Mufflers for 2018 GMC Sierra 1500
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![84723 - Exhaust: CalCat CARB Universal Catalytic Converter 2.5" Inlet (ID) 2.5"Outlet (ID) for Walker Exhaust Image](http://cdn-product-images.revolutionparts.io/assets/4d9476bd4247e7b1d0cdb5d74119947f.webp "84723 - Exhaust: CalCat CARB Universal Catalytic Converter 2.5" Inlet (ID) 2.5"Outlet (ID) for Walker Exhaust")
CalCat CARB Universal Catalytic Converter 2.5" Inlet (ID) 2.5"Outlet (ID)
Walker Exhaust
84723
Designed, tested and validated for assured compliance to meet CARB standards, Walker® CalCat® Universal Catalytic Converters are...
Positions: Front Left, Front Right
Fits Your Vehicle
![84802 - Exhaust: CalCat CARB Universal Catalytic Converter 3" Inlet (ID) 3"Outlet (ID) for Walker Exhaust Image](http://cdn-product-images.revolutionparts.io/assets/fde961481bede5b0bf3fe156e45645e6.webp "84802 - Exhaust: CalCat CARB Universal Catalytic Converter 3" Inlet (ID) 3"Outlet (ID) for Walker Exhaust")
CalCat CARB Universal Catalytic Converter 3" Inlet (ID) 3"Outlet (ID)
Walker Exhaust
84802
Designed, tested and validated for assured compliance to meet CARB standards, Walker® CalCat® Universal Catalytic Converters are...
Positions: Rear
$142.26
Fits Your Vehicle
![84719 - Exhaust: CalCat CARB Universal Catalytic Converter 2.5" Inlet (ID) 2.5"Outlet (ID) for Walker Exhaust Image](http://cdn-product-images.revolutionparts.io/assets/c475667a0cebb28aacc1bb4eeebb01da.webp "84719 - Exhaust: CalCat CARB Universal Catalytic Converter 2.5" Inlet (ID) 2.5"Outlet (ID) for Walker Exhaust")
CalCat CARB Universal Catalytic Converter 2.5" Inlet (ID) 2.5"Outlet (ID)
Walker Exhaust
84719
Designed, tested and validated for assured compliance to meet CARB standards, Walker® CalCat® Universal Catalytic Converters are...
Positions: Front Left, Front Right
$420.98
Fits Your Vehicle
![54944 - : Exhaust Pipe 3" Inlet (ID) 2.625" Outlet (OD) for Walker Exhaust Image](http://cdn-product-images.revolutionparts.io/assets/da35a57ea0fa869b40e5f62d3ab12a8f.webp "54944 - : Exhaust Pipe 3" Inlet (ID) 2.625" Outlet (OD) for Walker Exhaust")
Exhaust Pipe 3" Inlet (ID) 2.625" Outlet (OD)
Walker Exhaust
54944
Made from aluminized steel for durability, Walker® premium pipe is manufactured with precision benders and fixture checked to ensure a...
$101.75
CalCat CARB Direct Fit Catalytic Converter
Walker Exhaust
84779
Designed, tested and validated for assured compliance to meet CARB standards, Walker® CalCat® Direct-Fit Catalytic Converters are...
Fits Your Vehicle
![55686 - : Exhaust Pipe 3" Inlet (ID) 2.625" Outlet (OD) for Walker Exhaust Image](http://cdn-product-images.revolutionparts.io/assets/242c3ac393b0367a59f60bcacf0cfc11.webp "55686 - : Exhaust Pipe 3" Inlet (ID) 2.625" Outlet (OD) for Walker Exhaust")
Exhaust Pipe 3" Inlet (ID) 2.625" Outlet (OD)
Walker Exhaust
55686
Made from aluminized steel for durability, Walker® premium pipe is manufactured with precision benders and fixture checked to ensure a...
Federal / EPA Catalytic Converter - Direct Fit
AP Exhaust
645159
ARISTO's proprietary substrate chemistry yields highly efficient loadings for lower cost and better converter efficiency while our latest...
Fits Your Vehicle
Ultra EPA Direct Fit Catalytic Converter
Walker Exhaust
16977
Designed to comply with EPA standards while delivering premium performance with assured compliance, Walker® Ultra® Direct-Fit Catalytic...
Fits Your Vehicle
![55687 - : Direct Fit Exhaust Resonator 2.625" Inlet (OD) 2.75" Outlet (ID) for Walker Exhaust Image](http://cdn-product-images.revolutionparts.io/assets/fa40949dd95ec97761ce41c1c2639b83.webp "55687 - : Direct Fit Exhaust Resonator 2.625" Inlet (OD) 2.75" Outlet (ID) for Walker Exhaust")
Direct Fit Exhaust Resonator 2.625" Inlet (OD) 2.75" Outlet (ID)
Walker Exhaust
55687
Designed to fit, perform and sound like the original system, Walker® resonators use precise tuning technologies to deliver excellent flow...
![21919 - : Quiet-Flow SS Direct Fit Exhaust Muffler 2.625" Inlet (ID) 2.625" Outlet (ID) for Walker Exhaust Image](http://cdn-product-images.revolutionparts.io/assets/c2199bb3edd56a2e0c13e68b45b8834e.webp "21919 - : Quiet-Flow SS Direct Fit Exhaust Muffler 2.625" Inlet (ID) 2.625" Outlet (ID) for Walker Exhaust")
Quiet-Flow SS Direct Fit Exhaust Muffler 2.625" Inlet (ID) 2.625" Outlet (ID)
Walker Exhaust
21919
The only broad-market muffler with 100% stainless-steel construction, Walker® Quiet-Flow® SS mufflers feature precision fit, superior...
$94.11
Muffler - Challenge
AP Exhaust
2621
AP Challenge Muffler Our best Direct Fit OE replacement muffler; Constructed from 100% Aluminized Steel; Original Equipment Tuning...
Fits Your Vehicle
![50497 - Exhaust: Ultra EPA Direct Fit Catalytic Converter 3.625" Inlet (ID) 3" Outlet (OD) for Walker Exhaust Image](http://cdn-product-images.revolutionparts.io/assets/2dc75469d033ec5c112a8e72d61c381c.webp "50497 - Exhaust: Ultra EPA Direct Fit Catalytic Converter 3.625" Inlet (ID) 3" Outlet (OD) for Walker Exhaust")
Ultra EPA Direct Fit Catalytic Converter 3.625" Inlet (ID) 3" Outlet (OD)
Walker Exhaust
50497
Designed to comply with EPA standards while delivering premium performance with assured compliance, Walker® Ultra® Direct-Fit Catalytic...
$662.90
Fits Your Vehicle
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