How to diagnose and replace a malfunctioning catalytic converter?

A catalytic converter is a type of emission control device in an exhaust system which brings down some pollutants within the exhaust gas stream. Two kinds of converters exist; oxidation catalyst and reduction catalyst. Take it to a dealer or authorized emission inspection facility for diagnosis and repair if you suspect that the converter on your vehicle is not functioning properly. Inspect the converter for leaks, corrosion, dents, and other damage when servicing underbody components. Replace the converter if any damage is found. Place a vacuum gauge on an intake manifold vacuum source and note the vacuum reading at idle and when the throttle is quickly opened and closed in order to test for a restricted converter. When compared to idle reading, if the fourth reading is over one in-Hg lower than this, it may be indicative of restricted exhaust systems. After raising the vehicle disconnect the downstream oxygen sensor, nuts securing upper and rear flanges of catalyst/exhaust pipe assembly are removed, old flange gaskets are discarded together with that assembly new gasket and fasteners are used to install items.

Genuine Chevrolet Monte Carlo Catalytic Converter

Cat. Converter

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30 Catalytic Converters found

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Chevrolet Monte Carlo Exhaust Crossover Pipe Assembly (W/Heat Shield)
Part Number: 24503125
$435.55 MSRP: $654.11
You Save: $218.56 (34%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Pipe Assembly, Exhaust Crossover (W/Heat Shield) ; Pipe, Exhaust Pipe
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1998-2005 Chevrolet Monte Carlo | IMPALA, LS, LT, LTZ, LUMINA, POLICE CAR, SS, Z34 | 6 Cyl 3.8L
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Chevrolet Monte Carlo 3Way Catalytic Convertor Assembly (W/ Exhaust Manifold P
Part Number: 25820195
$1604.48 MSRP: $2407.37
You Save: $802.89 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/ Exhaust Manifold P; Catalytic Converter, Converter & Pipe
- Replaces: 15780299
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2007 Chevrolet Monte Carlo | LS, LT, SS | 6 Cyl 3.5L, 6 Cyl 3.5L Flex, 6 Cyl 3.9L
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Chevrolet Monte Carlo 3Way Catalytic Convertor Assembly (W/ Exhaust Manifold P
Part Number: 25820197
$1734.28 MSRP: $2603.13
You Save: $868.85 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/ Exhaust Manifold P; Converter & Pipe
- Replaces: 15912308
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007 Chevrolet Monte Carlo | LS, LT, SS
View related parts
Chevrolet Monte Carlo 3Way Catalytic Convertor Assembly (W/ Exhaust Manifold P
Part Number: 15909238
$1836.67 MSRP: $2757.56
You Save: $920.89 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/ Exhaust Manifold P; Converter & Pipe
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007 Chevrolet Monte Carlo | LS, LT, SS | 6 Cyl 3.5L
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Chevrolet Monte Carlo 3Way Catalytic Convertor Assembly (W/ Exhaust Manifold P
Part Number: 15777196
$2206.51 MSRP: $3315.40
You Save: $1108.89 (34%)
ADD TO CART
Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/ Exhaust Manifold P; Catalytic Converter, Converter & Pipe
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007 Chevrolet Monte Carlo | LS, LT, SS | 8 Cyl 5.3L
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Chevrolet Monte Carlo 3Way Catalytic Convertor Assembly (W/ Exhaust Manifold P
Part Number: 10343187
$932.06 MSRP: $1402.65
You Save: $470.59 (34%)
Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/ Exhaust Manifold P; Catalytic Converter, Converter & Pipe
- Replaces: 12564328, 10337610
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2001-2003 Chevrolet Monte Carlo | IMPALA, LS, SS | 6 Cyl 3.8L
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Chevrolet Monte Carlo Catalytic Converter
Part Number: 24508105
Product Specifications
- Other Name: Converter; Converter & Pipe
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1998-1999 Chevrolet Monte Carlo | LS, LTZ, LUMINA, Z34 | 6 Cyl 3.1L
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Chevrolet Monte Carlo Catalytic Convertor
Part Number: 25056381
Product Specifications
- Other Name: Converter, Catalytic Converter; Catalytic Converter
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1984 Chevrolet Monte Carlo | EL CAMINO, MONTE CARLO | 6 Cyl 3.8L
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Chevrolet Monte Carlo Catalytic Convertor
Part Number: 25056790
Product Specifications
- Other Name: Converter, Catalytic Converter; Catalytic Converter, Converter
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1988 Chevrolet Monte Carlo | EL CAMINO, MONTE CARLO | 6 Cyl 4.3L
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Chevrolet Monte Carlo Catalytic Convertor
Part Number: 25057842
Product Specifications
- Other Name: Converter; Catalytic Converter
