How to replace the left side catalytic converter on GMC Acadia?

Before you can replace the left side catalytic converter, take off the heat shield for the exhaust manifold and loosen the catalytic converter to exhaust manifold nuts and the exhaust flexible pipe. After that, loosen the catalytic converter brace bolt and disconnect the catalytic converter from the exhaust manifold, disposing of the catalytic converter to exhaust manifold seal . For installation, put a new exhaust manifold seal on the catalytic converter and fasten it to the exhaust manifold. Make sure you put in the catalytic converter brace bolt and tighten it to 41 N.m (30 lb ft). Put the exhaust flexible pipe back in place and fasten the catalytic converter to the exhaust manifold nuts to 50 N.m (37 lb ft). In the end, attach the exhaust manifold heat shield.

How to replace the catalytic converter on the right side on GMC Acadia?

Start by removing the right-side exhaust flexible pipe to substitute the Catalytic Converter. Begin by removing Exhaust Manifold nuts from the Catalytic Converter then disconnect the Catalytic Converter from the Exhaust Manifold. The service technician needs to dispose of the Catalytic Converter to Exhaust Manifold seal. During installation position a new Catalytic Converter to Exhaust Manifold seal on the Catalytic Converter while securing the Catalytic Converter to the Exhaust Manifold. Secure the Catalytic Converter to the Exhaust Manifold by torquing its nuts up to 50 n.m (37 lb ft). The installation of the exhaust flexible pipe should be the last step.

OEM GMC Acadia Catalytic Converter

Cat. Converter

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20 Catalytic Converters found

