How to service and repair spark plugs on 2003 Ford F-150?

In order to remove the spark plugs and re-fit, first remove the coil on plugs and then remove the spark plugs. Eject any foreign matter in the spark plug wells with compressed air. Once removed, check the spark plugs and modify the gap where required. To install it, reverse the uninstallation process.

OEM 2003 Ford F-150 Spark Plug

Ignition Spark Plug

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2003 Ford F-150 Spark Plug Part Number: AGSF-12F-MX
$5.14 MSRP: $8.35
You Save: $3.21 (39%)
ADD TO CART
Product Specifications
- Replaces: AGSF-12F-M, AGSF-12F-M1X, AGSF-12E-, SP-495, AGSF-12F-M1, AGSF-12F-M1F4
- Condition: New
- Fitment Type: Direct Replacement
- SKU: AGSF-12F-MX
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following 2003 Ford F-150 Submodels:
- 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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2003 Ford F-150 Spark Plug Part Number: AGSF-34F-MX
$5.30 MSRP: $8.20
You Save: $2.90 (36%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Replaces: AGSF-34F-M, SP-504
- Condition: New
- Fitment Type: Direct Replacement
- SKU: AGSF-34F-MX
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following 2003 Ford F-150 Submodels:
- Base, STX, XL, XLT | 6 Cyl 4.2 L GAS
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2003 Ford F-150 Spark Plug Part Number: AGSF-22W-MX
$5.33 MSRP: $8.25
You Save: $2.92 (36%)
Product Specifications
- Replaces: AGSF-22W-M, SP-479, AGSF-22W-
- Condition: New
- Fitment Type: Direct Replacement
- SKU: AGSF-22W-MX
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following 2003 Ford F-150 Submodels:
- 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

2003 Ford F-150 Spark Plug

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2003 Ford F-150 Spark Plug Parts Q&A

Q: How to service and repair spark plugs on 2003 Ford F-150?
A: In order to remove the spark plugs and re-fit, first remove the coil on plugs and then remove the spark plugs. Eject any foreign matter in the spark plug wells with compressed air. Once removed, check the spark plugs and modify the gap where required. To install it, reverse the uninstallation process.