How to inspect a spark plug for issues such as bridged gaps, fouling, and overheating on Ford F-150?

Inspect the spark plug gap for wiring condition while searching for deposit accumulation that could seal the element gap. Oil and carbon fouling would have caused this condition. Check to determine if cleaning the spark plug would be required. Check for oil contaminant indications through black wet deposits on the spark plug shell bore electrodes but address any oil leakage problems first because such conditions stem from worn rings and pistons or excessive valve-to-guide clearance or worn bearings or loose parts. Examine the insulator tips along with exposed shell surfaces and electrodes for black dry carbon accumulations because this occurrence indicates improper heat range usage, unclean air filters or fuel mixture problems or extended engine idling; cleaning the spark plug becomes necessary when carbon fouling exists. The inspection of normal plug burning requires you to search for light tan or gray residue on the firing tip. The presence of melted electrodes together with insulator damage and metallic residues means engine damage most likely stems from incorrect ignition timing or wrong fuel choice or unauthorized hell-coil installation inside the spark plug thread necessary for replacing the plug. Examine your spark plugs for overheating symptoms that include white or light gray spots and bluish-burnt electrodes because such conditions stem from engine overheating and result from improper fuel usage or loose sparks plugs or the wrong heat range or low fuel pressure or incorrect ignition timing. You should replace overheated spark plugs immediately. The inspection for fused deposits should be performed because they manifest as melted or spotty deposits with bubble or blister patterns which typically occur from sudden acceleration events requiring spark plug cleaning.

OEM Ford F-150 Spark Plug

Ignition Spark Plug

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17 Spark Plugs found

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Ford F-150 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:
- 2004-2008 Ford F-150 | FX2, FX4, Harley-Davidson Edition, King Ranch, Lariat, Limited, THE 60TH ANNIVERSARY EDITION, XL, XLT | 8 Cyl 5.4 L FLEX, 8 Cyl 5.4 L GAS
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Ford F-150 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:
- 2011-2023 Ford F-150 | King Ranch, Lariat, Platinum, SSV, STX, XL, XLT | 6 Cyl 3.3 L FLEX, 6 Cyl 3.5 L FLEX, 6 Cyl 3.7 L CNG, 6 Cyl 3.7 L FLEX, 6 Cyl 3.7 L LPG, 8 Cyl 5.0 L FLEX
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Ford F-150 Spark Plug
Part Number: AGSF-22W-MX
$5.08 MSRP: $8.25
You Save: $3.17 (39%)
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Product Specifications
- Replaces: AGSF-22W-M, SP-479, AGSF-22W-
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1998-2003 Ford F-150 | Base, Harley-Davidson Edition, King Ranch, Lariat, Lightning, XL, XLT | 8 Cyl 5.4 L BI-FUEL, 8 Cyl 5.4 L CNG, 8 Cyl 5.4 L GAS
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Ford F-150 Spark Plug
Part Number: AGSF-12F-MX
$5.14 MSRP: $8.35
You Save: $3.21 (39%)
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Product Specifications
- Replaces: AGSF-12F-M, AGSF-12F-M1X, AGSF-12E-, SP-495, AGSF-12F-M1, AGSF-12F-M1F4
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1999-2003 Ford F-150 | Base, Harley-Davidson Edition, King Ranch, Lariat, Lightning, XL, XLT | 8 Cyl 5.4 L BI-FUEL, 8 Cyl 5.4 L CNG, 8 Cyl 5.4 L GAS
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Ford F-150 Spark Plug
Part Number: HYFS-12Y-PT
$10.92 MSRP: $16.89
You Save: $5.97 (36%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2021-2023 Ford F-150 | King Ranch, Lariat, Platinum, SSV, Tremor, XL, XLT | 8 Cyl 5.0 L FLEX
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Ford F-150 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:
- 2009-2010 Ford F-150 | FX2, FX4, Harley-Davidson Edition, King Ranch, Lariat, Platinum, STX, SVT Raptor, XL, XLT | 8 Cyl 4.6 L GAS, 8 Cyl 5.4 L FLEX
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Ford F-150 Spark Plug
Part Number: CYFS-12-YT4X
$11.64 MSRP: $18.02
You Save: $6.38 (36%)
Ships in 1-3 Business Days
ADD TO CART
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:
- 2011-2016 Ford F-150 | FX2, FX4, King Ranch, Lariat, Limited, Platinum, SSV, XL, XLT | 6 Cyl 3.5 L GAS
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Ford F-150 Spark Plug
Part Number: CYFS-12-FPX
$8.74 MSRP: $13.53
You Save: $4.79 (36%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Replaces: SP-513, CYFS-092FP, CYFS-12-FP, SP-526
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2010-2014 Ford F-150 | FX2, FX4, Harley-Davidson Edition, Lariat, Lariat Limited, Platinum, SVT Raptor, XLT | 8 Cyl 6.2 L GAS
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Ford F-150 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:
- 2011-2017 Ford F-150 | FX2, FX4, King Ranch, Lariat, Platinum, SSV, STX, XL, XLT | 8 Cyl 5.0 L FLEX
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Ford F-150 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:
- 2023 Ford F-150 | Raptor R | 8 Cyl 5.2 L GAS
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Ford F-150 Spark Plug
Part Number: AGSF-42F-MX
$5.40 MSRP: $8.58
You Save: $3.18 (38%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Replaces: AGSF-42F-M, SP-486
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1997 Ford F-150 | Base, XL, XLT | 6 Cyl 4.2 L GAS
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Ford F-150 Spark Plug
Part Number: AGSF-34F-MX
$5.16 MSRP: $8.20
You Save: $3.04 (38%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Replaces: AGSF-34F-M, SP-504
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2005-2008, 1998-2003 Ford F-150 | Base, STX, XL, XLT | 6 Cyl 4.2 L GAS
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Ford F-150 Spark Plug
Part Number: AGSF-32P-MX
$6.04 MSRP: $9.35
You Save: $3.31 (36%)
Ships in 1-3 Business Days
ADD TO CART
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:
- 2004-2008 Ford F-150 | FX2, STX, THE 60TH ANNIVERSARY EDITION, XL, XLT | 8 Cyl 4.6 L GAS
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Ford F-150 Spark Plug
Part Number: AGSF-32F-MX
$5.41 MSRP: $8.36
You Save: $2.95 (36%)
Ships in 1-3 Business Days
ADD TO CART
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:
- 1997-2000 Ford F-150 | Base, Lariat, XL, XLT | 8 Cyl 4.6 L GAS
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Ford F-150 Spark Plug
Part Number: DYFS-12Y-PT
$12.81 MSRP: $19.82
You Save: $7.01 (36%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2021-2023 Ford F-150 | King Ranch, Lariat, Limited, Platinum, Police Responder, Raptor, SSV, Tremor, XL, XLT | 6 Cyl 3.5 L FULL HYBRID EV-GAS (FHEV), 6 Cyl 3.5 L GAS
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Ford F-150 Spark Plug
Part Number: CYFS-12Y-RT3
$11.20 MSRP: $18.18
You Save: $6.98 (39%)
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:
- 2015-2023 Ford F-150 | King Ranch, Lariat, Limited, Platinum, Police Responder, Raptor, SSV, Tremor, XL, XLT | 6 Cyl 2.7 L GAS, 6 Cyl 3.5 L FULL HYBRID EV-GAS (FHEV), 6 Cyl 3.5 L GAS
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Ford F-150 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:
- 2017-2020 Ford F-150 | King Ranch, Lariat, Limited, Platinum, Police Responder, SSV, XL, XLT | 6 Cyl 3.5 L GAS

