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

Check on the spark plug to see whether there are bridged gaps and deposits due to oil or carbon. Clean if necessary. Look at oil fouling (wet, black deposits), carbon fouling (black, dry deposits). Search normal burning (light tan deposits) and overheating or fused deposits, and change spark plug where necessary.

How to service the spark plugs properly on Ford Mustang?

To replace spark plugs, loosen the wire boots by twisting and pulling off so that they do not break. Only hand tools should be used, including Spark Plug Wire Remover. Blow out debris and then plugs should be removed. Tighten, grease, and dielectric compound to ensure that wires are not in contact with sharp edges and exhaust manifold.

OEM Ford Mustang Spark Plug

Ignition Spark Plug

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10 Spark Plugs found

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Ford Mustang 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:
- 2005-2008 Ford Mustang | Bullitt, GT, Shelby GT | 8 Cyl 4.6 L GAS
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Ford Mustang Spark Plug Part Number: CYFS-12Y-T6
$5.39 MSRP: $8.35
You Save: $2.96 (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:
- 2011-2024 Ford Mustang | Base, Bullitt, Dark Horse, Dark Horse Premium, EcoBoost, EcoBoost Premium, GT, GT Premium, Mach 1, Shelby GT350, Shelby GT350R, Shelby GT500, V6 | 4 Cyl 2.3 L GAS, 6 Cyl 3.7 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.2 L GAS
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Ford Mustang Spark Plug Part Number: JYSP-12Y-PTX
$5.44 MSRP: $8.42
You Save: $2.98 (36%)
Ships in 1-2 Business Days
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Product Specifications
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2024 Ford Mustang | EcoBoost, EcoBoost Premium | 4 Cyl 2.3 L GAS
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Ford Mustang Spark Plug Part Number: HJFS-24FP-X
$9.73 MSRP: $15.06
You Save: $5.33 (36%)
Ships in 1-3 Business Days
ADD TO CART
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 Mustang | Bullitt, GT, Shelby GT | 8 Cyl 4.6 L GAS
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Ford Mustang Spark Plug Part Number: CYFS-092-YPT4X
$11.75 MSRP: $18.18
You Save: $6.43 (36%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Replaces: SP-581, CYFS-092-YFC, CYFS-092-YPT4
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2020-2022 Ford Mustang | Shelby GT500 | 8 Cyl 5.2 L GAS
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Ford Mustang Spark Plug Part Number: CGSF-12Y-PX
$11.75 MSRP: $18.18
You Save: $6.43 (36%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Replaces: CGSF-12Y-P, SP-536
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2013-2014 Ford Mustang | Shelby GT500 | 8 Cyl 5.8 L GAS
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Ford Mustang Spark Plug Part Number: AGSF-24N-X
$4.22 MSRP: $6.53
You Save: $2.31 (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:
- 2005-2010 Ford Mustang | Base | 6 Cyl 4.0 L GAS
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Ford Mustang Spark Plug Part Number: AGSF-22F-M1X
$4.98 MSRP: $8.09
You Save: $3.11 (39%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Replaces: AWSF-22F-M, AWSF-22F-M1, AGSF-22F-M1, SP-405
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2007-2012 Ford Mustang | Shelby GT500, Shelby GT500KR | 8 Cyl 5.4 L GAS
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Ford Mustang Spark Plug Part Number: CYFS-12Y-PCTX
$11.48 MSRP: $17.76
You Save: $6.28 (36%)
Ships in 1-3 Business Days
ADD TO CART
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:
- 2015-2023 Ford Mustang | EcoBoost, EcoBoost Premium | 4 Cyl 2.3 L GAS
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Ford Mustang Spark Plug Part Number: CYFS-12F-1X
$6.70 MSRP: $10.37
You Save: $3.67 (36%)
ADD TO CART
Product Specifications
- Replaces: CYFS-12F-1, SP-519, CYFS-12Y, SP-548
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2011-2020 Ford Mustang | GT, GT 50 Years Limited Edition, GT Premium, Shelby GT350, Shelby GT350R | 8 Cyl 5.0 L GAS, 8 Cyl 5.2 L GAS

Ford Mustang Spark Plug

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Ford Mustang Spark Plug Parts and Q&A

Spark Plug
PZK-1F
Q: How to inspect a spark plug for issues such as bridged gaps, deposit build-up, oil fouling, carbon fouling, normal burning, pre-ignition, overheating, and fused deposits on Ford Mustang?
A: Check on the spark plug to see whether there are bridged gaps and deposits due to oil or carbon. Clean if necessary. Look at oil fouling (wet, black deposits), carbon fouling (black, dry deposits). Search normal burning (light tan deposits) and overheating or fused deposits, and change spark plug where necessary.
Spark Plug
AGSF-22F-M1X
Q: How to service the spark plugs properly on Ford Mustang?
A: To replace spark plugs, loosen the wire boots by twisting and pulling off so that they do not break. Only hand tools should be used, including Spark Plug Wire Remover. Blow out debris and then plugs should be removed. Tighten, grease, and dielectric compound to ensure that wires are not in contact with sharp edges and Exhaust Manifold.