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 Excursion?

Check the spark plug connections as bridged and as well as deposit accumulation by oil or carbon fouling. Clean if necessary. Test of oil foul (wet, black deposits) and carbon foul (black, dry deposits). Check for normal burning (light tan deposits) and evidence of overheating or fused deposits and change spark plug accordingly.

How to service and repair a spark plug on Ford Excursion?

To replace the spark plug follow the following steps: Mark the position of the spark plug, loosen the ignition coil and remove the spark plug. Check and correct the gap (where necessary). Installing again Reverse the steps taken to remove the plug and clear the spark plug wells of any debris with compressed air.

OEM Ford Excursion Spark Plug

Ignition Spark Plug

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4 Spark Plugs found

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Ford Excursion Spark Plug Part Number: AGSF-22W-MX
$5.08 MSRP: $8.25
You Save: $3.17 (39%)
ADD TO CART
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:
- 2000-2005 Ford Excursion | Eddie Bauer, Limited, XLS, XLT | 10 Cyl 6.8 L GAS, 8 Cyl 5.4 L GAS
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Ford Excursion Spark Plug Part Number: MC3Z-12A342-F
$13.74 MSRP: $21.82
You Save: $8.08 (38%)
Ships in 1-2 Business Days
ADD TO CART
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:
- 2000-2003 Ford Excursion | Eddie Bauer, Limited, XLT | 8 Cyl 7.3 L DIESEL
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Ford Excursion Spark Plug Part Number: 4C3Z-12A342-A
$18.33 MSRP: $28.36
You Save: $10.03 (36%)
Ships in 1-3 Business Days
ADD TO CART
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:
- 2004-2005 Ford Excursion | Eddie Bauer, Limited, XLS, XLT | 8 Cyl 6.0 L DIESEL
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Ford Excursion 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:
- 2003-2005 Ford Excursion | Eddie Bauer, Limited, XLS, XLT | 8 Cyl 6.0 L DIESEL

Ford Excursion Spark Plug

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Ford Excursion Spark Plug Parts and Q&A

Spark Plug
3C3Z-12A342-A
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 Excursion?
A: Check the spark plug connections as bridged and as well as deposit accumulation by oil or carbon fouling. Clean if necessary. Test of oil foul (wet, black deposits) and carbon foul (black, dry deposits). Check for normal burning (light tan deposits) and evidence of overheating or fused deposits and change spark plug accordingly.
Spark Plug
AGSF-22W-MX
Q: How to service and repair a spark plug on Ford Excursion?
A: To replace the spark plug follow the following steps: Mark the position of the spark plug, loosen the Ignition Coil and remove the spark plug. Check and correct the gap (where necessary). Installing again Reverse the steps taken to remove the plug and clear the spark plug wells of any debris with compressed air.