Though both come from the same brand NGK, what is the difference between BPR4ES and BPR5ES? The major difference between the NGK BPR5ES and NGK BPR4ES series of the spark plug is in their particular terminal type. There are many more differences, including dimension, features, durability, and price.
NGK spark plugs are renowned spark plugs around the world for their quality. Though there are several series of NGK spark plugs in the market, in this article, we will only discuss the differences between the NGK BPR4ES Vs BPR5ES. Stay tuned to know more.
NGK BPR4ES Vs BPR5ES: Differentiation At A Glance
| Key Differences | NGK BPR4ES | NGK BPR5ES |
| Terminal type | Has a fixed and solid terminal | Has a nut-style type terminal |
| Dimension | 3.43 x 1.69 x 0.94 inches | 3.3 x 1 x 0.8 inches |
| Features | Has fewer features | Has more features |
| Durability | Doesn’t last as long as the NGK BPR5ES | Lasts longer |
| Best Use | Best suitable for Kawasaki, Hustler, Spartan engines | It Fits Kawasaki, Husqvarna, and Honda engines |
| Price | Expensive | Cheaper |
Similarities Between NGK BPR4ES And NGK BPR5ES
While there are a lot of differences between the NGK BPR4ES spark plug and the NGK BPR5ES spark plug, there are still some similarities between them. The table below will show you those similarities.
| Major Similarities | NGK BPR4ES | NGK BPR5ES |
| Material | Nickel, Metal | Nickel, Metal |
| Core material | Copper | Copper |
| Comes with triple gasket sealing | Yes | Yes |
| Features trivalent metal plating | Yes | Yes |
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In the below guide, you will find out the difference between BPR4ES and BPR5ES in detail.
Terminal Type
People who want to know “What is the difference between NGK BPR4ES and BPR5ES?”, need to know the difference between their terminal types. The NGK BPR4ES has a fixed and solid terminal. It has a permanent connection.
On the other hand, the terminal of NGK BPR5ES is a nut-style type terminal. It is a standard spark plug that the connection is removed, unlike the fixed one. So, you need to screw the NGK BPR5ES spark plug to mount in its place.
Dimension
The dimension of the NGK BPR4ES spark plug is 3.43 x 1.69 x 0.94 inches. Its weight is 4.2 ounces. On the other hand, the dimension of the NGK BPR5ES spark plug is 3.3 x 1 x 0.8 inches. Its weight is 0.32 ounces. 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.
Features
The NGK BPR4ES spark plug comes with trivalent metal plating that provides superior anti-seizing and anti-corrosion properties. It also has corrugated ribs, which prevent flashover. This spark plug has a pure alumina silicate ceramic insulator, which provides better heat transfer and superior strength.
You will also find the solid copper core material in this spark plug, which provides superior heat conductivity, dissipation, and a wider heat range. Lastly, the triple seal feature of the NGK BPR4ES spark plug prevents any gas leakages. On the other hand, the NGK BPR5ES comes with cold-rolled threads that prevent damage to the cylinder head.
It also has triple gasket sealing features like the NGK BPR4ES, which virtually removes gas leakages past the shell. Other features of the NGK BPR5ES like the copper core and trivalent metal plating are the same as the NGK BPR4ES. However, we can say that the NGK BPR4ES spark plug has more features than the NGK BPR5ES spark plug.
Durability
When it comes to durability, the NGK BPR5ES spark plug wins the race. The NGK BPR5ES spark plug is made for longer life and supreme performance. The NGK BPR4ES sparks hotter to aid it to start when the tractor is cold.
However, the NGK BPR5ES spark plug does not spark as hot as the NGK BPR4ES spark plug. A user said in a forum in Lawn Care Forum regarding this,
“The only difference between these two plugs is the “5” is a colder plug.”
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, we can say that the NGK BPR5ES spark plug lasts longer compared to the NGK BPR4ES spark plug.
Price
The price of NGK BPR4ES is higher compared to the price of NGK BPR5ES.
Generally, the price of the NGK BPR4ES spark plug ranges from 3$ to 10$. On the other hand, the NGK BPR5ES spark plug price ranges from 2$ to 6$.
So, when differentiating between the NGK BPR5ES and BPR4ES and you are looking for a cheaper option, go for the NGK BPR5ES spark plug.
Frequently Asked Questions (FAQs)
What spark plug is equivalent to BPR4ES?
Many spark plugs are equivalent to the NGK BPR4ES spark plug, and you can use them instead of this spark plug. The most common of them are Autolite 4265 and Champion RN14YC spark plugs. Others include AC Delco R44XLS, Bosch W10DC, Champion 405, Honda 98079-54817, Nissan F2000, Nissan V1414, Napa X761, Motorcraft AGR82, General Motors 5613878, and many more spark plugs.
What is the difference between NGK BPR4ES and BPR6ES?
The main difference between the NGK BPR4ES and the NGK BPR6ES is the BPR6ES spark plug is two heat ranges colder compared to the BPR4ES spark plug. Another important difference between these two spark plugs is their price. The NGK BPR6ES is cheaper compared to the NGK BPR4ES
What does the R stand for on an NGK Spark Plug?
The “R” on an NGK spark plug indicates that it is a resistor-type spark plug. This types of spark plugs decrease the interference quantity of the radio frequency that might cause static on the radio and ignition misfires. A resistor-type spark plug has an inbuilt resistor that decreases the noise level of the ignition made when you start your car.
Which One Should Be Your Pick?
Finally, we have come to the situation where we need to pick one between the NGK BPR4ES spark plug and the NGK BPR5ES spark plug. Though in the end, it comes to your preference, we will still recommend you go for the NGK BPR5ES spark plug. It is because the NGK BPR5ES spark plug is cheaper, lightweight, and lasts longer than the NGK BPR4ES spark plug.
However, if you are looking for many features, you should go for the NGK BPR4ES spark plug as it has more features than the NGK BPR5ES spark plug.
Nevertheless, the final choice is yours. We suggest you consider the aspects discussed in this NGK BPR4ES vs BPR5ES article before selecting one between them.