How to service spark plugs safely and effectively on Ford F-350 Super Duty?

In order to service spark plugs, take out the ignition coil-on-plug. Make sure that the engine is heated. Always use hand tools and blast out with compressed air. Under same cylinder replace original plugs with new, which may be placed anywhere. Tighten to 34 Nm (25 lb-ft) and change out of spec plugs.

How to service the spark plugs on 5.4L (3V) or 6.8L (3V) engines on Ford F-350 Super Duty?

Service spark plugs on 5.4L engines or 6.8L engines: To remove coil-on-plug ignition coils, re-attach the ignition coil-on-plug to the ignition plug. Make sure that the engine is warm. Clean down with compressed air and hand tools. Use original plugs in same cylinder new plug may be in any place. Tighten to made torque and check replace when necessary.

OEM Ford F-350 Super Duty Spark Plug

Ignition Spark Plug

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8 Spark Plugs found

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Ford F-350 Super Duty 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:
- 2005-2007 Ford F-350 Super Duty | Harley-Davidson Edition, King Ranch, Lariat, XL, XLT | 10 Cyl 6.8 L GAS, 8 Cyl 5.4 L GAS
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Ford F-350 Super Duty 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:
- 2020-2024 Ford F-350 Super Duty | King Ranch, Lariat, Platinum, XL, XLT | 8 Cyl 6.8 L GAS, 8 Cyl 7.3 L GAS
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Ford F-350 Super Duty 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:
- 1999-2007 Ford F-350 Super Duty | Harley-Davidson Edition, King Ranch, Lariat, XL, XLT | 10 Cyl 6.8 L GAS, 8 Cyl 5.4 L GAS
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Ford F-350 Super Duty Spark Plug Part Number: HJFS-24FP-X
$9.73 MSRP: $15.06
You Save: $5.33 (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 F-350 Super Duty | Cabela's, FX4, Harley-Davidson Edition, King Ranch, Lariat, XL, XLT | 10 Cyl 6.8 L GAS, 8 Cyl 5.4 L GAS
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Ford F-350 Super Duty Spark Plug Part Number: MC3Z-12A342-F
$13.74 MSRP: $21.82
You Save: $8.08 (38%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Glow Plug; Diesel Glow Plug
- Replaces: ZD-11, F4TZ-12A342-A, F4TZ-12A342-BA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1999-2003 Ford F-350 Super Duty | King Ranch, Lariat, XL, XLT | 8 Cyl 7.3 L DIESEL
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Ford F-350 Super Duty Spark Plug Part Number: 4C3Z-12A342-A
$18.33 MSRP: $28.36
You Save: $10.03 (36%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Glow Plug; Diesel Glow Plug
- Replaces: 4C3Z-12A342-AA, 4C3Z-12A342-A2, ZD-13-A2, ZD-13
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2004-2007 Ford F-350 Super Duty | Harley-Davidson Edition, King Ranch, Lariat, XL, XLT | 8 Cyl 6.0 L DIESEL
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Ford F-350 Super Duty Spark Plug Part Number: 3C3Z-12A342-A
$9.64 MSRP: $14.91
You Save: $5.27 (36%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Other Name: Glow Plug; Diesel Glow Plug
- Replaces: ZD-12, 3C3Z-12A342-AA2, 3C3Z-12A342-AA, ZD-12-2
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2003-2004 Ford F-350 Super Duty | Harley-Davidson Edition, King Ranch, Lariat, XL, XLT | 8 Cyl 6.0 L DIESEL
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Ford F-350 Super Duty 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:
- 2011-2022 Ford F-350 Super Duty | King Ranch, Lariat, Platinum, XL, XLT | 8 Cyl 6.2 L FLEX

Ford F-350 Super Duty Spark Plug

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Ford F-350 Super Duty Spark Plug Parts and Q&A

Spark Plug
PZK-1F
Q: How to service spark plugs safely and effectively on Ford F-350 Super Duty?
A: In order to service spark plugs, take out the ignition coil-on-plug. Make sure that the engine is heated. Always use hand tools and blast out with compressed air. Under same cylinder replace original plugs with new, which may be placed anywhere. Tighten to 34 Nm (25 lb-ft) and change out of spec plugs.
Spark Plug
HJFS-24FP-X
Q: How to service the spark plugs on 5.4L (3V) or 6.8L (3V) engines on Ford F-350 Super Duty?
A: Service spark plugs on 5.4L engines or 6.8L engines: To remove coil-on-plug ignition coils, re-attach the ignition coil-on-plug to the ignition plug. Make sure that the engine is warm. Clean down with compressed air and hand tools. Use original plugs in same cylinder new plug may be in any place. Tighten to made torque and check replace when necessary.