How to replace the catalytic converter on a 4.2L engine on 2004 Buick Rainier?

In order to remove the catalytic converter on a 4.2L engine, position the vehicle on its back and deattach the symptoms of the heated oxygen sensor as well as the nuts holding the catalytic converter pipe together. Removal of the catalytic converter pipe and exhaust hanger. Install the components again but tighten the exhaust flange nuts evenly so that it does not leak.

OEM 2004 Buick Rainier Catalytic Converter

Cat. Converter

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4 Catalytic Converters found

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2004 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
- Item Weight: 22.10 Pounds
- Item Dimensions: 61.4 x 15.9 x 10.4 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 15216001
- Warranty: This genuine part is guaranteed by GM's factory warranty.
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Fits the following 2004 Buick Rainier Submodels:
- CXL, CXL Plus | 6 Cyl 4.2 L GAS
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2004 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
- Item Weight: 34.90 Pounds
- Item Dimensions: 38.1 x 31.6 x 15.7 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 15083262
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2004 Buick Rainier Submodels:
- CXL, CXL Plus | 8 Cyl 5.3 L GAS
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2004 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
- Item Weight: 20.00 Pounds
- Item Dimensions: 51.4 x 11.1 x 7.4 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 15216000
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2004 Buick Rainier Submodels:
- CXL, CXL Plus | 6 Cyl 4.2 L GAS
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2004 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
- Item Weight: 33.30 Pounds
- Item Dimensions: 45.4 x 30.1 x 13.3 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 15194248
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2004 Buick Rainier Submodels:
- CXL, CXL Plus | 8 Cyl 5.3 L GAS

2004 Buick Rainier Catalytic Converter

With a comprehensive array of OEM 2004 Buick Rainier Catalytic Converter, from fuel pumps to door handles, our website is a one-stop-shop for your needs. All our genuine 2004 Buick Rainier Catalytic Converter are backed by the manufacturer's warranty and are offered at competitive prices in the market. Rest assured, you can shop with complete confidence.

2004 Buick Rainier Catalytic Converter Parts and Q&A

Q: How to replace the catalytic converter on a 4.2L engine on 2004 Buick Rainier?
A: In order to remove the catalytic converter on a 4.2L engine, position the vehicle on its back and deattach the symptoms of the heated oxygen sensor as well as the nuts holding the catalytic converter pipe together. Removal of the catalytic converter pipe and exhaust hanger. Install the components again but tighten the exhaust flange nuts evenly so that it does not leak.