How to inspect a spark plug for issues such as bridged gaps, deposit buildup, oil fouling, carbon fouling, normal burning, pre-ignition, overheating, and fused deposits on Ford Explorer?

Verify that the spark plug shows no bridged gap by examining the area between electrodes while looking for any deposits that restrict the gap caused by oil or carbon fouling. It is essential to clean the spark plug when required. The spark plug may show oil fouling through wet black deposits on specified areas mainly caused by faulty rings and pistons along with valve to guide clearance errors and worn or loose bearings. Repair all oil leak sources before installing a new spark plug. Carbon fouling can be identified when black, dry, fluffy carbon accumulates on insulator tips and exposed shell surfaces and electrodes because of incorrect heat range spark plugs or blocked air filters or rich fuel mixtures or abnormal idling behavior; cleaning the plug fixes such contamination. The inspection of normal burning requires you to look for light tan or gray materials on the firing tip. A Heli coil or improper installation of the insert in spark plug threads will require a new spark plug along with engine damage analysis if the inspector detects electrode melting and insulator damage alongside metallic deposits. These signs could be linked to incorrect ignition timing, fuel problems, or unauthorized Heli coil interference. Overheating detection reveals white or light gray spots along with bluish burnt electrode appearance due to engine overheating or using wrong fuel along with loose plugs or improper heat range or weakened fuel pressure or off-time events requiring new spark plug installation. Drilled deposits affecting spark plugs should be inspected through melted or spotty formations that look like bubbles or blisters caused by abrupt acceleration before deciding whether to clean the plug.

How to service and repair spark plugs on Ford Explorer?

Begin testing spark plugs by disconnecting wires from the spark plugs before pulling out the spark plugs. Clear the spark plug well by blowing compressed air before taking out the spark plugs. Normal operating procedure requires using a previously installed original spark plug only in the cylinder it came from but fresh spark plugs may be added to any cylinder. The service begins with spark plug wire removal after which you should inspect the plugs before using a suitable tool to measure and adjust the spark plug gap appropriately. Perform the opposite steps for spark plug installation after completion of removal.

OEM Ford Explorer Spark Plug

Ignition Spark Plug

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11 Spark Plugs found

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Ford Explorer Spark Plug Part Number: PZK-1F
$10.25 MSRP: $20.73
You Save: $10.48 (51%)
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Product Specifications
- Replaced by: PZK-1F-X
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2006-2008 Ford Explorer | Eddie Bauer, Limited, XLT | 8 Cyl 4.6 L GAS
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Ford Explorer Spark Plug Part Number: CYFS-12Y-T6
$5.12 MSRP: $7.93
You Save: $2.81 (36%)
Ships in 1-3 Business Days
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Product Specifications
- Replaces: CYFS-12Y-T5, CYFS-12F-5X, SP-586, BR3Z-12405-A, CYFS-O92-FT, CYFS-12F-5, SP-520, SP-520-X
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2011-2023 Ford Explorer | Base, Limited, Limited Hybrid, Platinum Hybrid, XLT | 6 Cyl 3.3 L FULL HYBRID EV-GAS (FHEV), 6 Cyl 3.5 L GAS
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Ford Explorer Spark Plug Part Number: AGSF-44F-MX
$5.11 MSRP: $8.29
You Save: $3.18 (39%)
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Product Specifications
- Replaces: AGSF-44F-M
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1995-1996 Ford Explorer | Eddie Bauer, Expedition, Limited, Sport, XL, XLT | 6 Cyl 4.0 L GAS
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Ford Explorer Spark Plug Part Number: HJFS-24FP-X
$9.73 MSRP: $15.05
You Save: $5.32 (36%)
Ships in 1-3 Business Days
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Product Specifications
- Replaces: SP-509, HJFS-24FP
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2008-2010 Ford Explorer | Eddie Bauer, Limited, XLT | 8 Cyl 4.6 L GAS
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Ford Explorer Spark Plug Part Number: CYFS-12-YT4X
$11.64 MSRP: $18.02
You Save: $6.38 (36%)
Ships in 1-3 Business Days
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Product Specifications
- Replaces: CYFS-12-YT3, CYFS-12F-3, SP-580, CYFS-12-Y3, CYFS-12-YT4, SP-528, SP-512-A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2013-2019 Ford Explorer | Platinum, Sport | 6 Cyl 3.5 L GAS
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Ford Explorer Spark Plug Part Number: CYFS-12Y-PCTX
$11.48 MSRP: $17.76
You Save: $6.28 (36%)
Ships in 1-3 Business Days
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Product Specifications
- Replaces: CYFS-12Y-PC, CYFS-12Y-PCT, SP-527, SP-550, CYFS-12Y-2
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2012-2019 Ford Explorer | Base, Limited, XLT | 4 Cyl 2.0 L GAS, 4 Cyl 2.3 L GAS
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Ford Explorer Spark Plug Part Number: AGSF-32P-MX
$6.04 MSRP: $9.35
You Save: $3.31 (36%)
Ships in 1-3 Business Days
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Product Specifications
- Replaces: AGSF-32P-M, AGSF-32P-MF4, SP-493
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2002-2005 Ford Explorer | Eddie Bauer, Limited, NBX, XLT, XLT Sport | 8 Cyl 4.6 L GAS
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Ford Explorer Spark Plug Part Number: AGSF-32F-MX
$5.41 MSRP: $8.36
You Save: $2.95 (36%)
Ships in 1-3 Business Days
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Product Specifications
- Replaces: AGSF-32F-SM, AGSF-32F-M, SP-470-X, SP-470, SP-432, AGSF-32F-SMX, AWSF-32F-
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1996-2001 Ford Explorer | Eddie Bauer, Limited, XLS, XLT | 8 Cyl 5.0 L GAS
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Ford Explorer Spark Plug Part Number: AGSF-24N-X
$4.75 MSRP: $7.35
You Save: $2.60 (36%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Replaces: SP-412, AGSF-24N
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2006-2010 Ford Explorer | Eddie Bauer, Limited, XLS, XLT | 6 Cyl 4.0 L GAS
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Ford Explorer Spark Plug Part Number: AGSF-22F-MX
$5.52 MSRP: $8.76
You Save: $3.24 (37%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Replaces: SP-500, AGSF-22F-M
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1997-2005 Ford Explorer | Eddie Bauer, Limited, NBX, Postal, Sport, XL, XL Fleet, XLS, XLS Sport, XLT, XLT Sport | 6 Cyl 4.0 L FLEX, 6 Cyl 4.0 L GAS
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Ford Explorer Spark Plug Part Number: CYFS-12Y-RT3
$11.75 MSRP: $18.18
You Save: $6.43 (36%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Replaces: CYFS-12Y-PT, CYFS-92-YPT, CYFS-092-YPT
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2020-2023 Ford Explorer | Base, King Ranch, Limited, Platinum, ST, ST-Line, Timberline, XLT | 4 Cyl 2.3 L GAS, 6 Cyl 3.0 L GAS