Ford F-150 Spark Plug

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Ford F-150 Spark Plug Parts Questions & Experts Answers

Spark Plug
PZK-1F
Q: How to inspect a spark plug for issues such as bridged gaps, fouling, and overheating on Ford F-150?
A: Inspect the spark plug gap for wiring condition while searching for deposit accumulation that could seal the element gap. Oil and carbon fouling would have caused this condition. Check to determine if cleaning the spark plug would be required. Check for oil contaminant indications through black wet deposits on the spark plug shell bore electrodes but address any oil leakage problems first because such conditions stem from worn rings and Pistons or excessive valve-to-guide clearance or worn bearings or loose parts. Examine the insulator tips along with exposed shell surfaces and electrodes for black dry carbon accumulations because this occurrence indicates improper heat range usage, unclean air filters or fuel mixture problems or extended engine idling; cleaning the spark plug becomes necessary when carbon fouling exists. The inspection of normal plug burning requires you to search for light tan or gray residue on the firing tip. The presence of melted electrodes together with insulator damage and metallic residues means engine damage most likely stems from incorrect ignition timing or wrong fuel choice or unauthorized hell-coil installation inside the spark plug thread necessary for replacing the plug. Examine your spark plugs for overheating symptoms that include white or light gray spots and bluish-burnt electrodes because such conditions stem from engine overheating and result from improper fuel usage or loose sparks plugs or the wrong heat range or low fuel pressure or incorrect ignition timing. You should replace overheated spark plugs immediately. The inspection for fused deposits should be performed because they manifest as melted or spotty deposits with bubble or blister patterns which typically occur from sudden acceleration events requiring spark plug cleaning.