‘What! It’s out of oil again?’ That’s your Stihl chainsaw which you had refilled a few days back. Now it’s drinking oil like a buffet.
It wasn’t always like this, you might ask yourself. Yes, you are right. The problem isn’t with the chainsaw but the spark plug because the best spark plug for Stihl chainsaw can keep the machine running for weeks.
Well, it’s clear that you need a new one. Choosing a suitable spark plug can be tricky with all the dimensions, materials, and stuff.
To make things easier, we bring you some top-notch picks suitable for your Stihl chainsaw. Sit down and have a quick look at these gems.
Top 4 Stihl Chainsaw Spark Plug – Table
What Size Spark Plug For Stihl Chainsaw?
Though the options were once limited, now you can find a variety of spark plugs compatible with your Stihl chainsaw. One way to ensure the size is to follow the user’s manual.
Besides, you can go for plugs with 14 mm thread size as most of the chainsaws from Stihl use them.
The spark plug gap is usually 0.8 mm. Be sure that the dimensions check out perfectly, as there may be an exception with some models.
Unless you are a mechanic yourself, it’s pretty hard to get hold of all the fancy mechanical terms mentioned along with the spark plugs. Have a look at some of the options you can go for –
1. NGK (6703) BPMR7A Spark Plugs
Specifications
- Thread Diameter: 14 mm
- Thread Pitch: 1.25 mm
- Material: Nickel
- Heat Range: 7
Our first pick on the list is a workhorse from NGK. It’s one of those brands that needs no introduction. Let’s see what their trusted series BPMR7A has to offer.
This Stihl NGK spark plug has been designed to offer you the performance and longevity you have been craving for. Well, you won’t get anything extraordinary in this range, but these plugs will get the job done.
It features a trivalent metal coating with optimum corrosion resistance and anti-seizing properties. As a result, you won’t be looking for DIY videos next time you try to pull out your spark plug.
The corrugated ribs in the plugs do an effective job of preventing flashovers. This prevents misfires and will make your chainsaw roar at the first attempt.
Its pure alumina silicate ceramic insulator can stand strong. This offers superior strength to tackle heavy loads and ensure seamless heat transfer for improved performance.
It’s not all sunshine here, as these plugs have some shortcomings too. The nickel construction can be damaged and needs more voltage to perform. But this is the case with most budget picks, some sacrifices you have to live with.
Efficient heat removal is an effective factor for spark plug health, and the copper core ensures it’s done effortlessly. Besides, you’ll get good mileage as they boast triple seals to prevent leakage.
Highlighted Features
- Offers superior performance at a budget range
- The trivalent metal coating offers durability for longer service life
- Packs anti-seizing capabilities for easy replacement
- Corrugated ribs prevent misfires for user comfort
- Boasts copper core for seamless heat transfer and thus better performance
Downsides
- Nickle construction isn’t the most durable
- Requires more voltage compared to expensive metals
2. 5 Pack BM6A Spark Plugs
Specifications
- Reach: 0.375 in
- Seat Style: Gasket
- Material Type: Metal
- Thread Size: 14 mm
- Wrench Diameter:3/4 in
If you are having trouble looking for a replacement for your Stihl spark plugs, you better look at this one.
These handy plugs can be used as replacements for stock ones or also can be used as alternatives for NGKs. It’s a good option if you are not satisfied with the current plug powering your chainsaw.
You don’t need to worry about compatibility as the plugs fit a wide variety of engines such as 47, 49, or 50 cc two-stroke engines. As a result, what you are getting is an easy fix for the faulty plug.
What’s the most fascinating about these gems is the budget they come at. You can have these at a rock bottom range and still manage to get plenty of hours out of them.
It’s an ideal pick if you are looking for backup or emergency plugs for your chainsaw because they cost less and come compatible with various engines and models.
Highlighted Features
- Ensures durable performance
- Fits most chainsaw engines and thus offers peace of mind
- Works as an ideal replacement for stock or expensive plugs
Downsides
- Isn’t the most power-packed
3. HIFROM 5PCS Spark Plug
Specifications
- Fits models: MS250, MS230, MS240 etc
- Package includes: 5 pcs SPARK PLUG
This spark plug has caught our attention due to the high build quality and the engineering put on display. With an all-around performance, this plug from HIFROM can be termed the best spark plug for Stihl chainsaw.
Looking for aftermarket parts is difficult and tiresome. The same goes for spark plugs. You need to look for the model and size to match right.
This plug comes with high-end manufacturing and top-grade material for an ideal replacement as a solution to these issues.
It fits the most popular chainsaw models such as the MS250, MS230, MS240, MS260, and so on. As a result, you can have a few of these plugs stored in your garage and fit them in your chainsaw whenever there is a need.
The compatibility makes your engine run smoothly, but make sure you don’t get the non-original one. Once the plug fits right, you’ll have superior performance for both personal and factory usage.
