How to replace spark plugs on Buick Rainier?

You must activate off the Ignition Switch followed by uninstalling the ignition coils before beginning Spark Plug replacement. Turn off ignition first and then inspect for engine cooling before removing spark plugs since heat during the process can cause Cylinder Head thread damage. A thread chaser should be used to clean the Spark Plug recess area from foreign material that could damage threads and stop proper seat placement of the new plug. Measure the Spark Plug gap of new plugs against specified measurements before applying any necessary corrections. Using spark plugs from an inappropriate heat level for the specified vehicle will result in critical engine damage. A round feeler gage should measure all new and reconditioned spark plugs for gap before installation because handling might have modified pre-set gaps. The installation process requires inserting the spark plugs with attention to their proper connection to the Cylinder Head while ensuring complete seating of the plugs. You should use a thread chaser if any cleaning of the threads is required. Reinstall the ignition coils after tightening the spark plugs to 18 n.m (13 lb ft).

OEM Buick Rainier Spark Plug

Ignition Spark Plug

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Buick Rainier Spark Plug Part Number: 12681665
$9.22 MSRP: $16.46
You Save: $7.24 (44%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Spark Plug Assembly-Gasoline Engine Ignition; Spark Plug, Spark Ignition; Spark Plug,Glow
- Replaced by: 12681664
- Replaces: 25162555, 12607234, 25315018, 25162556, 19256067, 89017883
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2004-2007 Buick Rainier | CXL, CXL Plus | 6 Cyl 4.2 L GAS, 8 Cyl 5.3 L GAS
View related parts
Buick Rainier Spark Plug Part Number: 12681663
$9.22 MSRP: $16.46
You Save: $7.24 (44%)
ADD TO CART
Product Specifications
- Other Name: Spark Plug Assembly-Gasoline Engine Ignition; Spark Plug, Spark Ignition; Spark Plug,Glow
- Replaces: 12598004, 12625058
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2004-2007 Buick Rainier | CXL, CXL Plus | 6 Cyl 4.2 L GAS

Buick Rainier Spark Plug

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The Buick Rainier Spark Plug is a part with a great impact and value on the Buick Rainier vehicles due to its great importance. An essential component of a vehicle's internal combustion process, the spark plug is intentionally engineered to create a concise spark to ignite the combination of air and fuel in the engine. As one can find Copper Core, Platinum, Iridium, Double Platinum types of spark plugs; each Spark Plug needs to fit in different Rainier models due to the relevancy of compatibility and performance. It is important to describe in details the Spark Plug subjected to thread diameter, seat type, heat range and reach to have impact on the efficiency of the engine and the longevity of the engine as well. The health of the Spark Plug substantially depends on routine checks and replacement to avoid misfires as well as poor fuel economy which in turn boost the safety and performance of the Buick Rainier. The Rainier, often noted for its strong powertrain and the rich boulevard that it oozes, stands to greatly benefit from high-quality Spark Plugs that go well with its raining 4.2L Vortec I6 and the 5.3L Small-block V8 engines. This mid-size luxury SUV has an outstanding position both in terms of appearance and safety features within the automotive industry; moreover, the Spark Plugs reliability proves Buick's high quality orientation. In conclusion, it is evident that Buick Rainier Spark Plug provides optimum performance and solidity of the car reputation for safety and efficiency that is quite appealing to clients.

Buick Rainier Spark Plug Parts and Q&A

Spark Plug
12681665
Q: How to replace spark plugs on Buick Rainier?
A:
You must activate off the Ignition Switch followed by uninstalling the Ignition Coils before beginning Spark Plug replacement. Turn off ignition first and then inspect for engine cooling before removing spark plugs since heat during the process can cause Cylinder Head thread damage. A thread chaser should be used to clean the Spark Plug recess area from foreign material that could damage threads and stop proper seat placement of the new plug. Measure the Spark Plug gap of new plugs against specified measurements before applying any necessary corrections. Using spark plugs from an inappropriate heat level for the specified vehicle will result in critical engine damage. A round feeler gage should measure all new and reconditioned spark plugs for gap before installation because handling might have modified pre-set gaps. The installation process requires inserting the spark plugs with attention to their proper connection to the Cylinder Head while ensuring complete seating of the plugs. You should use a thread chaser if any cleaning of the threads is required. Reinstall the ignition coils after tightening the spark plugs to 18 n.m (13 lb ft).