What is the purpose of the catalytic converter in the exhaust system?

The catalytic converter is an emission control device added to the exhaust system to reduce pollutants from the exhaust gas stream. These systems are equipped with a single bed monolith catalytic converter. This monolithic converter contains a honeycomb mesh which is also coated with two types of catalysts. One type is the oxidation catalyst while the other type is a three-way catalyst that contains platinum and palladium. The three-way catalyst lowers the levels of oxides of nitrogen (NOx) as well as hydrocarbons (HG) and carbon monoxide (CO) emissions. The oxidation catalyst lowers the levels of hydrocarbons and carbon monoxide. If the PCM detects a reduction in the efficiency of the catalytic converter a code P0420 or P0430 will set. The test equipment for a catalytic converter is expensive and highly sophisticated. If you suspect the converter is malfunctioning, take it to a dealer service department or authorized emissions inspection facility for diagnosis and repair. Whenever the vehicle is raised for service of underbody components, check the converter for leaks, corrosion and other damage. If damage is discovered, the converter should be replaced. Because the converter is welded to the exhaust system, converter replacement requires removal of the exhaust pipe assembly. Take the vehicle, or the exhaust system, to a dealer service department or a muffler shop.

Genuine Chevrolet Blazer Catalytic Converter

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28 Catalytic Converters found

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Chevrolet Blazer W/UP 3Way Catalytic Convertor Assembly
Part Number: 12676948
$979.14 MSRP: $1464.18
You Save: $485.04 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Converter Assembly, W/Up 3Way Ctltc; Catalytic Converter
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2019-2021 Chevrolet Blazer | L 4 DOOR SUV, LT 4 DOOR SUV | 4 Cyl 2.5L
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Chevrolet Blazer Converter Assembly, W/Up 3Way Ctltc
Part Number: 55512009
$933.26 MSRP: $1394.97
You Save: $461.71 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Catalytic Converter, Converter & Pipe
- Replaced by: 55516911
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2020 Chevrolet Blazer | HIGH COUNTRY/LTZ 4 DOOR SUV, LT 4 DOOR SUV, RS 4 DOOR SUV | 4 Cyl 2.0L
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Chevrolet Blazer Converter Assembly, Warm Up 3Way Catalytic (W/ Exhaust Pip
Part Number: 84315299
$985.46 MSRP: $1473.73
You Save: $488.27 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Converter Assembly, W/Up 3Way Ctltc (W/ Exh Pip; Catalytic Converter
- Replaced by: 85513025
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2019 Chevrolet Blazer | HIGH COUNTRY/LTZ 4 DOOR SUV, LT 4 DOOR SUV, RS 4 DOOR SUV | 6 Cyl 3.6L
View related parts
Chevrolet Blazer Converter Assembly, W/Up 3Way Ctltc (W/ Exh Pip
Part Number: 85513028
$274.59 MSRP: $412.32
You Save: $137.73 (34%)
ADD TO CART
Product Specifications
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2020-2021 Chevrolet Blazer | HIGH COUNTRY/LTZ 4 DOOR SUV, LT 4 DOOR SUV, RS 4 DOOR SUV | 6 Cyl 3.6L
View related parts
Chevrolet Blazer Converter Assembly, W/Up 3Way Ctltc
Part Number: 55511596
$920.70 MSRP: $1388.71
You Save: $468.01 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Catalytic Converter, Converter & Pipe
- Replaced by: 55516909
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2021 Chevrolet Blazer | HIGH COUNTRY/LTZ 4 DOOR SUV, LT 4 DOOR SUV, RS 4 DOOR SUV | 4 Cyl 2.0L
View related parts
Chevrolet Blazer Converter Assembly, W/Up 3Way Ctltc (W/ Exh Pip
Part Number: 85132441
$297.48 MSRP: $434.05
You Save: $136.57 (32%)
ADD TO CART
Product Specifications
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2019 Chevrolet Blazer | HIGH COUNTRY/LTZ 4 DOOR SUV, LT 4 DOOR SUV, RS 4 DOOR SUV | 6 Cyl 3.6L
View related parts
Chevrolet Blazer Converter Assembly, W/Up 3Way Ctltc (W/ Exh Pip
Part Number: 85513026
$273.04 MSRP: $409.97
You Save: $136.93 (34%)
ADD TO CART
Product Specifications
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2020-2021 Chevrolet Blazer | HIGH COUNTRY/LTZ 4 DOOR SUV, LT 4 DOOR SUV, RS 4 DOOR SUV | 6 Cyl 3.6L
View related parts
Chevrolet Blazer Exhaust Manifold Pipe Assembly *Marked Print
Part Number: 15037288
Product Specifications
- Other Name: Pipe Assembly, Exhaust Manifold *Marked Print
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2000-2002 Chevrolet Blazer | 4 DOOR | 6 Cyl 4.3L
View related parts
Chevrolet Blazer 3Way Catalytic Convertor Assembly
Part Number: 25160211
Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic; Catalytic Converter, Converter
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1995 Chevrolet Blazer | 2 DOOR | 6 Cyl 4.3L
View related parts
Chevrolet Blazer 3Way Catalytic Convertor Assembly
Part Number: 25160212
Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic; Converter
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1995 Chevrolet Blazer | 4 DOOR | 6 Cyl 4.3L
View related parts
Chevrolet Blazer 3Way Catalytic Convertor Assembly (W/ Exhaust Manifold P
Part Number: 25146769
Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/ Exhaust Manifold P; Converter
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1994 Chevrolet Blazer | 1/2 TON | 8 Cyl 5.7L
View related parts
Chevrolet Blazer Catalytic Converter Assembly
Part Number: 25146311
Product Specifications
- Other Name: Converter Assembly, Catalytic; Converter
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1992-1993 Chevrolet Blazer | 1/2 TON | 8 Cyl 5.7L
View related parts
Chevrolet Blazer 3Way Catalytic Convertor Assembly (W/ Exhaust Manifold P
Part Number: 25146029
Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/ Exhaust Manifold P; Converter
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1994 Chevrolet Blazer | 1/2 TON | 8 Cyl 5.7L
View related parts
Chevrolet Blazer Exhaust Manifold Pipe Assembly *Marked Print
Part Number: 15052913
Product Specifications
- Other Name: Pipe Assembly, Exhaust Manifold *Marked Print
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2000 Chevrolet Blazer | 2 DOOR | 6 Cyl 4.3L
View related parts
Chevrolet Blazer Oxidation Catalytic Converter Assembly
Part Number: 15991749
Product Specifications
- Other Name: Converter Assembly, Oxidation Catalytic; Converter
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1994 Chevrolet Blazer | 1/2 TON | 8 Cyl 6.5L Diesel
View related parts
Chevrolet Blazer 3Way Catalytic Convertor
Part Number: 25314444
Product Specifications
- Other Name: Converter,3Way Catalytic; Catalytic Converter, Converter
- Replaces: 25152879
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1996-1999 Chevrolet Blazer | 2 DOOR | 6 Cyl 4.3L
View related parts
Chevrolet Blazer Exhaust Manifold Pipe Assembly *Marked Print
Part Number: 15052915
Product Specifications
- Other Name: Pipe Assembly, Exhaust Manifold *Marked Print
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2000 Chevrolet Blazer | 4 DOOR | 6 Cyl 4.3L
View related parts
Chevrolet Blazer Exhaust Manifold Pipe Assembly *Marked Print
Part Number: 15006097
Product Specifications
- Other Name: Pipe Assembly, Exhaust Manifold *Marked Print; Front Pipe
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2000 Chevrolet Blazer | 2 DOOR | 6 Cyl 4.3L
View related parts
Chevrolet Blazer 3-Way Catalytic Convertor Assembly
Part Number: 88968527
Product Specifications
- Other Name: Converter Asm,3Way Catalytic ; Converter, Catalytic Converter; Catalytic Converter, Converter
- Replaces: 25131438, 25130005, 25143420, 25130001
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1987-1991 Chevrolet Blazer | 1/2 TON | 8 Cyl 5.7L
View related parts
Chevrolet Blazer Exhaust Manifold Pipe Assembly *Marked Print
Part Number: 15744823
Product Specifications
- Other Name: Pipe Assembly, Exhaust Manifold *Marked Print; Front Pipe
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2001-2005 Chevrolet Blazer | 2 DOOR | 6 Cyl 4.3L

