How to Replace a Catalytic Converter Safely and Effectively on GMC Yukon?

To replace the Catalytic Converter, first, begin with raising and supporting the vehicle. First, if present, remove the oil pan skid plate with the next step being to remove the transmission crossmember. If replacing three ways Catalytic Converter, remove heated oxygen (HO2S) sensors; otherwise, disconnect their harness connectors. Then, detach the nuts that connect the Catalytic Converter pipe (to the Exhaust Manifold and the Catalytic Converter to the Muffler) then pull out the Catalytic Converter pipe assembly from the vehicle, dispose the exhaust seals (2 and 3). For the installation, install new Exhaust Manifold seals (2 and 3) and attach the Catalytic Converter pipe to the exhaust manifolds. Fix the Catalytic Converter pipe on to the Exhaust Manifold nuts and firm them fully to 50 nm (37 lb. Ft.), then the Muffler with the Catalytic Converter nuts and tightening the clamp bolt fully to 45 nm (33 lb. Ft.). Reinstall the transmission crossmember. If the sensor is re-installed, then a special anti-seize compound, that is composed of the liquid graphite and glass beads, should be applied on the ho2s threads. If changing the three-way Catalytic Converter put on the heated oxygen (HO2S) sensors. Otherwise, connect the harness connectors. Lastly, install the oil pan skid plate if so equipped, lower the vehicle and check for exhaust leaks.

OEM GMC Yukon Catalytic Converter

Cat. Converter

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38 Catalytic Converters found