Highlighted Features
- Aftermarket plugs fit most models with ease
- Features high-end manufacturing for durable performance
- Comes in a pack of five, ensuring back-ups during heavy usage
- Ideal for both personal and heavy-duty usage in factory
Downsides
- Needs to be checked for compatibility
4. NGK (6703) BPMR7A SOLID
Specifications
- Thread Size: 14 mm
- Thread Pitch: 1. 25 mm
- Seat Type: Gasket
- Material: Nickel
Next up on the list is another baller from NGK. The BPMR7A SOLID has been a top performer for chainsaws, yet another budget pick that will keep your chainsaw running at full steam.
Despite being a budget pick, there are no compromises in performance and durability. NGK has kept its promise as a value-for-money brand, which is no exception.
What you will find extremely handy is the trivalent metal coating the plugs come with. Corrosion can be a big letdown for heavy-duty spark plugs. This layer keeps corrosion at bay. Besides, the layer also offers anti-seizing properties that extend the plug life.
Thanks to the corrugated ribs that plug boasts, your morning won’t be paused just because the chainsaw won’t fire up. The ribs reduce the chances of flashovers and ensure a safe and instant start making your work easier.
The plug showcases the brilliant engineering of NGK spark plugs for Stihl. Its pure alumina silicate ceramic insulator allows superior heat transfer than regular plugs, ensuring better load-carrying capacity for heavy-duty work.
This all-rounder doesn’t disappoint in terms of heat management too. The spark plug packs a copper core to effectively remove the heat of the system.
Heat management and the improved mileage you will get from the triple seals make this bomber a crazy value for the bucks.
Highlighted Features
- Offers all-round performance at a budget price
- The trivalent metal coating ensures a superior build that lasts
- Anti-seizing properties keep the spark plug in pristine condition
- Corrugated ribs make startups a breeze
- Copper core ensures better heat management and thus enhanced performance
Downsides
- Isn’t as durable as high-end spark plugs
- Runs at a higher voltage
Things To Consider While Buying Spark Plug For Stihl Chainsaw
Spark plugs come at all prices, depending on the material. It’s the core components used that sets one apart from the other.
Below is a short guide about the materials to help you pick the suitable plug within your budget.
Copper – Budget Pick
Copper is one of the earliest materials used to construct spark plugs. Once they were the only option for spark plug engines, they are now considered backdated and rusty. But you can still go for copper spark plugs if budget is the only concern.
Platinum – Economic Pick
Platinum plugs can a considered a slight improvement over copper ones. They offer better performance and double the longevity. These plugs run at low temperatures and thus have better wear resistance.
Double Platinum – Mid-range Pick
These are the most suitable picks to balance budget and performance. They offer the latest technology and will go the distance if used with care.
Double platinum plugs are a no-brainer if you are looking for a daily driver without spending huge.
Iridium – Premium Pick
Spark plugs consisting of Iridium construction can be considered king in performance, efficiency, and durability.
They boast top-of-the-line innovation in construction and performance and will offer you breathtaking service. Yes, they will cost more, but you will be more than satisfied with the purchase.
Read Also: Ms 271 Oil Adjustment Screw
Now that you know the necessary insights about the spark plugs, below is a step-by-step guide to remove them. Follow the steps below to take the old spark plug out of your Stihl chainsaw –
At first, you need to unlock the shroud of your Stihl chainsaw using a flathead screwdriver. Gently remove the shroud from the chainsaw.
Step 2 – Remove Air Filter And Rubber Cap
Then you need to lift the air filters that stay on top of the machine. Carefully remove the rubber cap from the spark plug.
Now take a 19 mil hex socket spanner. Use the spanner to loosen the spark plug. Simply remove the spark plug by hand, and you are good to go.
Final Words: Best Spark Plug For Stihl Chainsaw
Phew! This wraps up our discussion about the best spark plug for Stihl chainsaw. These are some of the most budget-friendly and reliable spark plugs you can have right now.
If you are still hesitant to change the faulty spark plug, don’t because it will worsen things. The inefficient plug you are using for the chainsaw can cost you hundreds in oil and repairs.
So, it’s always wise to use spark plugs in good shape and well-functioning. Install any of these ballers, and have a good day cutting down snow without hiccups.
FAQ
When Should I Change My Stihl Spark Plug?
Changing your Stihl spark plug after every 100 hours of service time is recommended.
How Do You Clean A Stihl Chainsaw Spark Plug?
To clean the firing end, you can use alcohol of 90% strength, mineral spirit, or even carburetor cleaner.
What Happens If You Don’t Change Your Spark Plugs?
Using bad spark plugs results in incomplete combustion and thus poor performance.
What Will Changing My Spark Plugs Do?
Having your spark plugs in good shape will improve the fuel economy of the machine and thus save you money.
