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. NGK BPR5ES and BPR4ES spark plugs are both manufactured by NGK. The two spark plugs are built with several similarities in many ways. However, they also have a couple of vital differences just like BP5ES Vs. BPR5ES. In other words, while the NGK BP6ES spark plug is more suitable for high-performance vehicle engines that operate under high RPM or load conditions, the BPR6ES is ideal for vehicle engines that operate under lower RPM or load conditions. Can I Use A BPR5ES Instead Of A BPR6ES

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. Champion RN11YC4, Denso W16EPR-U, and Bosch WR7DC spark plugs are some of the close substitutes for the BPR6ES spark plug. Nevertheless, the fine-wire electrode is prone to breaking, especially in the case of high-stress applications. What Is The Difference Between NGK BP6ES And BPR6ES? These slight differences can impact their performance and suitability for different vehicle engines. The following are some of the differences between BPR5ES and BPR6ES with respect to their metal property, insulator, copper core, triple seal, performance, pricing, and warranty. MetalIt 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? Through extensive research & development NGK has developed a range of spark plugs specifically aimed at the horticultural market 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?? BERU Ultra X and Ultra X Platinum ? the spark plugs for x-tremely high demands. | Federal-Mogul Global Aftermarket

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? The BPR6ES spark plug is designed with a copper core electrode. This feature provides excellent conductivity and heat transferability for reliable engine ignition and efficient combustion. Both spark plugs are designed with an alumina ceramic insulator that enables them to withstand high temperatures and helps to provide good electrical insulation. However, the BPR6ES insulator is slightly longer than that of the BPR5ES spark plug. Copper Core End result in any sigificant increase in resistance on our system is a stuffed Ignition Control Module (EZL) Many vehicle owners use BPR5ES spark plugs to fight poor fuel economy issues, as well as acceleration and emissions problems.

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This review differentiates between BPR5ES Vs. BPR6ES spark plugs, including their pros and cons. Therefore, while NGK stands as a reputable brand generally, you need the best model for optimal engine performance. High quality NGK spark plug which is designed using the latest technology to give optimum performance over the Lawnmowers entire rev. range 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.