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GMC Yukon Catalytic Converter Part Number: 19418958
$1473.25 MSRP: $2292.42
You Save: $819.17 (36%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/Exhaust Manifold Pipe) "Kit"; Exhaust Pipe
- Replaces: 25904629, 20854457, 25904626
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007-2010 GMC Yukon | Denali | 8 Cyl 6.2 L FLEX, 8 Cyl 6.2 L GAS
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GMC Yukon Catalytic Converter Part Number: 19418939
$2077.18 MSRP: $3231.26
You Save: $1154.08 (36%)
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Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/Exhaust Manifold Pipe) "Kit"
- Replaces: 15127418, 25824120, 25904628
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007-2008 GMC Yukon | SLE, SLT | 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS
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GMC Yukon Catalytic Converter Part Number: 19420265
$1950.67 MSRP: $3039.55
You Save: $1088.88 (36%)
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Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/Exhaust Pipe)
- Replaces: 23111625, 84362281
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2015-2020 GMC Yukon | Denali, SLT | 8 Cyl 6.2 L FLEX, 8 Cyl 6.2 L GAS
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GMC Yukon Three-Way Catalytic Converter with Exhaust Pipe Part Number: 19420288
$1957.21 MSRP: $3049.78
You Save: $1092.57 (36%)
ADD TO CART
Product Specifications
- Other Name: CONVERTER ASM,3WAY CTLTC(W/EXH PIPE); Converter & Pipe; Converter, Catalytic Converter
- Replaces: 23486656
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2016-2020 GMC Yukon | SLE, SLT | 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS
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GMC Yukon Catalytic Converter Part Number: 19420284
$2186.41 MSRP: $3408.46
You Save: $1222.05 (36%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/Exhaust Pipe)
- Replaces: 22948166
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2015 GMC Yukon | Denali | 8 Cyl 6.2 L FLEX, 8 Cyl 6.2 L GAS
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GMC Yukon Catalytic Converter Part Number: 19418932
$2573.53 MSRP: $3954.87
You Save: $1381.34 (35%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/Exhaust Manifold Pipe) "Kit"; Exhaust Pipe
- Replaces: 25824121
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007-2009 GMC Yukon | Hybrid, SLE, SLT | 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L FULL HYBRID EV-GAS (FHEV)
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GMC Yukon Catalytic Converter Part Number: 19420109
$952.38 MSRP: $1423.80
You Save: $471.42 (34%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/Exhaust Manifold Pipe) "Kit"
- Replaces: 10395214, 15754087, 15755464
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2002-2006 GMC Yukon | Denali | 8 Cyl 6.0 L GAS
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GMC Yukon Converter, Catalytic Converter Part Number: 86781749
$1192.93 MSRP: $1786.61
You Save: $593.68 (34%)
Ships in 1-2 Business Days
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Product Specifications
- Replaces: 19420299, 85542368, 84520354, 84557805, 84655074
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2021-2025 GMC Yukon | AT4, Elevation, SLE, SLT | 8 Cyl 5.3 L GAS
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GMC Yukon Catalytic Converter Part Number: 85542368
$1192.93 MSRP: $1786.61
You Save: $593.68 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Converter, Catalytic Converter; Converter & Pipe
- Replaced by: 86781749
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2021-2023 GMC Yukon | AT4, SLE, SLT | 8 Cyl 5.3 L GAS
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GMC Yukon Catalytic Converter Part Number: 19418926
$2132.14 MSRP: $3212.74
You Save: $1080.60 (34%)
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Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/Exhaust Manifold Pipe) "Kit"
- Replaces: 15896590, 20854453
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2009-2014 GMC Yukon | Denali Hybrid, Hybrid, SLE, SLT | 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L FULL HYBRID EV-FLEX (FHEV)
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GMC Yukon Catalytic Converter Part Number: 19420276
$2092.37 MSRP: $3143.25
You Save: $1050.88 (34%)
ADD TO CART
Product Specifications
- Other Name: Converter Assembly, Warm Up 3Way Catalytic (W/ Exhaust Pipe); Converter & Pipe; Converter, Catalytic Converter
- Replaces: 20757674
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2015 GMC Yukon | SLE, SLT | 8 Cyl 5.3 L FLEX
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GMC Yukon Catalytic Converter Part Number: 19418941
$2109.42 MSRP: $3168.97
You Save: $1059.55 (34%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/Exhaust Manifold Pipe) "Kit"; Exhaust Pipe
- Replaces: 15905948, 20854454
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2009-2014 GMC Yukon | Denali Hybrid, Hybrid, SLE, SLT | 8 Cyl 4.8 L GAS, 8 Cyl 5.3 L FLEX, 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L FULL HYBRID EV-FLEX (FHEV)
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GMC Yukon Catalytic Converter Part Number: 84769824
$970.41 MSRP: $1444.48
You Save: $474.07 (33%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Converter, Catalytic Converter; Exhaust Pipe; Converter & Pipe
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2021 GMC Yukon | Denali | 8 Cyl 6.2 L GAS
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GMC Yukon Converter, Catalytic Converter Part Number: 86535357
$284.14 MSRP: $412.16
You Save: $128.02 (32%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Converter Assembly-Nitrogen Oxide Catalytic (W/Exhaust Pipe)
- Replaced by: 85764709
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2025 GMC Yukon | AT4, Denali, Denali Ultimate, Elevation | 6 Cyl 3.0 L DIESEL
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GMC Yukon Catalytic Converter Part Number: 85521780
$564.28 MSRP: $869.92
You Save: $305.64 (36%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Converter Assembly-Nitrogen Oxide Catalytic (W/Exhaust Pipe); Converter & Pipe; Converter, Catalytic Converter
- Replaces: 84749006
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2021-2024 GMC Yukon | Denali, Denali Ultimate, SLE, SLT | 6 Cyl 3.0 L DIESEL
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GMC Yukon Converter, Catalytic Converter Part Number: 85542367
$1328.17 MSRP: $1981.63
You Save: $653.46 (33%)
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:
- 2021-2024 GMC Yukon | AT4, Denali, Denali Ultimate | 8 Cyl 6.2 L GAS
View related parts
GMC Yukon Catalytic Converter Part Number: 40009139
$1146.15 MSRP: $1708.33
You Save: $562.18 (33%)
Product Specifications
- Other Name: Converter Assembly-Nitrogen Oxide Catalytic (W/Filter); Diesel Particulate Filter; Converter, Catalytic Converter
- Replaces: 12698485, 12700216, 12694479, 12696443, 40009042, 12709334
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2021-2024 GMC Yukon | Denali, Denali Ultimate, SLE, SLT | 6 Cyl 3.0 L DIESEL
View related parts
GMC Yukon Catalytic Converter Part Number: 40009042
$1146.15 MSRP: $1708.33
You Save: $562.18 (33%)
Product Specifications
- Other Name: Converter Assembly-Nitrogen Oxide Catalytic (W/Filter)
- Replaced by: 40009139
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2021 GMC Yukon | Denali, SLE, SLT | 6 Cyl 3.0 L DIESEL
View related parts
GMC Yukon Catalytic Converter Part Number: 19420124
$970.06 MSRP: $1443.93
You Save: $473.87 (33%)
Product Specifications
- Other Name: Converter Assembly, 3Way Catalytic (W/Exhaust Manifold Pipe) "Kit"
- Replaces: 10395213, 15754088, 15755463
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2002-2006 GMC Yukon | Denali | 8 Cyl 6.0 L GAS
View related parts
GMC Yukon Converter Assembly-Nitrogen Oxide Catalytic (W/Filter) Part Number: 40009487
$969.82 MSRP: $1443.57
You Save: $473.75 (33%)
Product Specifications
- Other Name: CONVERTER ASM-NOX CTLTC (W/ FLTR)
- Replaced by: 40009609
- Replaces: 40009280, 40009310
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2025 GMC Yukon | AT4, Denali, Denali Ultimate, Elevation | 6 Cyl 3.0 L DIESEL

