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AP Exhaust 645155 Catalytic Converter

Brand	AP Exhaust 645155
Inlet Type A	3 bolt welded flange
Type	Federal / epa direct-fit
Fits	Cadillac, Chevrolet, and GMC · 40 vehicles

Direct-fit replacement. Built to exact OE dimensions for straightforward installation.

Federal / EPA compliant. Meets emissions requirements for approved use.

Advanced substrate chemistry. Delivers efficient converter performance at a lower cost.

Cross-references 22948166 for the same application. See all 1.

$871.14Free shipping

In stock · usually ships same day before 1pm CST

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Free returns within 60 days if it doesn't fit when fitment is verified.

Not what you need? See all Catalytic Converter options

Direct-Fit Catalytic Converter for GM Trucks and SUVs

AP Exhaust 645155 is a Federal / EPA direct-fit catalytic converter built for exact OE dimensions and fitment. It is engineered for select Cadillac, Chevrolet, and GMC applications, including Escalade, Tahoe, Yukon, Silverado 1500, and Sierra 1500 models.

With a 3 bolt welded flange inlet and AP Exhaust’s advanced manufacturing process, this converter is built for consistent installation fit and efficient exhaust flow. Part number 645155 is a practical replacement for vehicles needing a direct-fit emissions solution.

Key Features

Federal / EPA direct-fit catalytic converter
3 bolt welded flange inlet type
Built to OE dimensions for fitment accuracy
Designed for select Cadillac Escalade and Escalade ESV applications
Fits Chevrolet Tahoe, Silverado 1500, and GMC Yukon, Yukon XL, and Sierra 1500 applications
Cross-reference: 22948166

Fitment Details

Fits 2015-2020 Cadillac Escalade, N/A; Direct Fit; Federal and California Emissions.
Fits 2015-2020 Cadillac Escalade ESV, N/A; Direct Fit; Federal and California Emissions.
Fits 2018-2020 Chevrolet Tahoe, N/A; Direct Fit; Federal and California Emissions.
Fits 2014-2018 Chevrolet Silverado 1500, N/A; Direct Fit; Federal and California Emissions.
Fits 2015-2020 GMC Yukon, N/A; Direct Fit; Federal and California Emissions.
Fits 2016-2020 GMC Yukon XL, N/A; Direct Fit; Federal and California Emissions.
Fits 2014-2018 GMC Sierra 1500, N/A; Direct Fit; Federal and California Emissions.
Fits 2015 GMC Yukon, N/A; Direct Fit; Federal and California Emissions.
Fits 2015 GMC Yukon XL, N/A; Direct Fit; Federal and California Emissions.

What This Converter Helps Address

Failed or inefficient catalytic converter operation
Exhaust restriction caused by a worn substrate
Check engine light concerns related to catalyst performance
Emissions compliance issues on supported GM applications
Fitment problems from non-direct replacement parts

Installation Notes

Verify the vehicle’s emissions configuration and confirm local regulations before installation. This part is listed for Federal and California emissions applications, with restrictions noted for vehicles licensed in CA, CO, ME, and NY. Confirm the inlet style and OE-style mounting points before beginning service. Part number 645155 is also referenced as 22948166 for the same application.

Quality Assurance

AP Exhaust uses advanced manufacturing methods, including automated workstations, spinner welding equipment, and high-speed production lines, to build converters to OE dimensions and fitment standards. The substrate chemistry is formulated for efficient loading and converter performance while supporting competitive replacement pricing.

This part fits 40 vehicles

Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

Year	Make	Model	Liters	Cylinders	Notes
2020	Cadillac	Escalade	6.2L	V8	Direct Fit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
2020	Cadillac	Escalade ESV	6.2L	V8	Direct Fit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
2020	Chevrolet	Suburban	6.2L	V8	Direct Fit; Suburban; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
2020	Chevrolet	Tahoe	6.2L	V8	Direct Fit; Tahoe; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
2020	GMC	Yukon	6.2L	V8	Direct Fit; Yukon; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
2020	GMC	Yukon XL	6.2L	V8	Direct Fit; Yukon XL; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
2019	Cadillac	Escalade	6.2L	V8	Direct Fit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
2019	Cadillac	Escalade ESV	6.2L	V8	Direct Fit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
2019	Chevrolet	Suburban	6.2L	V8	Direct Fit; Suburban; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
2019	Chevrolet	Tahoe	6.2L	V8	Direct Fit; Tahoe; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
2019	GMC	Yukon	6.2L	V8	Direct Fit; Yukon; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
2019	GMC	Yukon XL	6.2L	V8	Direct Fit; Yukon XL; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
2018	Cadillac	Escalade	6.2L	V8	Direct Fit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
2018	Cadillac	Escalade ESV	6.2L	V8	Direct Fit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
2018	Chevrolet	Silverado 1500	6.2L	V8	Direct Fit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
2018	Chevrolet	Tahoe	6.2L	V8	Direct Fit; Tahoe; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
2018	GMC	Sierra 1500	6.2L	V8	Direct Fit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
2018	GMC	Yukon	6.2L	V8	Direct Fit; Yukon; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
2018	GMC	Yukon XL	6.2L	V8	Direct Fit; Yukon XL; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
2017	Cadillac	Escalade	6.2L	V8	Direct Fit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
2017	Cadillac	Escalade ESV	6.2L	V8	Direct Fit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
2017	Chevrolet	Silverado 1500	6.2L	V8	Direct Fit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
2017	GMC	Sierra 1500	6.2L	V8	Direct Fit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
2017	GMC	Yukon	6.2L	V8	Direct Fit; Yukon; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
2017	GMC	Yukon XL	6.2L	V8	Direct Fit; Yukon XL; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
2016	Cadillac	Escalade	6.2L	V8	Direct Fit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
2016	Cadillac	Escalade ESV	6.2L	V8	Direct Fit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
2016	Chevrolet	Silverado 1500	6.2L	V8	Direct Fit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
2016	GMC	Sierra 1500	6.2L	V8	Direct Fit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
2016	GMC	Yukon	6.2L	V8	Direct Fit; Yukon; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
2016	GMC	Yukon XL	6.2L	V8	Direct Fit; Yukon XL; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
2015	Cadillac	Escalade	6.2L	V8	Direct Fit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
2015	Cadillac	Escalade ESV	6.2L	V8	Direct Fit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
2015	Chevrolet	Silverado 1500	6.2L	V8	Direct Fit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
2015	GMC	Sierra 1500	6.2L	V8	Direct Fit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
2015	GMC	Yukon	6.2L	V8	Direct Fit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
2015	GMC	Yukon	6.2L	V8	Direct Fit; Yukon; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
2015	GMC	Yukon XL	6.2L	V8	Direct Fit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
2014	Chevrolet	Silverado 1500	6.2L	V8	Direct Fit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
2014	GMC	Sierra 1500	6.2L	V8	Direct Fit; Federal and California Emissions. Not For Sale or Use on vehicles licensed in the state of CA, CO, ME & NY. Restrictions may apply in other states. Check with your state authority for details.
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Directly replaces or cross-references 1 part number

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.

22948166