Spark Plug

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1-24 of 1333 Results

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Free Next Day Delivery
Bosch Iridium Spark Plug 9616
$
7
99
  • Part # 9616
  • SKU # 417839
  • Notes: Gap is pre-set. Do not gap.
$
7
99
Notes: Gap is pre-set. Do not gap.
Free Next Day Delivery
Bosch Iridium Spark Plug 9602
$
7
99
  • Part # 9602
  • SKU # 256736
  • Notes: Gap is pre-set. Do not gap.
$
7
99
Notes: Gap is pre-set. Do not gap.
Bosch Iridium Spark Plug 9752
$
7
99
  • Part # 9752
  • SKU # 526555
  • Notes: Gap is pre-set. Do not gap.
$
7
99
Notes: Gap is pre-set. Do not gap.
Free Next Day Delivery
Bosch Iridium Spark Plug 9603
$
7
99
  • Part # 9603
  • SKU # 256738
  • Notes: Gap is pre-set. Do not gap.
$
7
99
Notes: Gap is pre-set. Do not gap.
Free Next Day Delivery
Bosch Iridium Spark Plug 9606
$
7
99
  • Part # 9606
  • SKU # 256742
  • Notes: Double iridium, Gap is pre-set. Do not gap.
$
7
99
Notes: Double iridium, Gap is pre-set. Do not gap.
Free Next Day Delivery
Bosch Iridium Spark Plug 9600
$
7
99
  • Part # 9600
  • SKU # 256751
  • Application: With California emission
    Notes: Double iridium, Gap is pre-set. Do not gap.
$
7
99
Application: With California emission
Notes: Double iridium, Gap is pre-set. Do not gap.
Free Next Day Delivery
Bosch Iridium Spark Plug 9651
$
7
99
  • Part # 9651
  • SKU # 256752
  • Application: With California emission
    Notes: Double iridium, Gap is pre-set. Do not gap.
$
7
99
Application: With California emission
Notes: Double iridium, Gap is pre-set. Do not gap.
Free Next Day Delivery
Bosch Iridium Spark Plug 9609
$
7
99
  • Part # 9609
  • SKU # 256745
  • Notes: Double iridium, Gap is pre-set. Do not gap. Original equipment is double platinum
$
7
99
Notes: Double iridium, Gap is pre-set. Do not gap. Original equipment is double platinum
Free Next Day Delivery
Bosch Iridium Spark Plug 9657
$
7
99
  • Part # 9657
  • SKU # 256759
  • Notes: Double iridium, Gap is pre-set. Do not gap.
$
7
99
Notes: Double iridium, Gap is pre-set. Do not gap.
Free Next Day Delivery
Bosch Iridium Spark Plug ZR6SII3320
$
11
99
  • Part # ZR6SII3320
  • SKU # 847037
  • Notes: Double iridium, Gap is pre-set. Do not gap.
$
11
99
Notes: Double iridium, Gap is pre-set. Do not gap.
Free Next Day Delivery
Bosch Iridium Spark Plug 96315
$
9
99
  • Part # 96315
  • SKU # 591439
  • Notes: Double iridium, Gap is pre-set. Do not gap.
$
9
99
Notes: Double iridium, Gap is pre-set. Do not gap.
Free Next Day Delivery
Bosch Iridium Spark Plug 96321
$
9
99
  • Part # 96321
  • SKU # 941056
$
9
99
Bosch Iridium Spark Plug 96328
$
22
99
  • Part # 96328
  • SKU # 1056626
$
22
99
Free Next Day Delivery
Bosch Iridium Spark Plug 9652
$
7
99
  • Part # 9652
  • SKU # 256754
  • Notes: Gap is pre-set. Do not gap.
$
7
99
Notes: Gap is pre-set. Do not gap.
Free Next Day Delivery
Bosch Iridium Spark Plug 96339
$
14
99
  • Part # 96339
  • SKU # 1043174
  • Notes: Double iridium, Hot climate or continuous high speed driving. Gap is pre-set. Do not gap. Original Equipment Is Iridium
$
14
99
Notes: Double iridium, Hot climate or continuous high speed driving. Gap is pre-set. Do not gap. Original Equipment Is Iridium
Free Next Day Delivery
Bosch Iridium Spark Plug 9622
$
7
99
  • Part # 9622
  • SKU # 514271
$
7
99
Free Next Day Delivery
Bosch Iridium Spark Plug 96320
$
17
99
  • Part # 96320
  • SKU # 1056627
$
17
99
Free Next Day Delivery
Bosch Iridium Spark Plug 9697
$
9
19
  • Part # 9697
  • SKU # 591448
  • Notes: Double iridium, Do not gap. Gap is not adjustable.
$
9
19
Notes: Double iridium, Do not gap. Gap is not adjustable.
Bosch Iridium Spark Plug 9605
$
7
99
  • Part # 9605
  • SKU # 256740
  • Notes: Double iridium, Do not gap. Gap is not adjustable.
$
7
99
Notes: Double iridium, Do not gap. Gap is not adjustable.
Free Next Day Delivery
Bosch Iridium Spark Plug 9607
$
7
99
  • Part # 9607
  • SKU # 256743
  • Notes: Do not gap. Gap is not adjustable.
$
7
99
Notes: Do not gap. Gap is not adjustable.
Free Next Day Delivery
Bosch Iridium Spark Plug FR7DII35V
$
9
99
  • Part # FR7DII35V
  • SKU # 847045
$
9
99
Free Next Day Delivery
Bosch Iridium Spark Plug 96302
$
9
99
  • Part # 96302
  • SKU # 591442
  • Notes: Double iridium, Gap is pre-set. Do not gap.
$
9
99
Notes: Double iridium, Gap is pre-set. Do not gap.
Free Next Day Delivery
Bosch Iridium Spark Plug 7434
$
19
99
  • Part # 7434
  • SKU # 686310
  • Notes: Gap is not adjustable
$
19
99
Notes: Gap is not adjustable
Free Next Day Delivery
Bosch Iridium Spark Plug 96307
$
7
99
  • Part # 96307
  • SKU # 591438
  • Notes: Double iridium, Gap is pre-set. Do not gap.
$
7
99
Notes: Double iridium, Gap is pre-set. Do not gap.