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Chevrolet Blazer Catalytic Converter Parts Questions & Experts Answers

Catalytic Converter
25314447
Q: What is the purpose of the catalytic converter in the exhaust system?
A: The catalytic converter is an emission control device added to the exhaust system to reduce pollutants from the exhaust gas stream. These systems are equipped with a single bed monolith catalytic converter. This monolithic converter contains a honeycomb mesh which is also coated with two types of catalysts. One type is the oxidation catalyst while the other type is a three-way catalyst that contains platinum and palladium. The three-way catalyst lowers the levels of oxides of nitrogen (NOx) as well as hydrocarbons (HG) and carbon monoxide (CO) emissions. The oxidation catalyst lowers the levels of hydrocarbons and carbon monoxide. If the PCM detects a reduction in the efficiency of the catalytic converter a code P0420 or P0430 will set. The test equipment for a catalytic converter is expensive and highly sophisticated. If you suspect the converter is malfunctioning, take it to a dealer service department or authorized emissions inspection facility for diagnosis and repair. Whenever the vehicle is raised for service of underbody components, check the converter for leaks, corrosion and other damage. If damage is discovered, the converter should be replaced. Because the converter is welded to the exhaust system, converter replacement requires removal of the exhaust pipe assembly. Take the vehicle, or the exhaust system, to a dealer service department or a muffler shop.