Mufflers for 2003 GMC Sierra 1500
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![81923 - 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/eeb4d155702da0ab85011b22834cd3a9.webp "81923 - 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
81923
Designed, tested and validated for assured compliance to meet CARB standards, Walker® CalCat® Universal Catalytic Converters are...
Positions: Left, Right
Fits Your Vehicle
![81723 - 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/26fb1f2de73c33afeafb2513ae0e3821.webp "81723 - 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
81723
Designed, tested and validated for assured compliance to meet CARB standards, Walker® CalCat® Universal Catalytic Converters are...
Positions: Left, Right
$969.46
Fits Your Vehicle
![81713 - 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/cdf84efcc86597978b59890436e28666.webp "81713 - 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
81713
Designed, tested and validated for assured compliance to meet CARB standards, Walker® CalCat® Universal Catalytic Converters are...
Positions: Left, Right
$776.18
Fits Your Vehicle
![83508 - 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/52d473df04ba2ab5825b413f58ae14f8.webp "83508 - 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
83508
Designed, tested and validated for assured compliance to meet CARB standards, Walker® CalCat® Universal Catalytic Converters are...
Positions: Left, Right
$350.83
Fits Your Vehicle
![18138 - : SoundFX Universal Universal Exhaust Muffler 2.75" Inlet (ID) 2.75" Outlet (OD) for Walker Exhaust Image](http://cdn-product-images.revolutionparts.io/assets/705b19476c7befcb777ab086f2c94d83.webp "18138 - : SoundFX Universal Universal Exhaust Muffler 2.75" Inlet (ID) 2.75" Outlet (OD) for Walker Exhaust")
SoundFX Universal Universal Exhaust Muffler 2.75" Inlet (ID) 2.75" Outlet (OD)
Walker Exhaust
18138
Featuring 100% aluminized steel for longer service life compared to low-carbon steel, Walker SoundFX® universal mufflers deliver quality...
$47.26
Fits Most Vehicles
![93253 - Exhaust: Ultra EPA Universal Catalytic Converter 2.5" Inlet (ID) 2.5" Outlet (ID) for Walker Exhaust Image](http://cdn-product-images.revolutionparts.io/assets/a20f8817f79ee6f17c746723ac66548b.webp "93253 - Exhaust: Ultra EPA Universal Catalytic Converter 2.5" Inlet (ID) 2.5" Outlet (ID) for Walker Exhaust")
Ultra EPA Universal Catalytic Converter 2.5" Inlet (ID) 2.5" Outlet (ID)
Walker Exhaust
93253
Designed to comply with EPA emissions requirements while delivering premium performance and durability with assured compliance, Walker®...
Positions: Left, Right
$111.50
Fits Your Vehicle
![83403 - 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/61e634a0605be214c630f6769f298ef3.webp "83403 - 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
83403
Designed, tested and validated for assured compliance to meet CARB standards, Walker® CalCat® Universal Catalytic Converters are...
Positions: Left, Right
$293.87
Fits Your Vehicle
Prebent Exhaust Pipe
AP Exhaust
38728
AP Exhaust/Tail Pipes
Positions: Center
$31.85
Fits Your Vehicle
![56020 - : Exhaust Pipe 2.75" Outlet (OD) for Walker Exhaust Image](http://cdn-product-images.revolutionparts.io/assets/d403757f0e7b0cac834b1bc0fcb5ef9a.webp "56020 - : Exhaust Pipe 2.75" Outlet (OD) for Walker Exhaust")
Exhaust Pipe 2.75" Outlet (OD)
Walker Exhaust
56020
Made from aluminized steel for durability, Walker® premium pipe is manufactured with precision benders and fixture checked to ensure a...
$68.65
Direct Fit Muffler - MSL Maximum
AP Exhaust
700303
AP MSL Mximum Muffler A muffler designed for the Professional installer; Constructed from 100% Aluminized Steel; Engineered to perform...
$42.47
Fits Your Vehicle
![52216 - : Exhaust Pipe 2.75" Outlet (OD) for Walker Exhaust Image](http://cdn-product-images.revolutionparts.io/assets/63982b79d1162edeb7961f97aa1be4ee.webp "52216 - : Exhaust Pipe 2.75" Outlet (OD) for Walker Exhaust")
Exhaust Pipe 2.75" Outlet (OD)
Walker Exhaust
52216
Made from aluminized steel for durability, Walker® premium pipe is manufactured with precision benders and fixture checked to ensure a...
$37.46
![18823 - : SoundFX Direct Fit Exhaust Muffler 2.75" Inlet (ID) 2.75" Outlet (OD) for Walker Exhaust Image](http://cdn-product-images.revolutionparts.io/assets/7b981b9865e09382c84fafe048c87619.webp "18823 - : SoundFX Direct Fit Exhaust Muffler 2.75" Inlet (ID) 2.75" Outlet (OD) for Walker Exhaust")
SoundFX Direct Fit Exhaust Muffler 2.75" Inlet (ID) 2.75" Outlet (OD)
Walker Exhaust
18823
Featuring 100% aluminized steel for longer service life compared to low-carbon steel, Walker SoundFX® direct-fit mufflers deliver quality...
$46.10
Federal / EPA Catalytic Converter - Universal OBDII
AP Exhaust
608216
ARISTO's proprietary substrate chemistry yields highly efficient loadings for lower cost and better converter efficiency while our latest...
$106.81
Fits Your Vehicle
![55187 - : Exhaust Tail Pipe 2.75" Inlet (ID) 2.75" Outlet (OD) for Walker Exhaust Image](http://cdn-product-images.revolutionparts.io/assets/7f3261490a18f20cfd335fdc34d8c8b6.webp "55187 - : Exhaust Tail Pipe 2.75" Inlet (ID) 2.75" Outlet (OD) for Walker Exhaust")
Exhaust Tail Pipe 2.75" Inlet (ID) 2.75" Outlet (OD)
Walker Exhaust
55187
Made from aluminized steel for durability, Walker® premium pipe is manufactured with precision benders and fixture checked to ensure a...
$39.62
Prebent Exhaust Pipe
AP Exhaust
48501
AP Exhaust/Tail Pipes
Positions: Center
$40.24
Fits Your Vehicle
![21356 - : Quiet-Flow SS Direct Fit Exhaust Muffler 2.75" Inlet (ID) 2.75" Outlet (OD) for Walker Exhaust Image](http://cdn-product-images.revolutionparts.io/assets/1030c741575a98ab09dc7db7b25db6ea.webp "21356 - : Quiet-Flow SS Direct Fit Exhaust Muffler 2.75" Inlet (ID) 2.75" Outlet (OD) for Walker Exhaust")
Quiet-Flow SS Direct Fit Exhaust Muffler 2.75" Inlet (ID) 2.75" Outlet (OD)
Walker Exhaust
21356
The only broad-market muffler with 100% stainless-steel construction, Walker® Quiet-Flow® SS mufflers feature precision fit, superior...
$95.44
![50511 - Exhaust: Ultra EPA Direct Fit Catalytic Converter 3.625" Inlet (ID) for Walker Exhaust Image](http://cdn-product-images.revolutionparts.io/assets/59952f39212b2b259c754835da849e92.webp "50511 - Exhaust: Ultra EPA Direct Fit Catalytic Converter 3.625" Inlet (ID) for Walker Exhaust")
Ultra EPA Direct Fit Catalytic Converter 3.625" Inlet (ID)
Walker Exhaust
50511
Designed to comply with EPA standards while delivering premium performance with assured compliance, Walker® Ultra® Direct-Fit Catalytic...
$488.87
Fits Your Vehicle
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