high-performance engines that generate a lot of heat due to its ability to prevent overheating. So, if your car’s engine is built to run with BPR6ES spark plugs and you replace them with BPR5ES, you may experience fouling, misfiring, overheating, etc. The proper gap for the BPR5ES spark plug is 0.028 in – 0.030 in (0.70 mm – 0.80 mm). It is essential to state that the gap is a significant factor that determines the performance and efficiency of a spark plug.Since they can dissipate a lot of heat efficiently, most high-performance car owners use BPR6ES spark plugs to manage the high level of heat generated by their engines to prevent overheating. If you run a hotter spark plug in your vehicle’s internal combustion engine, there’s a tendency to experience overheating. If this is the case, the electrodes in the spark plug may wear out faster. You may also experience pre-ignition issues. A spark plug produces a high intensity electrical discharge (the spark) inside the combustion chamber, igniting your fuel to keep the engine firing. This listing is for one plug so if you need more then simply add that number of items to your basket. 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.