Mercedes Spark Plug Parts

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Mercedes S430
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$4.29
Reg
$4.47
List
$9.30
OEM
This updated plug replaces numerous original plugs including W7DC, WR7DC, W7DC0, and W7DTC version which are no longer available from Bosch. Pregapped for normal usage.
Mercedes 450SL, 300SE, 450SLC, 280SE, 300SEL, 280SL, 450SEL, 230SL, 350SL, 280SEL & more
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$2.59
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$2.70
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$2.53
OEM
Pregapped for normal usage. Not recommended for supercharged or turbo engines. Connectors to plug wires are permanently fixed, non-screw off.
Mercedes C230
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$4.39
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$4.57
List
$23.71
OEM
Pregapped for normal usage. Connectors to plug wires are permanently fixed, non-screw off.
Mercedes 380SL, 450SL, 560SL, 560SEL, 420SEL, 560SEC, 450SLC, 280SE, 450SEL, 380SE & more
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$5.09
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$5.30
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$11.00
OEM
Enhanced yttrium version, replaces W8DC, WR8DC, and W8DC0 versions. Pregapped for normal usage.
Mercedes 450SL, 420SEL, 450SLC, 500SEC, 500SEL, 230
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$2.29
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$2.39
List
$4.00
OEM
Bosch original equipment design with ultra-fine wire iridium center electrode and iridium-platinum tapered ground electrode deliver optimum performance and durability.
Mercedes E320, ML350, SL500, S500, ML320, C280, E55 AMG, S430, CLK320, E500 & more
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$8.99
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$9.36
List
$22.49
OEM
4 per car.
Mercedes C300, Sprinter 2500 RWD, GLC300, CLA250, Sprinter 2500 4WD, GLA250, E300, Metris, SLK300, GLC350e & more
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$16.49
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$17.18
List
$21.50
OEM
Mercedes E350, C300, S550, ML350, C230, GL450, GLK350, E550, C280, CLS550 & more
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$7.39
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$7.70
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$27.25
OEM
Mercedes E350, C300, S550, ML350, GL450, GLK350, GLE350, E550, CLS550, SL550 & more
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$12.29
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$12.80
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$24.50
OEM
Enhanced yttrium version. Updated version for original OE plugs F7LDCR, F7LTCR, and FR7LDC. Pregapped for normal usage.
Mercedes C230
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$3.69
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$3.84
List
$12.98
KIT FREE SHIPPING
This kit contains the spark plugs and wire set along with the special wire puller tool to give your ignition system a complete tuneup.
Mercedes SL500, S500, E55 AMG, S430, E500, E430, C43 AMG, ML500, CLK430, CLK500 & more
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$297.72
Reg
$310.13
List
$986.35
KIT
This kit contains all the OEM spark plugs and ignition coils to rejuvenate your ignition system.
Mercedes E350, C300, ML350, C230, GLK350, C280, C350, CLK350, SLK350, R350 & more
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$248.28
Reg
$258.63
List
$637.50
OEM
Pregapped for normal usage. Latest version replaces F8DC, FR8DC, and 7527 versions.
Mercedes E320, SL500, C230, 300E, S500, C280, 500SL, E500, 300SE, S320 & more
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$2.29
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$2.39
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$5.40
Pregapped for normal usage.
Mercedes 450SL, 560SL, 560SEL, 560SEC
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$2.99
Reg
$3.11
List
$15.00
OEM
Updated version of OE spark plugs F8DPER, F8DPP33, FR8DPP33+ and FR8DPP33. Pregapped for normal usage.
Mercedes E320, ML350, SL500, ML320, C280, E55 AMG, S430, CLK320, E500, C240 & more
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$6.19
Reg
$6.45
List
$9.00
KIT
This kit contains all the commonly replaced parts to give your Mercedes a complete tuneup.
Mercedes 450SL, 450SLC, 450SEL, 450SE
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$327.69
Reg
$341.34
List
$429.39
OEM
Mercedes S430
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$8.39
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$8.74
List
$14.27
OEM
Mercedes E350, ML350, GL450, GLK350, GLE350, GLS450, C350, C43 AMG, SLK350, E400 & more
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$18.09
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$18.84
List
$18.00
OEM
Mercedes C230, E55 AMG, SL55 AMG, S55 AMG, CL55 AMG, CLS55 AMG, G55 AMG, SLR McLaren, SLR MCLAREN
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$8.99
Reg
$9.36
List
$19.50
Bosch original equipment design with ultra-fine wire iridium center electrode and iridium-platinum tapered ground electrode deliver optimum performance and durability.
Mercedes C230, SLK230, CLK55 AMG, SLK55 AMG, C55 AMG, C32 AMG, SLK32 AMG
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$8.19
Reg
$8.53
List
$14.63

The average cost of a Mercedes spark plug is between $2.29 and $327.69.

