How to replace a catalytic converter on Buick LaCrosse?

First remove Catalytic Converter by lifting up the vehicle and support it. Secondly, disconnect the heated Oxygen Sensor (HO2S) electrical connector. Sweep the nuts off the exhaust manifold pipe and the exhaust manifold pipe gasket . Support on the exhaust system then remove the Catalytic Converter nuts and hangers then Catalytic Converter itself and its gasket in that order. Check and clean the mating areas of the exhaust manifold and exhaust pipe gasket remove the ho2s. Starting with installation, install the ho2s while ensuring the Catalytic Converter assembly is supported to prevent internal damage with vertical movement at most of 6 degrees. Mount the new gasket onto the exhaust pipe studs then support and mount the Catalytic Converter and selling the nuts till it is tightened to 60nm (44 lb ft). Next, change the new exhaust manifold pipe gasket and exhaust manifold pipe stud nuts , which should be tightened on 35 n.m (26 lb ft). Replace the Catalytic Converter hangers, remove the support from the exhaust system, and also put the ho2s electrical connector. Lastly, check the exhaust system against leakage and underbody contact before dropping the vehicle.

OEM Buick LaCrosse Catalytic Converter

Cat. Converter

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24 Catalytic Converters found

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Buick LaCrosse Catalytic Converter Part Number: 19332467
$1033.00 MSRP: $1547.90
You Save: $514.90 (34%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Converter, Catalytic Converter; Exhaust Pipe; Converter & Pipe; Converter, Exhaust Pipe
- Replaces: 15861402
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007-2009 Buick LaCrosse | CX, CXL | 6 Cyl 3.8 L GAS
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Buick LaCrosse Catalytic Converter Part Number: 15861401
$1042.14 MSRP: $1552.17
You Save: $510.03 (33%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Converter Assembly-3Way Catalytic (W/Exhaust Manifold P; Exhaust Pipe; Converter & Pipe; Converter, Catalytic Converter; Converter, Exhaust Pipe
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006 Buick LaCrosse | CX, CXL | 6 Cyl 3.8 L GAS
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Buick LaCrosse Catalytic Converter Part Number: 15777196
$2216.46 MSRP: $3315.40
You Save: $1098.94 (34%)
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Product Specifications
- Other Name: Converter Assembly-3Way Catalytic (W/Exhaust Manifold P; Exhaust Pipe; Converter & Pipe; Converter, Catalytic Converter; Converter, Exhaust Pipe
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2008-2009 Buick LaCrosse | Super | 8 Cyl 5.3 L GAS
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Buick LaCrosse Catalytic Converter, Driver Side Part Number: 84462801
$560.77 MSRP: $829.39
You Save: $268.62 (33%)
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Product Specifications
- Other Name: Converter, Catalytic Converter; Preconverter
- Position: Driver Side
- Replaces: 84215483
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2018-2019 Buick LaCrosse | Avenir, Essence, Preferred, Premium, Sport Touring | 6 Cyl 3.6 L GAS
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Buick LaCrosse Converter & Pipe, Rear Part Number: 19418933
$999.97 MSRP: $1488.85
You Save: $488.88 (33%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/Exhaust Rear Manifold Pipe) "Kit"; Converter, Catalytic Converter
- Position: Rear
- Replaces: 20893999, 20907414, 20805599
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2010 Buick LaCrosse | CX, CXL | 6 Cyl 3.0 L GAS
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Buick LaCrosse Catalytic Converter, Rear Part Number: 19420100
$1205.44 MSRP: $1797.35
You Save: $591.91 (33%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/Exhaust Rear Manifold Pipe) "Kit"; Exhaust Pipe; Converter & Pipe; Converter; Preconverter; Converter, Catalytic Converter
- Position: Rear
- Replaces: 21000000, 22794847
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2010-2016 Buick LaCrosse | Base, Convenience, CX, CXL, Leather, Premium | 4 Cyl 2.4 L GAS, 4 Cyl 2.4 L MILD HYBRID EV-GAS (MHEV)
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Buick LaCrosse Cross Over Part Number: 24503125
$437.51 MSRP: $654.11
You Save: $216.60 (34%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Pipe, Exhaust Pipe; Crossover Pipe; Front Pipe; Cross Over Pipe; Exhaust Pipe
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2009 Buick LaCrosse | CX, CXL | 6 Cyl 3.8 L GAS
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Buick LaCrosse Catalytic Converter Part Number: 15861399
$1892.60 MSRP: $2838.58
You Save: $945.98 (34%)
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Product Specifications
- Other Name: Converter Assembly-3Way Catalytic (W/Exhaust Manifold P; Exhaust Pipe; Converter & Pipe; Converter, Catalytic Converter; Converter, Exhaust Pipe
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2009 Buick LaCrosse | CX, CXL | 6 Cyl 3.8 L GAS
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Buick LaCrosse Exhaust Manifold Part Number: 22737796
$906.77 MSRP: $1348.90
You Save: $442.13 (33%)
