What is a catalytic converter and how do you diagnose and repair it?

A catalytic converter is an emission control device that reduces certain pollutants. There are two types of converters: an oxidation catalyst that reduces hydrocarbons and carbon monoxide, and a reduction catalyst that reduces oxides of nitrogen. Vehicles are equipped with two three-way catalysts that can reduce all three pollutants. Whenever you raise the vehicle to service underbody components, inspect the converter for leaks, corrosion, dents, and other damage. The easiest way to check for a restricted converter is to use a vacuum gauge to diagnose the effect of a blocked exhaust on the intake vacuum. To remove the converter, raise the vehicle and place it securely on jack stands, disconnect the electrical connectors for the upstream and downstream oxygen sensors, remove all four sensors, remove the nuts at each of the upper flanges that secure the front exhaust pipe assembly to the exhaust manifold flanges, remove the nuts that secure the rear flange of the front exhaust pipe assembly to the rest of the exhaust system, and remove the front exhaust pipe assembly. To install the converter, coat the threads of the nuts and bolts with an anti-seize compound to facilitate future removal and tighten the nuts that secure the front exhaust pipe assembly to the exhaust manifold and to the rest of the exhaust system securely.

Genuine Chevrolet Suburban Catalytic Converter

Cat. Converter

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57 Catalytic Converters found