Mercedes spark plugs are an essential part of the ignition system in any Mercedes vehicle. They are responsible for providing the spark needed to ignite the air/fuel mixture in the combustion chamber. The spark plugs are typically located in the cylinder head and consist of a threaded metal shell with a center electrode and a ground electrode. The spark plug is connected to the ignition system via a spark plug wire, which carries the high voltage spark to the spark plug.

The purpose of the spark plug is to ignite the air/fuel mixture in the combustion chamber. The spark plug is responsible for providing the spark that is needed to ignite the mixture inside the combustion chamber. The spark is created when the voltage from the ignition system is applied across the electrodes of the spark plug. This causes an electric arc to form between the electrodes, which in turn ignites the air/fuel mixture.

In addition to the spark plug, the ignition system in a Mercedes vehicle also contains other related parts. These include the ignition coil, distributor, spark plug wires, and the ignition control module. The ignition coil is responsible for transforming the low voltage from the battery into the high voltage needed to create the spark. The distributor is responsible for routing the high voltage to the correct spark plug. The spark plug wires carry the high voltage from the distributor to the spark plugs. Finally, the ignition control module is responsible for controlling the timing of the spark.

Signs of Faulty Mercedes Spark Plugs

Signs of faulty Mercedes spark plugs can include a misfiring engine, poor fuel economy, a decrease in acceleration, rough or unstable idle, engine stalling, or a check engine light. The spark plugs in a Mercedes are responsible for igniting the fuel-air mixture inside the engine, which then powers the vehicle. When the spark plugs become worn or corroded, they are unable to ignite the fuel-air mixture as efficiently, resulting in a decrease in engine performance.

  • A misfiring engine is one of the most common signs of faulty spark plugs. This occurs when the spark plugs are unable to ignite the fuel-air mixture in the engine, resulting in the engine missing out on a power stroke. This can cause a noticeable decrease in engine performance, as well as a rough or unstable idle.
  • Poor fuel economy is another symptom of faulty spark plugs. When the spark plugs are unable to ignite the fuel-air mixture efficiently, the engine is forced to burn more fuel to make up for the lack of power. This can result in a decrease in fuel economy, as the engine is using more fuel than necessary.
  • A decrease in acceleration is another sign of faulty spark plugs. When the spark plugs are unable to ignite the fuel-air mixture efficiently, the engine is unable to generate as much power. This can result in a decrease in acceleration, as the engine is unable to generate enough power to propel the vehicle forward.
  • Engine stalling is another symptom of faulty spark plugs. When the spark plugs are unable to ignite the fuel-air mixture efficiently, the engine is unable to maintain a consistent power output. This can result in the engine stalling or cutting out, as it is unable to generate enough power to keep the vehicle running.
  • Finally, a check engine light is another symptom of faulty spark plugs. When the spark plugs are unable to ignite the fuel-air mixture efficiently, the engine control unit (ECU) will detect the lack of power and trigger a check engine light. This is a warning sign that the spark plugs need to be replaced.

Types of Mercedes Spark Plugs

Mercedes vehicles are equipped with several different types of spark plugs, depending on the model and year.

The most common type of spark plug used in Mercedes vehicles is the conventional spark plug. This type of spark plug has a single electrode and is made from a copper core with a nickel-alloy outer shell. The conventional spark plug is designed to last up to 100,000 miles and is the most cost-effective option.

Another type of spark plug used in Mercedes vehicles is the iridium spark plug. This type of spark plug has a much smaller electrode than the conventional spark plug and is designed to last up to 150,000 miles. The iridium spark plug is more expensive than the conventional spark plug but offers greater durability and performance.

The final type of spark plug used in Mercedes vehicles is the double-platinum spark plug. This type of spark plug has two electrodes and is made from a platinum core with a nickel-alloy outer shell. The double-platinum spark plug is designed to last up to 200,000 miles and is the most expensive option.

No matter which type of spark plug you choose for your Mercedes vehicle, it is important to ensure that it is properly installed and maintained. This will help to ensure optimal performance and fuel efficiency.


Mercedes spark plugs typically last between 30,000 and 100,000 miles, depending on the type of spark plug and driving conditions. Spark plugs are the most important part of the ignition system and are responsible for igniting the air-fuel mixture in the combustion chamber. Over time, spark plugs wear out and need to be replaced. It is recommended to replace spark plugs every 30,000 miles as a preventative measure. If you drive in extreme conditions, such as in heavy traffic or in extreme temperatures, it may be necessary to replace the spark plugs more frequently.

At AutohausAZ, we understand the importance of having the best Mercedes spark plugs for our customers. Our selection of spark plugs ensures that our customers always have access to the highest quality parts. We also provide our customers with unbeatable prices, so they can get the parts they need without breaking the bank. Our team of experts are always available to answer any questions that customers may have, so they can make the best decision for their Mercedes. Shopping with AutohausAZ also provides our customers with peace of mind, since we offer a one-year warranty on all of our spark plugs.

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