Spark Plugs

Spark plugs are an essential component of an internal combustion engine. Their primary function is to ignite the fuel in the engine's combustion chamber, which is why they are critical to the engine's performance. As a result, it's essential to understand the signs of failure to ensure that your engine runs smoothly.

How to Spot Faulty Spark Plugs

Here are some signs that indicate a potential problem with your spark plugs:

  • Engine misfires: If your engine misfires, it's an indication that one or more of your spark plugs aren't working correctly. Misfires are usually noticeable as a jittery or choppy sound coming from the engine.
  • Rough idling: If your vehicle starts to show a rough or shaky idle, it could be due to spark plug misfires. The rough idling occurs when combustion is not happening at the right time or is happening unevenly.
  • Slow acceleration: When the spark plugs aren't functioning correctly, the acceleration of the vehicle may be sluggish. This is because the engine won't be able to produce the necessary power to move the car forward.
  • Poor fuel economy: If you notice a dip in your fuel mileage, it could be due to worn-out spark plugs. Worn-out spark plugs can't ignite the fuel in the engine efficiently, causing more fuel to be used.
  • Engine surging: Inconsistent acceleration is when the car quickly speeds up or slows down drastically. It could be due to vehicle systems like fuel and transmission, but it could also be caused by faulty spark plugs.
  • Hard starting: Worn-out spark plugs can cause the engine to have a hard time starting or not start at all. As a result, it may take longer to start your car than usual.
  • Choose Genuine BMW Spark Plugs and Save Money!

    In summary, failing spark plugs can cause engine performance problems and lead to expensive repairs if not addressed promptly. At the first sign of a problem, make sure to replace them if necessary. With proper maintenance, your spark plugs will keep the engine running smoothly, ensuring that your vehicle performs efficiently and reliably for years to come. When you do need new spark plugs, shop our online auto parts inventory. We sell the real-deal spark plugs that BMW designed for your model, guaranteeing the fit and performance you want. Buy today and we'll get your order sent right out

    12120039634 - : Spark Plug for BMW: M2, M3, M4, M5, M6, M6 Gran Coupe, X4, X5, X6 Image

    Spark Plug

    BMW 12-12-0-039-634
    4.4L, with M6. 3.0L, with M4. 3.0L, with m model, 2017-21. 3.0L, with M3. 4.4L turbo (s63t). 4.4L, with m model. 3.0L, m40xi.
    $28.26
    MSRP $40.25
    Save $11.99
    29.8% Off
    12120040551 - : Spark Plug for BMW: 230i, 230i xDrive, 320i, 320i xDrive, 330e, 330i, 330i GT xDrive, 330i xDrive, 340i, 340i GT xDrive, 340i xDrive, 430i, 430i Gran Coupe, 430i xDrive, 430i xDrive Gran Coupe, 435i, 435i xDrive, 440i, 440i Gran Coupe, 440i xDrive, 440i xDrive Gran Coupe, 530e, 530e xDrive, 530i, 530i xDrive, 540i, 540i xDrive, 640i xDrive Gran Turismo, 740e xDrive, 740i, 740i xDrive, M240i, M240i xDrive, X1, X2, X3, X4 Image

    Spark Plug

    BMW 12-12-0-040-551
    2.0, 3.0L gas, 3.0L. 3.0L, without M4. 2.0L, 2017-21. 3.0L, without M3. Without m model. Sedan/wagon, 2.0L gas.
    $22.82
    MSRP $32.50
    Save $9.68
    29.8% Off
    12120054451 - : Spark Plug for BMW: M5, M8, M8 Gran Coupe, X5, X6 Image

    Spark Plug

    BMW 12-12-0-054-451
    4.4L, with M8. With M5, 2020-23. 4.4L, 2017-19, with M5. 4.4L twin turbo, m model.
    $21.74
    MSRP $30.96
    Save $9.22
    29.8% Off
    12120057704 - : Spark Plug for BMW: 750i xDrive, 760i xDrive, Alpina B7, Alpina B8 Gran Coupe, Alpina XB7, M5, M5 Touring, M550i xDrive, M8, M850i xDrive, M850i xDrive Gran Coupe, X5, X6, X7, XM Image

    Spark Plug

    BMW 12-12-0-057-704
    4.4L twin turbo, m model. 4.4L twin turbo, 2023-26. Without M5, 2020-23. 4.4L twin turbo, 2019-22, m50i. 4.4L twin turbo, m60i.
    $21.74
    MSRP $30.96
    Save $9.22
    29.8% Off
    12129061870 - : Spark Plug for BMW: 750iL, 850Ci, 850i Image

    Spark Plug

    BMW 12-12-9-061-870
    $17.15
    MSRP $21.17
    Save $4.02
    19% Off
    12129064617 - : Spark Plug for BMW: 325i, 325is, 328i, 328is, 525i, 528i, 540i, 740i, 740iL, Z3 Image

    Spark Plug

    BMW 12-12-9-064-617
    Vendor:bosch. Vendor #f8ldcr. 740i & 740iL.
    $17.15
    MSRP $21.17
    Save $4.02
    19% Off
    12120022902 - : Spark Plug for BMW: M3, Z3, Z4 Image

    Spark Plug

    BMW 12-12-0-022-902
    Vendor:NGK. Vendor #dcpr8ekp.
    $30.79
    MSRP $38.02
    Save $7.23
    19% Off
    12120037244 - : Spark Plug for BMW: 1 Series M, 135i, 335i, 335i xDrive, 335is, 335xi, 528i, 528i xDrive, 528xi, 535i, 535i xDrive, 535xi, 740i, 740Li, X6, Z4 Image

    Spark Plug

    BMW 12-12-0-037-244
    Without diesel, 740 models. 3.0L, bosch, 335is. Without 335d, M3, with turbo.
    $17.39
    MSRP $24.77
    Save $7.38
    29.8% Off
    12120040581 - : Spark Plug for BMW: 550i, 550i GT, 550i GT xDrive, 550i xDrive, 650i, 650i Gran Coupe, 650i xDrive, 650i xDrive Gran Coupe, 750i, 750i xDrive, 750Li, 750Li xDrive, Alpina B7, Alpina B7 xDrive, Alpina B7L, Alpina B7L xDrive, X5, X6 Image

    Spark Plug

    BMW 12-12-0-040-581
    Vendor:bosch. Vendor #zr5tpp339. Without diesel, 750 models, 760Li, 750 models. 4.4L, without m model. 4.4L turbo.
    $21.74
    MSRP $30.96
    Save $9.22
    29.8% Off
    12122357197 - : Spark Plug for BMW: i3, i3s Image

    Spark Plug

    BMW 12-12-2-357-197
    $14.38
    MSRP $20.48
    Save $6.10
    29.8% Off
    12125A4EF60 - : Spark Plug for BMW: M2, M3, M4, X3, X4 Image

    Spark Plug

    BMW 12-12-5-A4E-F60
    With M4. With M3. 3.0L, m, m competition. 3.0L, with m.
    $28.26
    MSRP $40.25
    Save $11.99
    29.8% Off
    12129061867 - : Spark Plug for BMW: M5 Image

    Spark Plug

    BMW 12-12-9-061-867
    $30.79
    MSRP $38.02
    Save $7.23
    19% Off

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