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GMC Acadia Catalytic Converter Part Number: 12678254
$1018.16 MSRP: $1523.01
You Save: $504.85 (34%)
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Product Specifications
- Other Name: Converter, Catalytic Converter
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2018 GMC Acadia | SL, SLE, SLT | 4 Cyl 2.5 L GAS
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GMC Acadia Catalytic Converter, Driver Side Part Number: 84131556
$1115.07 MSRP: $1661.67
You Save: $546.60 (33%)
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Product Specifications
- Other Name: Converter, Catalytic Converter; Exhaust Pipe; Converter & Pipe
- Position: Driver Side
- Replaces: 23386840
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2017 GMC Acadia | Denali, SLE, SLT | 6 Cyl 3.6 L GAS
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GMC Acadia Catalytic Converter Part Number: 55516909
$435.17 MSRP: $681.03
You Save: $245.86 (37%)
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Product Specifications
- Other Name: Converter, Catalytic Converter; Converter & Pipe
- Replaces: 55511596
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2021-2023 GMC Acadia | Denali, SLE, SLT | 4 Cyl 2.0 L GAS
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GMC Acadia Catalytic Converter, Passenger Side Part Number: 19418920
$1146.84 MSRP: $1717.10
You Save: $570.26 (34%)
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Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/Exhaust Manifold Pipe) "Kit" See G; Converter & Pipe; Converter, Catalytic Converter; Converter, Exhaust Pipe
- Position: Passenger Side
- Replaces: 15903506
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2009-2011 GMC Acadia | Denali, SL, SLE, SLT | 6 Cyl 3.6 L GAS
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GMC Acadia Catalytic Converter, Passenger Side Part Number: 19420290
$796.04 MSRP: $1188.00
You Save: $391.96 (33%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/Exhaust Pipe); Converter & Pipe; Converter, Catalytic Converter; Exhaust Pipe
- Position: Passenger Side
- Replaces: 23229314
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2016 GMC Acadia | Denali, SL, SLE, SLT | 6 Cyl 3.6 L GAS
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GMC Acadia Catalytic Converter Part Number: 19418968
$536.31 MSRP: $826.15
You Save: $289.84 (36%)
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Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/Exhaust Pipe) "Kit"; Converter, Catalytic Converter; Converter, Exhaust Pipe
- Replaces: 20906951
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2012-2016 GMC Acadia | Denali, SL, SLE, SLT | 6 Cyl 3.6 L GAS
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GMC Acadia Catalytic Converter Part Number: 12676948
$944.00 MSRP: $1464.18
You Save: $520.18 (36%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Converter, Catalytic Converter
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2019-2021 GMC Acadia | SL, SLE, SLT | 4 Cyl 2.5 L GAS
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GMC Acadia Catalytic Converter Part Number: 19418938
$588.94 MSRP: $908.52
You Save: $319.58 (36%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/Exhaust Pipe) "Kit"; Converter, Catalytic Converter; Converter, Exhaust Pipe
- Replaces: 15903508
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2009-2011 GMC Acadia | Denali, SL, SLE, SLT | 6 Cyl 3.6 L GAS
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GMC Acadia Catalytic Converter Part Number: 23229312
$489.77 MSRP: $726.05
You Save: $236.28 (33%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Converter, Catalytic Converter
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2016 GMC Acadia | Denali, SL, SLE, SLT | 6 Cyl 3.6 L GAS
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GMC Acadia Catalytic Converter Part Number: 55516911
$1195.23 MSRP: $1790.09
You Save: $594.86 (34%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Converter, Catalytic Converter; Converter & Pipe
- Replaces: 55508201, 55512009
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2020 GMC Acadia | SLE, SLT | 4 Cyl 2.0 L GAS
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GMC Acadia Catalytic Converter, Passenger Side Part Number: 19419591
$1119.25 MSRP: $1675.49
You Save: $556.24 (34%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/Exhaust Manifold Pipe) "Kit"; Converter & Pipe; Converter, Catalytic Converter; Converter, Exhaust Pipe
- Position: Passenger Side
- Replaces: 15118654
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007-2008 GMC Acadia | SLE, SLT | 6 Cyl 3.6 L GAS
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GMC Acadia Catalytic Converter, Driver Side Part Number: 19418923
$1204.57 MSRP: $1804.18
You Save: $599.61 (34%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/Exhaust Manifold Pipe) "Kit"; Converter & Pipe; Converter, Catalytic Converter; Converter, Exhaust Pipe
- Position: Driver Side
- Replaces: 15903507
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2009-2011 GMC Acadia | Denali, SL, SLE, SLT | 6 Cyl 3.6 L GAS
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GMC Acadia Catalytic Converter, Driver Side Part Number: 19420111
$1088.00 MSRP: $1689.52
You Save: $601.52 (36%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/Exhaust Manifold Pipe) "Kit"; Converter & Pipe; Converter, Catalytic Converter; Converter, Exhaust Pipe
- Position: Driver Side
- Replaces: 25776079
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007-2008 GMC Acadia | SLE, SLT | 6 Cyl 3.6 L GAS
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GMC Acadia Catalytic Converter Part Number: 12674560
$655.74 MSRP: $1013.04
You Save: $357.30 (36%)
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Product Specifications
- Other Name: Converter, Catalytic Converter
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2017 GMC Acadia | SL, SLE, SLT | 4 Cyl 2.5 L GAS
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GMC Acadia Catalytic Converter, Driver Side Part Number: 19418929
$926.69 MSRP: $1385.05
You Save: $458.36 (34%)
ADD TO CART
Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/Exhaust Pipe) "Kit"; Converter & Pipe; Converter, Catalytic Converter; Converter, Exhaust Pipe
- Position: Driver Side
- Replaces: 20906952
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2012-2016 GMC Acadia | Denali, SL, SLE, SLT | 6 Cyl 3.6 L GAS
View related parts
GMC Acadia Catalytic Converter, Passenger Side Part Number: 19418927
$887.27 MSRP: $1375.38
You Save: $488.11 (36%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/Exhaust Pipe) "Kit"; Converter & Pipe; Converter, Catalytic Converter; Converter, Exhaust Pipe
- Position: Passenger Side
- Replaces: 20906953
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2012-2016 GMC Acadia | Denali, SL, SLE, SLT | 6 Cyl 3.6 L GAS
View related parts
GMC Acadia Catalytic Converter, Driver Side Part Number: 85132438
$167.77 MSRP: $250.78
You Save: $83.01 (34%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Converter, Catalytic Converter; Exhaust Pipe; Converter & Pipe
- Position: Driver Side
- Replaced by: 85821597
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2018-2023 GMC Acadia | AT4, Denali, SLE, SLT | 6 Cyl 3.6 L GAS
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GMC Acadia Catalytic Converter, Passenger Side Part Number: 85132441
$165.08 MSRP: $248.98
You Save: $83.90 (34%)
ADD TO CART
Product Specifications
- Other Name: Converter, Catalytic Converter; Converter & Pipe
- Position: Passenger Side
- Replaced by: 85821598
- Replaces: 85132439
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2018-2023 GMC Acadia | AT4, Denali, SLE, SLT | 6 Cyl 3.6 L GAS
View related parts
GMC Acadia Catalytic Converter, Driver Side Part Number: 19420303
$618.65 MSRP: $955.00
You Save: $336.35 (36%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/Exhaust Pipe); Converter & Pipe; Converter, Catalytic Converter
- Position: Driver Side
- Replaces: 23229313
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2016 GMC Acadia | Denali, SL, SLE, SLT | 6 Cyl 3.6 L GAS
View related parts
GMC Acadia Catalytic Converter, Passenger Side Part Number: 84131555
$737.67 MSRP: $1095.00
You Save: $357.33 (33%)
Product Specifications
- Other Name: Converter, Catalytic Converter; Exhaust Pipe; Converter & Pipe
- Position: Passenger Side
- Replaces: 23386841
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2017 GMC Acadia | Denali, SLE, SLT | 6 Cyl 3.6 L GAS