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Chevrolet Suburban CONVERTER ASM,3WAY CTLTC(W/EXH PIPE)
Part Number: 19420265
$2022.57 MSRP: $3037.97
You Save: $1015.40 (34%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Catalytic Converter, Converter & Pipe
- Replaces: 23111625, 84362281
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2019-2020 Chevrolet Suburban | 1500 4 DOOR UTILITY | 8 Cyl 6.2L
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Chevrolet Suburban CONVERTER ASM,3WAY CTLTC(W/EXH PIPE)
Part Number: 19420288
$1838.28 MSRP: $2760.00
You Save: $921.72 (34%)
ADD TO CART
Product Specifications
- Other Name: Catalytic Converter, Converter & Pipe
- Replaces: 23486656
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2016-2020 Chevrolet Suburban | 1500 4 DOOR UTILITY | 8 Cyl 5.3L
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Chevrolet Suburban CONVERTER ASM,W/UP 3WAY CTLTC (W/ EXH PIPE)
Part Number: 19420276
$1834.97 MSRP: $2755.00
You Save: $920.03 (34%)
ADD TO CART
Product Specifications
- Other Name: Catalytic Converter, Converter & Pipe
- Replaces: 20757674
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2015 Chevrolet Suburban | 1500 4 DOOR UTILITY | 8 Cyl 5.3L
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Chevrolet Suburban CONVERTER ASM,3WAY CTLTC (W/EXH MANIF PIPE)"KIT"
Part Number: 19418939
$1326.54 MSRP: $2996.63
You Save: $1670.09 (56%)
ADD TO CART
Product Specifications
- Other Name: Catalytic Converter, Converter & Pipe
- Replaces: 15127418, 25904628, 25824120
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007-2008 Chevrolet Suburban | 1/2 TON | 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L
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Chevrolet Suburban CONVERTER ASM-3WAY CTLTC(W/EXH PIPE)
Part Number: 85542368
$1267.30 MSRP: $1979.40
You Save: $712.10 (36%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Catalytic Converter, Converter & Pipe
- Replaced by: 86781749
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2021-2023 Chevrolet Suburban | 1/2 TON | 8 Cyl 5.3L
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Chevrolet Suburban CONVERTER ASM,3WAY CTLTC (W/EXH MANIF PIPE)"KIT"
Part Number: 19418932
$2255.33 MSRP: $3389.03
You Save: $1133.70 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Catalytic Converter, Converter & Pipe
- Replaces: 25824121
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007-2008 Chevrolet Suburban | 1/2 TON | 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L
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Chevrolet Suburban CONVERTER ASM,3WAY CTLTC (W/EXH MANIF PIPE) "KIT"
Part Number: 19420124
$946.55 MSRP: $1415.00
You Save: $468.45 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Catalytic Converter, Converter & Pipe, Front Pipe
- Replaces: 15754088, 15755463, 10395213
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2001-2006 Chevrolet Suburban | 1/2 TON, 1500 EXTENDED CAB STANDARD BOX, 4 DOOR 1/2 TON, CLASSIC 1500 EXTENDED CAB STANDARD BOX, EXT 1/2 TON, XL 1/2 TON, YUKON/DENALI | 8 Cyl 6.0L
View related parts
Chevrolet Suburban CONVERTER ASM-3WAY CTLTC(W/EXH PIPE)
Part Number: 86781749
$1320.74 MSRP: $1979.40
You Save: $658.66 (34%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Replaces: 84557805, 84520354, 19420299, 84655074, 85542368
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2021-2024 Chevrolet Suburban | 1/2 TON | 8 Cyl 5.3L
View related parts
Chevrolet Suburban Converter Assembly, 3Way Ctltc(W/Exh Pipe)
Part Number: 84769824
$1376.51 MSRP: $2063.53
You Save: $687.02 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Catalytic Converter, Converter & Pipe
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2021 Chevrolet Suburban | 1/2 TON | 8 Cyl 6.2L
View related parts
Chevrolet Suburban CONVERTER ASM,3WAY CTLTC (W/EXH MANIF PIPE)"KIT"
Part Number: 19418941
$2125.30 MSRP: $3192.92
You Save: $1067.62 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Catalytic Converter, Converter & Pipe
- Replaces: 15905948, 20854454
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2009-2014 Chevrolet Suburban | 1/2 TON | 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L
View related parts
Chevrolet Suburban CONVERTER ASM,3WAY CTLTC (W/EXH MANIF PIPE)"KIT"
Part Number: 19418926
$1724.85 MSRP: $2690.39
You Save: $965.54 (36%)
ADD TO CART
Product Specifications
- Other Name: Catalytic Converter, Converter & Pipe
- Replaces: 15896590, 20854453
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2009-2014 Chevrolet Suburban | 1/2 TON | 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L
View related parts
Chevrolet Suburban CONVERTER ASM,3WAY CTLTC (W/EXH MANIF PIPE) "KIT"
Part Number: 19420109
$1230.70 MSRP: $1843.58
You Save: $612.88 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Catalytic Converter, Converter & Pipe, Front Pipe
- Replaces: 10395214, 15755464, 15754087
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2001-2006 Chevrolet Suburban | 1/2 TON, 1500 EXTENDED CAB STANDARD BOX, 4 DOOR 1/2 TON, CLASSIC 1500 EXTENDED CAB STANDARD BOX, EXT 1/2 TON, XL 1/2 TON, YUKON/DENALI | 8 Cyl 6.0L
View related parts
Chevrolet Suburban CONVERTER ASM-NOX CTLTC (W/ FLTR)
Part Number: 40009042
$835.65 MSRP: $1247.73
You Save: $412.08 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Replaced by: 40009139
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2021-2022 Chevrolet Suburban | 1/2 TON | 6 Cyl 3.0L Diesel
View related parts
Chevrolet Suburban CONVERTER ASM-3WAY CTLTC(W/EXH PIPE)
Part Number: 85542367
$1018.72 MSRP: $1523.87
You Save: $505.15 (34%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2022-2024 Chevrolet Suburban | 1/2 TON | 8 Cyl 6.2L
View related parts
Chevrolet Suburban CONVERTER ASM,3WAY CTLTC (W/EXH MANIF PIPE) "KIT"
Part Number: 19420098
$992.35 MSRP: $1484.08
You Save: $491.73 (34%)
ADD TO CART
Product Specifications
- Other Name: Catalytic Converter, Converter & Pipe
- Replaces: 15782486, 19208464
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006 Chevrolet Suburban | 1/2 TON | 8 Cyl 5.3L, 8 Cyl 5.3L Flex
View related parts
Chevrolet Suburban CONVERTER ASM-NOX CTLTC (W/ FLTR)
Part Number: 40009139
$835.65 MSRP: $1247.73
You Save: $412.08 (34%)
ADD TO CART
Product Specifications
- Other Name: Catalytic Converter, Diesel Particulate Filter
- Replaces: 12696443, 12709334, 12700216, 12698485, 12694479, 40009042
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2021-2024 Chevrolet Suburban | 1/2 TON | 6 Cyl 3.0L Diesel
View related parts
Chevrolet Suburban CONVERTER ASM-NOX CTLTC (W/ EXH PIPE)
Part Number: 85521780
$212.64 MSRP: $306.67
You Save: $94.03 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Catalytic Converter, Converter & Pipe
- Replaces: 84749006
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2021-2024 Chevrolet Suburban | 1/2 TON | 6 Cyl 3.0L Diesel
View related parts
Chevrolet Suburban CONVERTER ASM,3WAY CTLTC (W/EXH MANIF PIPE)"KIT"
Part Number: 19418955
$2049.82 MSRP: $3218.12
You Save: $1168.30 (37%)
ADD TO CART
Product Specifications
- Other Name: Catalytic Converter, Converter & Pipe
- Replaces: 25904630
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2008 Chevrolet Suburban | 1/2 TON | 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L
View related parts
Chevrolet Suburban CONVERTER ASM-3WAY CTLTC(W/EXH PIPE)
Part Number: 85558398
$129.40 MSRP: $194.30
You Save: $64.90 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Catalytic Converter, Converter & Pipe
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2023-2024 Chevrolet Suburban | 1/2 TON | 8 Cyl 6.2L
View related parts
Chevrolet Suburban CONVERTER ASM-3WAY CTLTC(W/EXH PIPE)
Part Number: 85558399
$140.50 MSRP: $210.97
You Save: $70.47 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Catalytic Converter, Converter & Pipe
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2023-2024 Chevrolet Suburban | 1/2 TON | 8 Cyl 6.2L