About

Spark Plug

Make rough idling, engine misfiring, or starting trouble a thing of the past with new spark plugs from AutoZone. We carry plugs for virtually every make and model at any spark plug heat range. Buy online for free next day delivery or pick up your plugs in an AutoZone near you.

Get your car running the way it used to with new copper, platinum, or iridium spark plugs from AutoZone. We carry the best brands at the right price—brands like ACDelco, Bosch, Denso, E3, Motorcraft, NGK, and more.

Here at AutoZone we make finding the right parts easy. If you find yourself wondering, “What spark plugs do I need?” simply enter your vehicle’s year, make, model, and engine at the top of this page, and we’ll find the right plugs for your vehicle. If you need Honda Civic spark plugs, just input your Civic’s information, and we’ll find parts that fit.

Spark plugs are crucial to your vehicle. Understanding them is crucial to vehicle maintenance. Learn more with our helpful guides below:
- Spark plug buyer's guide
- Bad spark plug symptoms
- How to change your spark plugs

Which makes and models do you have Spark Plugs available for?
We carry every major make and model. Whether you drive a Ford F-150 or a Smart Car, we have the parts for your vehicle. AutoZone is the best place to buy any parts you need for a tune-up.

Why should I replace my spark plugs?
The spark plug is possibly the most integral component of the spark-ignition combustion engine. Each one sits at the top of a cylinder head in your engine to combust fuel-air mixture and fire up your vehicle. Combustion occurs through the transfer of electrons across the spark gap.

The gap is the space between the curved L-shape of the ground electrode and the center electrode that runs through the center of the plug. As electrical current is supplied to the plug by the ignition coil or the magneto, a voltage difference builds up between the two electrodes.

Once the voltage is high enough, the current ionizes the gases in the fuel-air mixture, allowing the spark to travel across the gap from the center electrode to the ground electrode. The spark reaches temperatures around 60,000 Kelvin (That’s over 100,000 degrees Fahrenheit!)—hot enough to combust the fuel-air mixture.

Every time the plug sparks, some metal is removed from the electrode. This eventually wears out the spark plug. Plugs last right about 30,000 miles, and it is recommended to change them every 20-40,000 miles.

Do I have bad spark plugs?
Signs of bad plugs can be stalling, trouble starting, and engine misfires. Misfires lead to increased emissions, wasted gas, and reduced power—they can even overheat your catalytic converter. If your engine is misfiring, there is a good chance it’s time for new plugs. Don’t put your car at risk for more severe damage down the road. Buy online or stop by your local AutoZone today.