How to remove and replace a Catalytic Converter?

Remove bolts at the flange at the rear end. Then, loosen nuts and remove U-clamp to remove the catalyst. Slide the catalyst out of the outlet pipe. Replace all ring seals. In some cases, you'll have to disconnect an air line coming from the engine compartment before catalyst removal. In some cases, a hanger supports the converter via one of the flange bolts. Make sure the hanger gets properly reconnected. Also, be careful to retain all parts used to heat shield the converter and reinstall them. Make sure the converter is replaced for proper direction of flow and air supply connections.

Genuine Buick Regal Catalytic Converter

Cat. Converter

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31 Catalytic Converters found

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Buick Regal CONVERTER ASM,W/UP 3WAY CTLTC (KIT)
Part Number: 19420223
$1568.11 MSRP: $2352.50
You Save: $784.39 (34%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Catalytic Converter, Converter
- Replaces: 12645922, 12660225
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2014-2017 Buick Regal | CX 4 DOOR SEDAN, CXL 4 DOOR SEDAN, CXS 4 DOOR SEDAN | 4 Cyl 2.0L
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Buick Regal CONVERTER ASM,CTLTC (W/ EXH MANIF PIPE)<SPLIT>
Part Number: 19420298
$1107.88 MSRP: $1658.33
You Save: $550.45 (34%)
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Product Specifications
- Other Name: Catalytic Converter, Converter
- Replaces: 23135211
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2015-2017 Buick Regal | CX 4 DOOR SEDAN, CXL 4 DOOR SEDAN | 4 Cyl 2.4L
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Buick Regal Warm Up 3Way Catalytic Convertor Assembly
Part Number: 12674787
$1162.26 MSRP: $1740.36
You Save: $578.10 (34%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: W/UP 3Way Catalytic Convertor Assembly; Catalytic Converter
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2018-2020 Buick Regal | 1SC 4 DOOR HATCHBACK, 1SL 4 DOOR HATCHBACK, 1SL 4 DOOR STATION WAGON, BASE 4 DOOR HATCHBACK, BASE 4 DOOR STATION WAGON | 4 Cyl 2.0L
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Buick Regal CONVERTER ASM,3WAY CTLTC(W/EXH RR MANIF PIPE) "KIT"
Part Number: 19420100
$1957.70 MSRP: $2940.11
You Save: $982.41 (34%)
Ships in 1-3 Business Days
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Product Specifications
- Position: Rear
- Replaces: 21000000, 22794847
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2011-2014 Buick Regal | CX 4 DOOR SEDAN, CXL 4 DOOR SEDAN | 4 Cyl 2.4L
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Buick Regal CONVERTER ASM,3WAY CTLTC(W/EXH RR MANIF PIPE)"KIT"
Part Number: 19418940
$1271.42 MSRP: $1905.00
You Save: $633.58 (34%)
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Product Specifications
- Position: Rear
- Replaces: 22794842, 25886008, 20931546
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2011-2015 Buick Regal | CX 4 DOOR SEDAN, CXL 4 DOOR SEDAN | 4 Cyl 2.4L
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Buick Regal 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:
- 1996-2004 Buick Regal | 2 DOOR, 4 DOOR, CUSTOM, CUSTOM 2 DOOR, CUSTOM 4 DOOR, GL, GLX, GRAN SPORT 4 DOOR, GS, LIMITED, LIMITED 4 DOOR, LS, REGAL | 6 Cyl 3.8L
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Buick Regal 3Way Catalytic Convertor Assembly
Part Number: 12641644
$1318.40 MSRP: $1975.87
You Save: $657.47 (34%)
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Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic ; Converter, Catalytic Converter; Catalytic Converter, Converter
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2012-2013 Buick Regal | CXS 4 DOOR SEDAN | 4 Cyl 2.0L
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Buick Regal 3Way Catalytic Convertor Assembly (W/Exhaust Pipe)
Part Number: 84129723
$390.75 MSRP: $574.09
You Save: $183.34 (32%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic(W/Exhaust Pipe); Catalytic Converter, Preconverter
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2018-2020 Buick Regal | 1SX 4 DOOR HATCHBACK | 6 Cyl 3.6L
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Buick Regal 3Way Catalytic Convertor Assembly (W/Exhaust Pipe)
Part Number: 84462801
$558.28 MSRP: $829.39
You Save: $271.11 (33%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Converter Assembly, 3Way Ctltc(W/Exh Pipe); Catalytic Converter, Preconverter
- Replaces: 84215483
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2018-2020 Buick Regal | 1SX 4 DOOR HATCHBACK | 6 Cyl 3.6L
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Buick Regal 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: 10337610, 12564328
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2001-2003 Buick Regal | LS | 6 Cyl 3.8L
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Buick Regal Catalytic Convertor
Part Number: 24508098
Product Specifications
- Other Name: Converter; Catalytic Converter, Converter & Pipe
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1997-1999 Buick Regal | CUSTOM, GS, LIMITED, LS, REGAL | 6 Cyl 3.8L
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Buick Regal 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:
- 1982-1983 Buick Regal | 2 DOOR, 4 DOOR, STATION WAGON | 6 Cyl 3.8L, 6 Cyl 4.1L, 6 Cyl 4.3L Diesel, 8 Cyl 5.7L Diesel
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Buick Regal 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 Buick Regal | 2 DOOR, 4 DOOR, STATION WAGON | 6 Cyl 3.8L, 6 Cyl 4.1L, 6 Cyl 4.3L Diesel, 8 Cyl 5.7L Diesel
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Buick Regal Catalytic Converter Assembly
Part Number: 25103338
Product Specifications
- Other Name: Converter Assembly, Catalytic; Catalytic Converter
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1986-1987 Buick Regal | REGAL | 6 Cyl 3.8L
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Buick Regal Catalytic Converter
Part Number: 25128983
Product Specifications
- Other Name: Twc Converter; Converter
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1990-1992 Buick Regal | 2 DOOR, 4 DOOR, CUSTOM 2 DOOR, CUSTOM 4 DOOR, GRAN SPORT 2 DOOR, GRAN SPORT 4 DOOR, LIMITED, LIMITED 2 DOOR, LIMITED 4 DOOR | 6 Cyl 3.8L
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Buick Regal Catalytic Converter Assembly (W/Exhaust Manifold Pipe)
Part Number: 24501295
Product Specifications
- Other Name: Converter Assembly, Catalytic (W/Exhaust Manifold Pipe)
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1993 Buick Regal | 2 DOOR, 4 DOOR, CUSTOM 2 DOOR, CUSTOM 4 DOOR, GRAN SPORT 2 DOOR, GRAN SPORT 4 DOOR, LIMITED 2 DOOR, LIMITED 4 DOOR | 6 Cyl 3.8L
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Buick Regal 3Way Catalytic Convertor Assembly (W/ Exhaust Manifold P
Part Number: 24507885
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:
- 1997 Buick Regal | CUSTOM, LIMITED, LS, REGAL
View related parts
Buick Regal 3Way Catalytic Convertor Assembly (W/ Exhaust Manifold P
Part Number: 24504243
Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/ Exhaust Manifold P; Catalytic Converter, Converter
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1994-1995 Buick Regal | 2 DOOR, 4 DOOR, CUSTOM 2 DOOR, CUSTOM 4 DOOR, GRAN SPORT 2 DOOR, GRAN SPORT 4 DOOR, LIMITED 4 DOOR | 6 Cyl 3.8L
View related parts
Buick Regal 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:
- 1994-1996 Buick Regal | 2 DOOR, 4 DOOR, CUSTOM 2 DOOR, CUSTOM 4 DOOR, GRAN SPORT 2 DOOR, GRAN SPORT 4 DOOR, LIMITED 4 DOOR | 6 Cyl 3.1L
View related parts
Buick Regal 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:
- 1998-2000 Buick Regal | CUSTOM, GS, LIMITED, LS