Ford Explorer Spark Plug

OEM Spark Plug boasts unmatched quality. Each part goes through full quality checks. They adhere to Ford's official factory standards. These steps remove flaws and inconsistencies. So you can get Spark Plug with long life and a perfect fit. Come to our website and find genuine Ford Explorer parts. We keep a wide inventory of OEM Explorer parts at the highly affordable prices. It's easy to search, compare, and pick what you need. You'll love the clear info and simple checkout. We offer top-rated customer service, and we reply fast. We also ship promptly to ensure your order arrives on time.

As discussed, the Spark Plug is vital in igniting the Air fuel mixtures that are required for burning inside the Ford Explorer engine. The Spark Plug is used to facilitate this procedure since it is responsible for introducing an electric current from the ignition system into the combustion chamber so that a spark can be produced to start up this procedure and maintain the steady running of the engine. It is recommended that the Spark Plug be replaced at least once in a while, this since worn out spark plugs can also display signs such as low power, poor fuel economy, and rough running. Different Spark Plugs have been used in Ford Explorer models in the past and these include, spark plugs with multiple ground electrodes and the surface discharge spark plugs that offer better ignition efficiency and longer life. Variations of these Spark Plugs are gaps sizes and heat ranges, which are critical when it comes to performance and or protection of the engine. The importance of a Spark Plug can thus be measured on the extent to which the Ford Explorer's performance will be affected if the said part is not well maintained and monitored.

Ford Explorer Spark Plug Parts and Q&A

Spark Plug
AGSF-22F-MX
Q: How to inspect a spark plug for issues such as bridged gaps, deposit buildup, oil fouling, carbon fouling, normal burning, pre-ignition, overheating, and fused deposits on Ford Explorer?
A:
Verify that the spark plug shows no bridged gap by examining the area between electrodes while looking for any deposits that restrict the gap caused by oil or carbon fouling. It is essential to clean the spark plug when required. The spark plug may show oil fouling through wet black deposits on specified areas mainly caused by faulty rings and Pistons along with valve to guide clearance errors and worn or loose bearings. Repair all oil leak sources before installing a new spark plug. Carbon fouling can be identified when black, dry, fluffy carbon accumulates on insulator tips and exposed shell surfaces and electrodes because of incorrect heat range spark plugs or blocked air filters or rich fuel mixtures or abnormal idling behavior; cleaning the plug fixes such contamination. The inspection of normal burning requires you to look for light tan or gray materials on the firing tip. A Heli coil or improper installation of the insert in spark plug threads will require a new spark plug along with engine damage analysis if the inspector detects electrode melting and insulator damage alongside metallic deposits. These signs could be linked to incorrect ignition timing, fuel problems, or unauthorized Heli coil interference. Overheating detection reveals white or light gray spots along with bluish burnt electrode appearance due to engine overheating or using wrong fuel along with loose plugs or improper heat range or weakened fuel pressure or off-time events requiring new spark plug installation. Drilled deposits affecting spark plugs should be inspected through melted or spotty formations that look like bubbles or blisters caused by abrupt acceleration before deciding whether to clean the plug.
Spark Plug
AGSF-32P-MX
Q: How to service and repair spark plugs on Ford Explorer?
A:
Begin testing spark plugs by disconnecting wires from the spark plugs before pulling out the spark plugs. Clear the spark plug well by blowing compressed air before taking out the spark plugs. Normal operating procedure requires using a previously installed original spark plug only in the cylinder it came from but fresh spark plugs may be added to any cylinder. The service begins with spark plug wire removal after which you should inspect the plugs before using a suitable tool to measure and adjust the spark plug gap appropriately. Perform the opposite steps for spark plug installation after completion of removal.