How to replace the left exhaust manifold on Buick Rainier?

The vehicle requires support during elevation while you remove the nuts that connect the Catalytic Converter to the left Exhaust Manifold. Lower the vehicle then remove spark plugs from their location. The heat shield bolts then the shield from the Exhaust Manifold must be removed prior to taking out the Exhaust Manifold bolts and the manifold itself. Discard the old gasket. Exhaust Manifold needs both cleaning steps and an inspection process. Make sure to check the threads in the Exhaust Manifold bolt holes on the Cylinder Head for clean condition without any presence of threadlocking materials or debris. Threadlock gm p/n 12345493 (Canadian P/N 10953488) should be applied as a 5 mm (0.2 inch) wide band to the Exhaust Manifold bolts' threads while keeping sealant off the initial 3 threads. Windward 12345493 (Canadian 10953488) as threadlocker on the bolts before installing the gasket and new bolts at 15 nm (11 ft. Lbs.) while beginning with the middle two bolts and proceeding with alternate side-to-side torques before finishing with 25 nm (18 ft. Lbs.) torques. Fit the heat shield followed by the bolts which should be torqued to 9 nm with an 80 inch lb torque setting then use a flat punch to fold over the Exhaust Manifold gasket at the rear of the left Cylinder Head. After reinstalling the spark plugs you should raise the vehicle to attach the Catalytic Converter securely to the left Exhaust Manifold by tightening its nuts to 50 nm (37 ft. Lbs.).

OEM Buick Rainier Exhaust Manifold

Engine Exhaust Manifold

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Buick Rainier Exhaust Manifold Part Number: 12587310
$196.85 MSRP: $309.73
You Save: $112.88 (37%)
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Product Specifications
- Other Name: Manifold, Engine Exhaust Manifold; Manifold
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2007 Buick Rainier | CXL | 6 Cyl 4.2 L GAS
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Buick Rainier Exhaust Manifold Part Number: 88890560
Product Specifications
- Other Name: Manifold, Engine Exhaust Manifold; Manifold
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2004-2005 Buick Rainier | CXL, CXL Plus | 6 Cyl 4.2 L GAS
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Buick Rainier Exhaust Manifold, Passenger Side Part Number: 12600527
$133.53 MSRP: $210.11
You Save: $76.58 (37%)
Product Specifications
- Other Name: Manifold, Engine Exhaust Manifold; Manifold
- Position: Passenger Side
- Replaces: 12567484
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2004-2007 Buick Rainier | CXL, CXL Plus | 8 Cyl 5.3 L GAS
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Buick Rainier Exhaust Manifold, Driver Side Part Number: 12600526
$113.18 MSRP: $178.09
You Save: $64.91 (37%)
Product Specifications
- Other Name: Manifold, Engine Exhaust Manifold; Manifold
- Position: Driver Side
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2004-2007 Buick Rainier | CXL, CXL Plus | 8 Cyl 5.3 L GAS

Buick Rainier Exhaust Manifold

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The Buick Rainier Exhaust Manifold is one of the key factors in the car exhaust system since it is responsible for the direction of hot exhaust gases far from the engine, so improving general performance and power. The Buick Rainier Exhaust Manifold that is manufactured and sold in the market today is strong and resistant to wear due to its materials, cast iron or stainless steel. This manifold fits different models of Buick Rainier manufactured in 2004- 2007, which means it will be suitable to preserve the car's performance. Due to eliminating intake reversion as well as improving the supply of fresh air necessary for full combustion of gases, Buick Rainier Exhaust Manifold ensures all passengers' safety minimizing chances of hazardous fumes entering the car's interior. Also, the feature of the manifold plays the role of enhancing the engine temperatures making it even better for varieties of driving circumstances. The Buick Rainier can be seen as a unique car on the market because of its powerful engines: 4.2L Vortec I6 and 5.3L Small-block V8; luxurious interior and the latest safety systems. Thus, the incorporation of these attributes with a reliable Buick Rainier Exhaust Manifold ensures that Rainier is crafted for delivering powerful and comfortable rides with maximum protection to passengers. In general, the Buick Rainier Exhaust Manifold serves as an appropriate example of the company's work since it targets confident and safe automotive performance of this luxury SUV.

Buick Rainier Exhaust Manifold Parts Questions & Experts Answers

Exhaust Manifold
12587310
Q: How to replace the left exhaust manifold on Buick Rainier?
A:
The vehicle requires support during elevation while you remove the nuts that connect the Catalytic Converter to the left Exhaust Manifold. Lower the vehicle then remove Spark Plugs from their location. The heat shield bolts then the shield from the Exhaust Manifold must be removed prior to taking out the Exhaust Manifold bolts and the manifold itself. Discard the old gasket. Exhaust Manifold needs both cleaning steps and an inspection process. Make sure to check the threads in the Exhaust Manifold bolt holes on the Cylinder Head for clean condition without any presence of threadlocking materials or debris. Threadlock gm p/n 12345493 (Canadian P/N 10953488) should be applied as a 5 mm (0.2 inch) wide band to the Exhaust Manifold bolts' threads while keeping sealant off the initial 3 threads. Windward 12345493 (Canadian 10953488) as threadlocker on the bolts before installing the gasket and new bolts at 15 nm (11 ft. Lbs.) while beginning with the middle two bolts and proceeding with alternate side-to-side torques before finishing with 25 nm (18 ft. Lbs.) torques. Fit the heat shield followed by the bolts which should be torqued to 9 nm with an 80 inch lb torque setting then use a flat punch to fold over the Exhaust Manifold gasket at the rear of the left Cylinder Head. After reinstalling the spark plugs you should raise the vehicle to attach the Catalytic Converter securely to the left Exhaust Manifold by tightening its nuts to 50 nm (37 ft. Lbs.).