How to replace the catalytic converter on a 4.2L engine on Buick Rainier?

A vehicle requires lifting for the replacement of its Catalytic Converter in 4.2l engines. Caretfully detach the heated Oxygen Sensor (H2OS) and the Catalytic Converter pipe nuts from the Exhaust Manifold while discarding both the old exhaust seal for disposal. The replacement sequence starts by removing nuts which attach the Catalytic Converter pipe to both the Muffler and the transmission mount. Next use tools to extract both the Catalytic Converter pipe and its attached Exhaust Hanger. The process begins with attaching the Exhaust Hanger to the Catalytic Converter pipe before reinstalling this pipe onto the vehicle's frame. The transmission mount will be replaced and the converter pipe needs installation to connect with the Muffler. Use hand threading to reach the exhaust flange first then tighten both nuts to 45 n.m (33 lb ft) to achieve joint alignment and prevent exhaust leakage.

OEM Buick Rainier Catalytic Converter

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10 Catalytic Converters found

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Buick Rainier Catalytic Converter Part Number: 15808213
$1213.76 MSRP: $1809.85
You Save: $596.09 (33%)
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Product Specifications
- Other Name: Converter Assembly-3Way Catalytic (W/Exhaust Manifold P; Exhaust Pipe; Converter & Pipe; Converter, Catalytic Converter; Converter, Exhaust Pipe
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006 Buick Rainier | CXL | 8 Cyl 5.3 L GAS
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Buick Rainier Catalytic Converter Part Number: 15276513
Product Specifications
- Other Name: Converter Assembly-3Way Catalytic (W/Exhaust Manifold P; Exhaust Pipe; Converter & Pipe; Converter, Catalytic Converter
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006 Buick Rainier | CXL | 6 Cyl 4.2 L GAS
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Buick Rainier Catalytic Converter Part Number: 15216001
Product Specifications
- Other Name: Converter Assembly-3Way Catalytic (W/Exhaust Manifold P; Exhaust Pipe; Converter & Pipe; Converter, Catalytic Converter; Converter, Exhaust Pipe
- 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 Catalytic Converter Part Number: 15083262
$1117.65 MSRP: $1665.53
You Save: $547.88 (33%)
Product Specifications
- Other Name: Converter, Exhaust Pipe; Converter & Pipe; Converter, Catalytic Converter; Exhaust Pipe
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2004 Buick Rainier | CXL, CXL Plus | 8 Cyl 5.3 L GAS
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Buick Rainier Converter & Pipe Part Number: 15813517
Product Specifications
- Other Name: Converter Assembly-3Way Catalytic (W/Exhaust Manifold P; Catalytic Converter; Exhaust Pipe; Converter, Catalytic Converter; Converter, Exhaust Pipe
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007 Buick Rainier | CXL | 8 Cyl 5.3 L GAS
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Buick Rainier Catalytic Converter Part Number: 15798414
Product Specifications
- Other Name: Converter Assembly-3Way Catalytic (W/Exhaust Manifold P; Converter & Pipe; Converter, Catalytic Converter; Converter, Exhaust Pipe
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2007 Buick Rainier | CXL | 8 Cyl 5.3 L GAS
View related parts
Buick Rainier Catalytic Converter Part Number: 15276514
Product Specifications
- Other Name: Converter, 3Way Catalytic (W/Exhaust Manifold Pipe); Exhaust Pipe; Converter & Pipe; Converter, Catalytic Converter; Converter, Exhaust Pipe
- 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 Catalytic Converter Part Number: 15216000
Product Specifications
- Other Name: Converter, 3Way Catalytic (W/Exhaust Manifold Pipe); Exhaust Pipe; Converter & Pipe; Converter, Catalytic Converter; Converter, Exhaust Pipe
- 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 Catalytic Converter Part Number: 15194248
Product Specifications
- Other Name: Converter Assembly-3Way Catalytic (W/Exhaust Manifold P; Exhaust Pipe; Converter & Pipe; Converter, Catalytic Converter; Converter, Exhaust Pipe
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2004 Buick Rainier | CXL, CXL Plus | 8 Cyl 5.3 L GAS
View related parts
Buick Rainier Catalytic Converter Part Number: 15119821
Product Specifications
- Other Name: Converter Assembly-3Way Catalytic (W/Exhaust Manifold P; Converter & Pipe; Converter, Catalytic Converter; Converter, Exhaust Pipe
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005 Buick Rainier | CXL, CXL Plus | 8 Cyl 5.3 L GAS

Buick Rainier Catalytic Converter

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The Catalytic Converter is a functional part of emission system in the Buick Rainier cars which are the epitome of reliability and performance. This superb Catalytic Converter actually reduces toxic effluent like the Carbon Monoxide, Hydrocarbons, and Oxides of Nitrogen into safer compounds and therefore adds to the Buick Rainier's utility and safety. Manufactured with such noble metals as platinum, palladium, or rhodium, the Catalytic Converter has a honey comb structure to achieve highest chemical reactions in exhaust fumes. Its compatibility with the different Rainier models like the CXL and CXL Plus trims is also of great importance in realizing the company's goal of operating vehicles with low emission capacities. The Buick Rainier is highly regarded for not only having efficient engines such as 4.2L Vortec I6 and the muscular 5.3L Small-block V8, but also the aesthetic and safety qualities. This Catalytic Converter has a significant responsibility of decreasing destructive emissions hence promoting a cleaner environment when the car is in use. Other features like improvement of exhaust restriction goes a notch higher to improve the Catalytic Converter and make it among the optimal in the current Auto market. In conclusion, the Catalytic Converter is the perfect representation of the brand's core values of delivering quality, safety and responsibility towards the environment, cementing its position as the ideal car for the sophisticated customer.

Buick Rainier Catalytic Converter Parts Questions & Experts Answers

Catalytic Converter
15083262
Q: How to replace the catalytic converter on a 4.2L engine on Buick Rainier?
A:
A vehicle requires lifting for the replacement of its Catalytic Converter in 4.2l engines. Caretfully detach the heated Oxygen Sensor (H2OS) and the Catalytic Converter pipe nuts from the Exhaust Manifold while discarding both the old exhaust seal for disposal. The replacement sequence starts by removing nuts which attach the Catalytic Converter pipe to both the Muffler and the transmission mount. Next use tools to extract both the Catalytic Converter pipe and its attached Exhaust Hanger. The process begins with attaching the Exhaust Hanger to the Catalytic Converter pipe before reinstalling this pipe onto the vehicle's frame. The transmission mount will be replaced and the converter pipe needs installation to connect with the Muffler. Use hand threading to reach the exhaust flange first then tighten both nuts to 45 n.m (33 lb ft) to achieve joint alignment and prevent exhaust leakage.