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Product Specifications
- Other Name: Converter, Catalytic Converter; Preconverter; Catalytic Converter
- Position: Rear
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2014-2016 Buick LaCrosse | Base, Leather, Premium, Sport Touring | 6 Cyl 3.6 L FLEX, 6 Cyl 3.6 L GAS
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Buick LaCrosse Catalytic Converter, Passenger Side Part Number: 84129723
$459.57 MSRP: $677.42
You Save: $217.85 (33%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Converter, Catalytic Converter; Preconverter
- Position: Passenger Side
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2018-2019 Buick LaCrosse | Avenir, Essence, Preferred, Premium, Sport Touring | 6 Cyl 3.6 L GAS
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Buick LaCrosse Catalytic Converter Part Number: 19419593
$800.82 MSRP: $1189.82
You Save: $389.00 (33%)
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Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/Exhaust Front Manifold Pipe) "Kit"; Exhaust Manifold; Preconverter; Converter, Catalytic Converter
- Replaces: 20965402
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2012-2016 Buick LaCrosse | Base, Convenience, Leather, Premium, Sport Touring, Touring | 6 Cyl 3.6 L FLEX, 6 Cyl 3.6 L GAS
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Buick LaCrosse Catalytic Converter Part Number: 20965398
$802.62 MSRP: $1192.52
You Save: $389.90 (33%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Converter, Catalytic Converter; Exhaust Manifold; Preconverter
- Position: Rear
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2012-2016 Buick LaCrosse | Base, Convenience, Leather, Premium, Sport Touring, Touring | 6 Cyl 3.6 L FLEX, 6 Cyl 3.6 L GAS
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Buick LaCrosse Catalytic Converter, Rear Part Number: 19418940
$1343.11 MSRP: $2004.07
You Save: $660.96 (33%)
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Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/Exhaust Rear Manifold Pipe) "Kit"; Converter & Pipe; Converter; Preconverter; Converter, Catalytic Converter
- Position: Rear
- Replaces: 22794842, 25886008, 20931546
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2010-2016 Buick LaCrosse | Base, Convenience, CX, CXL, Leather, Premium | 4 Cyl 2.4 L GAS, 4 Cyl 2.4 L MILD HYBRID EV-GAS (MHEV)
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Buick LaCrosse Catalytic Converter Part Number: 19418943
$1104.89 MSRP: $1646.38
You Save: $541.49 (33%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/Exhaust Front Manifold Pipe) "Kit"; Converter & Pipe; Converter, Catalytic Converter
- Replaces: 20805600, 20894012
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2010 Buick LaCrosse | CX, CXL | 6 Cyl 3.0 L GAS
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Buick LaCrosse Exhaust Manifold Part Number: 22737797
$895.03 MSRP: $1331.28
You Save: $436.25 (33%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Converter, Catalytic Converter; Preconverter; Catalytic Converter
- Position: Rear
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2014-2016 Buick LaCrosse | Base, Leather, Premium, Sport Touring | 6 Cyl 3.6 L FLEX, 6 Cyl 3.6 L GAS
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Buick LaCrosse Catalytic Converter Part Number: 12676948
$983.54 MSRP: $1464.18
You Save: $480.64 (33%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Converter, Catalytic Converter
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2018-2019 Buick LaCrosse | Base, Essence, Preferred, Premium | 4 Cyl 2.5 L MILD HYBRID EV-GAS (MHEV)
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Buick LaCrosse Catalytic Converter Part Number: 15212752
Product Specifications
- Other Name: Converter Assembly-3Way Catalytic (W/Exhaust Manifold P; Exhaust Pipe; Converter & Pipe; Converter, Catalytic Converter; Converter, Exhaust Pipe
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2007 Buick LaCrosse | CXS | 6 Cyl 3.6 L GAS
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Buick LaCrosse Catalytic Converter, Rear Part Number: 19418936
$757.65 MSRP: $1125.00
You Save: $367.35 (33%)
Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/Exhaust Rear Manifold Pipe) "Kit"; Converter & Pipe; Converter, Catalytic Converter
- Position: Rear
- Replaces: 20907468, 20893984, 25798282
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2010-2011 Buick LaCrosse | CX, CXL, CXS | 6 Cyl 3.6 L GAS
View related parts
Buick LaCrosse Catalytic Converter Part Number: 15848640
Product Specifications
- Other Name: Converter Assembly-3Way Catalytic (W/Exhaust Manifold P; Exhaust Pipe; Converter & Pipe; Converter, Catalytic Converter; Converter, Exhaust Pipe
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007-2008 Buick LaCrosse | CXS | 6 Cyl 3.6 L GAS
View related parts
Buick LaCrosse Catalytic Converter Part Number: 15861400
Product Specifications
- Other Name: Converter Assembly-3Way Catalytic (W/Exhaust Manifold P; Exhaust Pipe; Converter & Pipe; Converter, Catalytic Converter; Converter, Exhaust Pipe
- Replaces: 10348509, 10339773
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2006 Buick LaCrosse | CX, CXL | 6 Cyl 3.8 L GAS