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1-20 of 57 Results

Chevrolet Suburban Catalytic Converter

The Chevrolet Suburban Catalytic Converter is a vehicle exhaust system part required legally since 1975 after passing the law that aimed at limiting emissions. Through the use of catalysts this device aids in chemical reactions that help in the conversion of some of the SOBs into less dangerous compounds. There are many types of Catalytic Converters used over the years: Originally, there were the two-way Catalytic Converter that oxidized both CO and HC while the later what is called three-way Catalytic Converter reduced both CO and HC and oxidized NOx. Such converters often include ceramic honeycombs using such metals as platinum, palladium, and rhodium and function premier at a stoichiometric air/fuel ratio. By using Catalytic Converters, Chevrolet Suburban vehicles have immensely reduced the emission of unpleasant gasses thereby playing a crucial role in environmental conservation as well as the emission standards.

Each OEM Chevrolet Suburban Catalytic Converter we offer is competitively priced and comes with the assurance of the manufacturer's warranty for the part. Furthermore, we guarantee the speedy delivery of your orders right to your doorstep. Our hassle-free return policy is also in place for your peace of mind.

Chevrolet Suburban Catalytic Converter Parts Questions & Experts Answers

3Way Catalytic Convertor Assembly (W/ Exhaust Manifold P
20854453
Q: What is a catalytic converter and how do you diagnose and repair it?
A: A catalytic converter is an emission control device that reduces certain pollutants. There are two types of converters: an oxidation catalyst that reduces hydrocarbons and carbon monoxide, and a reduction catalyst that reduces oxides of nitrogen. Vehicles are equipped with two three-way catalysts that can reduce all three pollutants. Whenever you raise the vehicle to service underbody components, inspect the converter for leaks, corrosion, dents, and other damage. The easiest way to check for a restricted converter is to use a vacuum gauge to diagnose the effect of a blocked exhaust on the intake vacuum. To remove the converter, raise the vehicle and place it securely on jack stands, disconnect the electrical connectors for the upstream and downstream Oxygen Sensors, remove all four sensors, remove the nuts at each of the upper flanges that secure the front exhaust pipe assembly to the exhaust manifold flanges, remove the nuts that secure the rear flange of the front exhaust pipe assembly to the rest of the exhaust system, and remove the front exhaust pipe assembly. To install the converter, coat the threads of the nuts and bolts with an anti-seize compound to facilitate future removal and tighten the nuts that secure the front exhaust pipe assembly to the exhaust manifold and to the rest of the exhaust system securely.

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