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Buick Regal Catalytic Converter

The Catalytic Converter in Buick Regal vehicles is an essential part of the emission system and has one of the main functions of converting dangerous emissions such as; Carbon Monoxide, Hydrocarbons, and Oxides of Nitrogen into less dangerous products like; Water, Carbon Dioxide and Nitrogen respectively. Usually created using a single honeycomb substrate covered with catalyst things like platinum, palladium, and rhodium, the converter demulsifies the exhaust, decreases backpressure and limitation to amplify the engine efficiency. Two subcategories of the Catalytic Converter include direct fit and universal converters; these can be fitted to the Buick Regal by cutting pipes and clamping for the universal category, and by replacing the factory converter for the direct fit converters. Thus, thanks to the Catalytic Converter, it is possible to minimize emissions and, at the same time, enhance the performance of the engine and general functioning of the vehicle.

Each OEM Buick Regal 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.

Buick Regal Catalytic Converter Parts Questions & Experts Answers

Catalytic Converter
8999615
Q: How to remove and replace a Catalytic Converter?
A: Remove bolts at the flange at the rear end. Then, loosen nuts and remove U-clamp to remove the catalyst. Slide the catalyst out of the outlet pipe. Replace all ring seals. In some cases, you'll have to disconnect an air line coming from the engine compartment before catalyst removal. In some cases, a hanger supports the converter via one of the flange bolts. Make sure the hanger gets properly reconnected. Also, be careful to retain all parts used to heat shield the converter and reinstall them. Make sure the converter is replaced for proper direction of flow and air supply connections.