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Buick LaCrosse Catalytic Converter

Want to cut long-term maintenance and repair costs? Choose OEM Catalytic Converter. Those parts deliver top durability you can trust. On our site, you'll find a huge catalog of genuine Buick LaCrosse parts. Prices are unbeatable, so you can keep more in your pocket. Every OEM Buick LaCrosse Catalytic Converter includes a manufacturer's warranty. You can also get an easy return policy that keeps buying risk free. Fast delivery, get your car on the road quickly. It's simple to search, compare, and order. Stop guessing about quality or fit. Order today and save with parts that last.

The Buick LaCrosse Catalytic Converter is one of the important parts of the vehicle emissions system and it provides durability as well as efficiency. Through the use of this improved Catalytic Converter the undesirable gases are as follows: Carbon Monoxide, Hydrocarbons and Oxides of Nitrogen are reduced on emissions and converted into; water and Carbon Dioxide thus making the Buick LaCrosse even safer and efficient. Suitable to fit a whole line of LaCrosse models, the Catalytic Converter comes equipped with a contemporary honeycomb structure of the converter that offers the most favorable conditions for catalytic reactions, thus allowing the car to conform to the highest emission standards as well as deliver enhanced engine performance. The choice of the high-quality material of the catalysts which include platinum, palladium, and rhodium shows Buick LaCrosse's environmental concern. Also, it is responsible for removing chemical by-products while also having an immense contribution to controlling back pressure from exhaust, thus enhancing the performance of an engine and smoothness of the drive. Some remarkable features of Buick LaCrosse Catalytic Converter include; The Buick LaCrosse Catalytic Converter is built very strong to ensure that it can withstand the road abuse and wearing away by objects that are on the ROAD that may cause the catalytic converter to failure by either being swept by the road or being poisoned by either excessive usage or through poisoning. Given that the Buick LaCrosse has one of the highest safety rates for its automobiles, with provisions such as multiple airbags, the reliability of the Catalytic Converter improves the company's reputation in the market. To summarize, the Buick LaCrosse Catalytic Converter is clearly one of the most important factors that addresses performance and the company's commitment toward environmental protection, establishing the Buick LaCrosse as a competitive mid-size sedan.

Buick LaCrosse Catalytic Converter Parts Questions & Experts Answers

Catalytic Converter
19332467
Q: How to replace a catalytic converter on Buick LaCrosse?
A:
First remove Catalytic Converter by lifting up the vehicle and support it. Secondly, disconnect the heated Oxygen Sensor (HO2S) electrical connector. Sweep the nuts off the exhaust manifold pipe and the exhaust manifold pipe gasket . Support on the exhaust system then remove the Catalytic Converter nuts and hangers then Catalytic Converter itself and its gasket in that order. Check and clean the mating areas of the exhaust manifold and exhaust pipe gasket remove the ho2s. Starting with installation, install the ho2s while ensuring the Catalytic Converter assembly is supported to prevent internal damage with vertical movement at most of 6 degrees. Mount the new gasket onto the exhaust pipe studs then support and mount the Catalytic Converter and selling the nuts till it is tightened to 60nm (44 lb ft). Next, change the new exhaust manifold pipe gasket and exhaust manifold pipe stud nuts , which should be tightened on 35 n.m (26 lb ft). Replace the Catalytic Converter hangers, remove the support from the exhaust system, and also put the ho2s electrical connector. Lastly, check the exhaust system against leakage and underbody contact before dropping the vehicle.