How to replace a spark plug on 2005 Buick LaCrosse?

Turn ignition OFF, remove ignition coil, and clear debris from the spark-plug cavity with compressed air while wearing safety glasses. Clean recess to prevent contamination and allow engine to cool before removal. Verify and adjust plug gap, use specified plugs, thread carefully, seat fully, tighten appropriately, then reinstall coil.

OEM 2005 Buick LaCrosse Spark Plug

Ignition Spark Plug

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2 Spark Plugs found

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2005 Buick LaCrosse Spark Plug Part Number: 12681664
$9.22 MSRP: $16.46
You Save: $7.24 (44%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Spark Plug Assembly-Gasoline Engine Ignition; Spark Plug, Spark Ignition; Spark Plug,Glow
- Replaces: 12568387, 25330840, 12565030, 25161444
- Item Weight: 1.00 Pounds
- Item Dimensions: 6.7 x 3.5 x 0.9 inches
- Condition: New
- Fitment Type: Direct Replacement
- Require Quantity: 6
- SKU: 12681664
- Warranty: This genuine part is guaranteed by GM's factory warranty.
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Fits the following 2005 Buick LaCrosse Submodels:
- CX, CXL | 6 Cyl 3.8 L GAS
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2005 Buick LaCrosse Spark Plug Part Number: 19301814
$9.53 MSRP: $17.02
You Save: $7.49 (45%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Spark Plug Assembly; Spark Plug,Glow
- Replaces: 19256624, 12565996
- Item Weight: 0.70 Pounds
- Item Dimensions: 4.3 x 4.0 x 1.4 inches
- Condition: New
- Fitment Type: Direct Replacement
- Require Quantity: 6
- SKU: 19301814
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2005 Buick LaCrosse Submodels:
- CXS | 6 Cyl 3.6 L GAS

2005 Buick LaCrosse Spark Plug

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2005 Buick LaCrosse Spark Plug Parts and Q&A

Q: How to replace a spark plug on 2005 Buick LaCrosse?
A: Turn ignition OFF, remove ignition coil, and clear debris from the spark-plug cavity with compressed air while wearing safety glasses. Clean recess to prevent contamination and allow engine to cool before removal. Verify and adjust plug gap, use specified plugs, thread carefully, seat fully, tighten appropriately, then reinstall coil.