GMC Acadia Catalytic Converter

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The Catalytic Converter in GMC Acadia is part of exhaust and emission arrangement with the particular responsibility of converting toxic gases evolved during the burning process into less toxic ones. Catalysts- mainly platinum, palladium and rhodium- in it chemically convert mainly carbon monoxide (CO), hydrocarbons (HC) and oxides of nitrogen (NOx) into water, carbon dioxide (CO2) and nitrogen (N2). Since the production of GMC Acadia, different styles of catalytic converters have been used in its models such as the two way converter and the more sophisticated three way converter. The latter became standard by 1981 thereby improving on the reduction of NOx emissions. There are also performance catalytic converters which are intended for high flow to unleash the potential of the car engine while keeping the needed catalyst performance at the same time. These converters can be direct fit or universal where the direct fit ones are bolted into place while the universal type has to undergo some minor alterations before being fitted.

GMC Acadia Catalytic Converter Parts and Q&A

Catalytic Converter, Driver Side
19420111
Q: How to replace the left side catalytic converter on GMC Acadia?
A:
Before you can replace the left side catalytic converter, take off the heat shield for the exhaust manifold and loosen the catalytic converter to exhaust manifold nuts and the exhaust flexible pipe. After that, loosen the catalytic converter brace bolt and disconnect the catalytic converter from the exhaust manifold, disposing of the catalytic converter to exhaust manifold seal . For installation, put a new exhaust manifold seal on the catalytic converter and fasten it to the exhaust manifold. Make sure you put in the catalytic converter brace bolt and tighten it to 41 N.m (30 lb ft). Put the exhaust flexible pipe back in place and fasten the catalytic converter to the exhaust manifold nuts to 50 N.m (37 lb ft). In the end, attach the exhaust manifold heat shield.
Catalytic Converter, Passenger Side
19419591
Q: How to replace the catalytic converter on the right side on GMC Acadia?
A:
Start by removing the right-side exhaust flexible pipe to substitute the Catalytic Converter. Begin by removing Exhaust Manifold nuts from the Catalytic Converter then disconnect the Catalytic Converter from the Exhaust Manifold. The service technician needs to dispose of the Catalytic Converter to Exhaust Manifold seal. During installation position a new Catalytic Converter to Exhaust Manifold seal on the Catalytic Converter while securing the Catalytic Converter to the Exhaust Manifold. Secure the Catalytic Converter to the Exhaust Manifold by torquing its nuts up to 50 n.m (37 lb ft). The installation of the exhaust flexible pipe should be the last step.