This BDFHYK 5574 spark plug set is intended for selected lawn mower, trimmer, and small garden engine applications that use the listed 5574 or BPMR8Y-style plug reference. Before ordering spark plugs, compare the old plug number, thread size, reach, seat style, and engine requirement. This small-engine service set is for ignition maintenance when the original plug is worn, fouled, damaged, or difficult to start with.
| Application Type | Compatible When | Fitment Check |
|---|---|---|
| Lawn mower engines | The engine manual or removed plug matches 5574 or BPMR8Y-style reference. | Confirm thread size, reach, seat type, terminal style, and plug gap requirement. |
| Trimmer and handheld garden engines | The original plug number matches the listed reference. | Compare the old plug directly before ordering because similar tools may use different plugs. |
| Small garden equipment engines | The equipment service information calls for 5574, BPMR8Y, or an equivalent specification. | Check heat range reference, terminal design, and seat type before installation. |
Fitment note: This page is for small-engine spark plug service, not general automotive fitment. Do not order by equipment type alone; compare the removed plug or equipment manual first.
Worn plugs can make a lawn mower or garden engine hard to start, slow to respond, rough at idle, or unstable under load. Plug fouling can also happen when the air filter is dirty, the fuel mixture is incorrect, or the engine is stored with old fuel. Inspect spark plugs before assuming the ignition coil, carburetor, or fuel system is the only cause.
Install spark plugs only on a cool engine and avoid cross-threading the cylinder head. If a new plug does not solve a no-start issue, continue diagnosis by checking fuel quality, air filter condition, compression, safety switches, and ignition output. This BDFHYK 5574 set is an OE-style aftermarket replacement spark plug option for compatible small engines.
BDFHYK 10PCS Spark Plugs 5574 for Lawn Mower Garden Engines
These plugs work great as an upgrade from the factory copper electrode, works very smoothly and installation was a breeze! Factory OEM fit, very affordable, strong contact, and very durable. Exact replacement! Highly compatible. Highly recommend iridium electrode!
These plugs work great as an upgrade from the factory copper electrode, works very smoothly and installation was a breeze! Factory OEM fit, very affordable, strong contact, and very durable. Exact replacement! Highly compatible. Highly recommend iridium electrode!
They work. Gap was correct on arrival. They are functioning as intended for a 2014 Dodge Dart SXT 2.4l. They have absolutely no markings on them. Makes me question how the manufacturer knows which plugs are which if there are zero markings on them?
Spark plugs fit exactly for my Chrysler Town n Country fixed the issues with misfires now Running Great ??
Great product, perfect fit, great value .
Great price,mhad to regap all of them, my truck calls for 035, these came 042 to 036 lol.
Satisfied Customer
good Plugs :-)
These iridium spark plugs were a perfect fit for my 2011 Toyota RAV4. The engine starts faster and runs much smoother now. I noticed better performance and improved fuel efficiency right away. Great quality and easy to install. Highly recommended
Excelente producto! Se los recomiendo 100 % lastima que ya no los tengo a mano pues a penas llego el producto lo usamos en mi auto y quedo como nuevo !!
Had no problem with these in My 2019 Chevy Equinox 1.5 liter. Still goig strong.
Work great
Installed them in a 3.7 Jeep and it runs perfectly now. 1000 miles and counting.
Installed them in a 3.7 Jeep and it runs perfectly now. 1000 miles and counting.
These spark plugs worked perfectly in my husband's car. The engine runs smoother, starts quickly, and we have had no problems at all since installing them. The quality is excellent, and they were easy to install. Great performance for the price. We are very happy with this purchase and would definitely buy them again!
Good quality.
Item as described. Fast shipping. Good price.
Good price, and fit perfectly for my 2015 Nissan Altima. The old ones had 104,000 miles on them.
These spark plugs fit my automobile and were a also a great price
Performance is very similar to the name brand spark plugs. It costs half the amount. My 2013 Corolla is running very smoothly after installation.
They are spark plugs, they work.
They are spark plugs, they work.
Good plugs may have to adjust the gap for your Rav4 they came slightly off but still recommend
Seems like they worked perfectly
They are great spark plugs that are correctly gapped. Toyota RAV4 now runs great.
Good product
Work great. Pre gapped. Took old out and put these in. Runs beautifully.
Excelente
They work very well in my car, thanks
All plugs were in good shape. Quality looks good. Fired right up and drives fine
