How to replace spark plugs in an engine on Buick Terraza?

The replacement of spark plugs requires waiting for engine temperature to cool down to avoid threads in the Cylinder Head from seizing while protecting them from damage. Remove all foreign debris from the Spark Plug recess to stop material contamination in the Cylinder Head threads which could cause improper Spark Plug seating. The correct Spark Plug for your vehicle must be used alone since alternative plug temperatures will harm the engine heavily. Start the procedure by removing both the air cleaner outlet duct and the intake manifold cover whenever needed. First disconnect the left Spark Plug Wires and then use engine rotation to gain better workspace before removing the right Spark Plug Wires and associated spark plugs. Verify the gap of all new and reconditioned spark plugs with a round wire feeler gauge since their pre-installed gaps might have changed. According to ignition system specifications adjust the new spark plugs and install them while torqueing them to 15 n.m (11 lb ft). You must reconnect both right side Spark Plug Wires once the engine returns to its original position and finally reconnect the left side Spark Plug Wires. Reinstall the intake manifold cover together with the air cleaner outlet duct if these components needed replacement during the service period.

OEM Buick Terraza Spark Plug

Ignition Spark Plug

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Buick Terraza 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
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2006 Buick Terraza | CX, CXL | 6 Cyl 3.5 L GAS
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Buick Terraza Spark Plug Part Number: 12681662
$11.36 MSRP: $20.28
You Save: $8.92 (44%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Spark Plug, Spark Ignition; Spark Plug,Glow
- Replaces: 12591131
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2007 Buick Terraza | CX, CXL | 6 Cyl 3.9 L FLEX, 6 Cyl 3.9 L GAS

Buick Terraza Spark Plug

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The Buick Terraza Spark Plug is an important item that highly contributes to improving on Buick Terraza automobiles. Having the role of initiating the combustion of the fuel/air mixture in the engine, the Spark Plug is critical for the smooth running and for avoiding various sorts of damage. Several types of Spark Plugs are in the market, that is; copper/nickel, platinum, and iridium Spark Plugs, which makes the product suitable for all Terraza models to give the premier performance. The Buick Terraza was manufactured from 2005 to 2007 and is considered one of the premiere luxury vehicles characterized by comfort and utility, as it can house up to seven people; the vehicle comes with different powertrain options. The Spark Plug takes a vital role in this minivan because the poor or damaged spark plugs cause misfires, rough idle, and poor fuel economy. Thus, the importance of proper inspection and timely replacement of the Spark Plug to increase the longevity and efficiency of the vehicle. Moreover, the Buick Terraza Spark Plug is also safety enhancing parts working hand in hand with side air bag; antilock brake. Thus its design is made with great durability and performance using enhanced materials; thus is stands out in the automotive market. Thus, the Buick Terraza Spark Plug not only improves the driving feeling but also strengthens the market image of Buick Terraza as a Practical and Efficient Luxury Minivan.

Buick Terraza Spark Plug Parts and Q&A

Spark Plug
12681662
Q: How to replace spark plugs in an engine on Buick Terraza?
A:
The replacement of spark plugs requires waiting for engine temperature to cool down to avoid threads in the Cylinder Head from seizing while protecting them from damage. Remove all foreign debris from the Spark Plug recess to stop material contamination in the Cylinder Head threads which could cause improper Spark Plug seating. The correct Spark Plug for your vehicle must be used alone since alternative plug temperatures will harm the engine heavily. Start the procedure by removing both the air cleaner outlet duct and the intake manifold cover whenever needed. First disconnect the left Spark Plug Wires and then use engine rotation to gain better workspace before removing the right Spark Plug Wires and associated spark plugs. Verify the gap of all new and reconditioned spark plugs with a round wire feeler gauge since their pre-installed gaps might have changed. According to ignition system specifications adjust the new spark plugs and install them while torqueing them to 15 n.m (11 lb ft). You must reconnect both right side Spark Plug Wires once the engine returns to its original position and finally reconnect the left side Spark Plug Wires. Reinstall the intake manifold cover together with the air cleaner outlet duct if these components needed replacement during the service period.