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GMC Yukon 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 GMC Yukon parts. Prices are unbeatable, so you can keep more in your pocket. Every OEM GMC Yukon 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 Catalytic Converter in GMC Yukon automobiles is a vital part of the emission control system which changes toxic gases that are CO, HC, NOx and deposition them into less toxic products which include H2O, CO2, and Nitrogen. These converters have a honeycomb core and function via the use of catalysts such as platinum, palladium, and rhodium to initiate chemical reactions thus eliminating the emissions. Several reasons may cause converter failure and include engine related difficulties, impacts, or clogging hence leading a faulty converter with poor efficiency and high pollutant rates. GMC has powertrain converters that allow for maximum engine performance for different vehicles with available direct fit and universal converters. In general, Catalytic Converters provide significant contribution to minimize the emission of Harmful gases and maintain a standard for emission control in GMC Yukon vehicles.

GMC Yukon Catalytic Converter Parts and Q&A

Catalytic Converter
19418941
Q: How to Replace a Catalytic Converter Safely and Effectively on GMC Yukon?
A:
To replace the Catalytic Converter, first, begin with raising and supporting the vehicle. First, if present, remove the oil pan skid plate with the next step being to remove the transmission crossmember. If replacing three ways Catalytic Converter, remove heated oxygen (HO2S) sensors; otherwise, disconnect their harness connectors. Then, detach the nuts that connect the Catalytic Converter pipe (to the Exhaust Manifold and the Catalytic Converter to the Muffler) then pull out the Catalytic Converter pipe assembly from the vehicle, dispose the exhaust seals (2 and 3). For the installation, install new Exhaust Manifold seals (2 and 3) and attach the Catalytic Converter pipe to the exhaust manifolds. Fix the Catalytic Converter pipe on to the Exhaust Manifold nuts and firm them fully to 50 nm (37 lb. Ft.), then the Muffler with the Catalytic Converter nuts and tightening the clamp bolt fully to 45 nm (33 lb. Ft.). Reinstall the transmission crossmember. If the sensor is re-installed, then a special anti-seize compound, that is composed of the liquid graphite and glass beads, should be applied on the ho2s threads. If changing the three-way Catalytic Converter put on the heated oxygen (HO2S) sensors. Otherwise, connect the harness connectors. Lastly, install the oil pan skid plate if so equipped, lower the vehicle and check for exhaust leaks.