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1988 Chevrolet Monte Carlo | EL CAMINO, MONTE CARLO | 6 Cyl 4.3L
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Chevrolet Monte Carlo Catalytic Converter
Part Number: 8999615
Product Specifications
- Other Name: Converter
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1982-1984 Chevrolet Monte Carlo | CLASSIC 4 DOOR, CLASSIC STATION WAGON, EL CAMINO, MONTE CARLO | 6 Cyl 3.8L, 8 Cyl 4.4L, 8 Cyl 5.0L
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Chevrolet Monte Carlo Catalytic Convertor
Part Number: 8999642
Product Specifications
- Other Name: Converter, Catalytic Converter; Catalytic Converter, Converter, Pipe
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1982-1983 Chevrolet Monte Carlo | CLASSIC 4 DOOR, CLASSIC STATION WAGON, EL CAMINO, MONTE CARLO | 6 Cyl 3.8L, 8 Cyl 4.4L, 8 Cyl 5.0L
View related parts
Chevrolet Monte Carlo Catalytic Converter Assembly
Part Number: 25057843
Product Specifications
- Other Name: Converter Assembly, Catalytic; Catalytic Converter, Converter
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1985-1988 Chevrolet Monte Carlo | EL CAMINO, MONTE CARLO | 8 Cyl 5.0L
View related parts
Chevrolet Monte Carlo 3Way Catalytic Convertor Assembly (W/ Exhaust Manifold P
Part Number: 24506982
Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/ Exhaust Manifold P; Catalytic Converter, Converter, Converter & Pipe
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1997 Chevrolet Monte Carlo | LS, LTZ 4 DOOR, LUMINA, MONTE CARLO | 6 Cyl 3.1L
View related parts
Chevrolet Monte Carlo 3Way Catalytic Convertor Assembly (W/Exhaust Manifold Pipe)
Part Number: 24504613
Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/Exhaust Manifold Pipe); Catalytic Converter, Converter, Converter & Pipe
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1995-1996 Chevrolet Monte Carlo | LS, LS 4 DOOR, LUMINA, MONTE CARLO | 6 Cyl 3.1L
View related parts
Chevrolet Monte Carlo 3Way Catalytic Convertor Assembly (W/ Exhaust Manifold P
Part Number: 24508099
Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/ Exhaust Manifold P; Catalytic Converter, Converter & Pipe
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1998-1999 Chevrolet Monte Carlo | LS, LTZ, LUMINA, Z34 | 6 Cyl 3.8L
View related parts
Chevrolet Monte Carlo 3Way Catalytic Convertor Assembly (W/ Exhaust Manifold P
Part Number: 12563201
Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/ Exhaust Manifold P; Catalytic Converter, Converter & Pipe
- Replaces: 24507886
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2000 Chevrolet Monte Carlo | IMPALA, LS, SS | 6 Cyl 3.4L
View related parts
Chevrolet Monte Carlo Catalytic Converter Assembly (W/Exhaust
Part Number: 10185103
Product Specifications
- Other Name: Converter Assembly, Catalytic (W/Exhaust
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1995 Chevrolet Monte Carlo | LS, LS 4 DOOR, LUMINA, MONTE CARLO | 6 Cyl 3.4L
View related parts
Chevrolet Monte Carlo 3-Way Catalytic Convertor Assembly (W/ Exhaust Manifold Pipe & Resonator)
Part Number: 24506978
Product Specifications
- Other Name: Converter Asm,3Way Catalytic (W/ Exhaust Manifold Pipe & Resonator); Converter & Pipe
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1997 Chevrolet Monte Carlo | LS, LTZ 4 DOOR, LUMINA, MONTE CARLO | 6 Cyl 3.4L
View related parts
Chevrolet Monte Carlo 3Way Catalytic Convertor Assembly (W/ Exhaust Manifold P
Part Number: 24503805
Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/ Exhaust Manifold P; Catalytic Converter, Converter, Converter & Pipe
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1996 Chevrolet Monte Carlo | LS, LS 4 DOOR, LUMINA, MONTE CARLO | 6 Cyl 3.4L

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Chevrolet Monte Carlo Catalytic Converter Parts Questions & Experts Answers

3Way Catalytic Convertor Assembly (W/ Exhaust Manifold P
15909238
Q: How to diagnose and replace a malfunctioning catalytic converter?
A: A catalytic converter is a type of emission control device in an exhaust system which brings down some pollutants within the exhaust gas stream. Two kinds of converters exist; oxidation catalyst and reduction catalyst. Take it to a dealer or authorized emission inspection facility for diagnosis and repair if you suspect that the converter on your vehicle is not functioning properly. Inspect the converter for leaks, corrosion, dents, and other damage when servicing underbody components. Replace the converter if any damage is found. Place a vacuum gauge on an intake manifold vacuum source and note the vacuum reading at idle and when the throttle is quickly opened and closed in order to test for a restricted converter. When compared to idle reading, if the fourth reading is over one in-Hg lower than this, it may be indicative of restricted exhaust systems. After raising the vehicle disconnect the downstream Oxygen Sensor, nuts securing upper and rear flanges of catalyst/exhaust pipe assembly are removed, old flange gaskets are discarded together with that assembly new gasket and fasteners are used to install items.