24/7 Customer service
USD
To make aftermarket auto parts an afterthought.
Add your vehicle
Address
Login
Cart
Item
$0.00
Add your vehicle to ensure fitment/Choose a yearRequired Fields
Select a different vehicle
Make/Model
VIN
Save

GMC Exhaust Muffler Assembly

268 items

exhaust-muffler-assembly

  • All filters
  • Sort By
  • Year
  • Model
  • Price
  • Placement on Vehicle
  • Brand
  • Material
  • Color
  • Warranty
Exhaust Muffler - Walker 21481Exhaust Muffler - Walker 21481
WalkerPart # 21481
Exhaust Muffler - Walker 21481
43 Reviews
$124.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2009-2012 Chevrolet Colorado, 2009-2012 Chevrolet Colorado, 2009-2012 GMC Canyon, 2009-2012 GMC Canyon, 2004-2008 Chevrolet Colorado, 2004-2008 GMC Canyon
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: GMC
Item LocatedUnited States
Quantity1
Part interchange
21481, 25878014, 25878015
item #1001A910
Show less
Exhaust Muffler - Walker 21169
WalkerPart # 21169
Exhaust Muffler - Walker 21169
43 Reviews
$125.99
Low stock: Only 4 left
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 1994-1995 Toyota 4Runner, 1994-1994 Toyota T100, 1993-1995 Toyota Pickup, 1993-1993 Toyota T100, 1992-1993 Toyota 4Runner, 1991-1992 Toyota Pickup, 1989-1990 Toyota Pickup, 1988-1991 Toyota 4Runner, 1986-1997 Ford Aerostar, 1978-1978 Ford F-100, 1978-1978 Ford F-250, 1976-1978 Ford F-150, 1975-1978 Ford F-150, 1974-1974 Chevrolet G30 Van, 1974-1974 Dodge D100 Pickup, 1974-1974 Dodge D200 Pickup, 1974-1974 Dodge D300 Pickup, 1974-1974 Dodge W100 Pickup, 1974-1974 Dodge W200 Pickup, 1974-1974 Dodge W300 Pickup
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: GMC
Item LocatedUnited States
Quantity1
Part interchange
21169, 43317, 3901, M060232, 288-023, 2021, 44065
item #1001A9XS
Show less
Exhaust Muffler - Walker 22915
WalkerPart # 22915
Exhaust Muffler - Walker 22915
43 Reviews
$367.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits All Year All Make All Model
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: GMC
Item LocatedUnited States
Quantity1
Part interchange
22915, M100213, 3702, M-526
item #1001A8Z5
Show less
Exhaust Muffler - Walker 21759
WalkerPart # 21759
Exhaust Muffler - Walker 21759
43 Reviews
$182.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2013-2016 Chevrolet Express 4500, 2013-2016 GMC Savana 4500, 2011-2017 Chevrolet Express 3500, 2011-2017 GMC Savana 3500, 2010-2020 Chevrolet Express 3500, 2010-2020 GMC Savana 3500, 2010-2017 Chevrolet Express 2500, 2010-2017 Chevrolet Express 2500, 2010-2017 GMC Savana 2500, 2010-2017 GMC Savana 2500, 2009-2014 Chevrolet Express 1500, 2009-2014 GMC Savana 1500
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: GMC
Item LocatedUnited States
Quantity1
Part interchange
21759, 15942552
item #1001A6VW
Show less
Exhaust Muffler - Walker 22958
WalkerPart # 22958
Exhaust Muffler - Walker 22958
43 Reviews
$241.99
Low stock: Only 2 left
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits All Year All Make All Model
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: GMC
Item LocatedUnited States
Quantity1
Part interchange
22958, M-724, 3927, M110479
item #1001A686
Show less
Exhaust Muffler - Front Side - Walker 21421
WalkerPart # 21421
Exhaust Muffler - Front Side - Walker 21421
43 Reviews
$180.99
Low stock: Only 1 left
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2005-2005 GMC Envoy XL, 2004-2005 GMC Envoy XUV, 2004-2005 GMC Envoy XUV, 2003-2005 Chevrolet Trailblazer EXT, 2003-2005 Chevrolet Trailblazer EXT, 2003-2005 GMC Envoy XL, 2003-2005 GMC Envoy XL, 2003-2005 Isuzu Ascender, 2002-2005 Chevrolet Trailblazer EXT, 2002-2002 GMC Envoy XL
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: GMC
Item LocatedUnited States
Quantity1
Installation PositionFront
Part interchange
21421, 15175774, 8158475770
item #1001A9Q5
Show less
Exhaust Muffler - Front Side - Walker 18898
WalkerPart # 18898
Exhaust Muffler - Front Side - Walker 18898
43 Reviews
$123.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2005-2005 GMC Envoy XL, 2004-2005 GMC Envoy XUV, 2004-2005 GMC Envoy XUV, 2003-2005 Chevrolet Trailblazer EXT, 2003-2005 Chevrolet Trailblazer EXT, 2003-2005 GMC Envoy XL, 2003-2005 GMC Envoy XL, 2003-2005 Isuzu Ascender, 2002-2005 Chevrolet Trailblazer EXT, 2002-2002 GMC Envoy XL
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: GMC
Item LocatedUnited States
Quantity1
Installation PositionFront
Part interchange
18898, 700429
item #1001A5E8
Show less
Exhaust Muffler - Walker 17749
WalkerPart # 17749
Exhaust Muffler - Walker 17749
43 Reviews
$91.99
Low stock: Only 1 left
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 1988-1993 Chevrolet C1500, 1988-1993 Chevrolet C1500, 1988-1993 Chevrolet C2500, 1988-1993 Chevrolet C2500, 1988-1993 Chevrolet K1500, 1988-1993 Chevrolet K1500, 1988-1993 Chevrolet K2500, 1988-1993 Chevrolet K2500, 1988-1993 GMC C1500, 1988-1993 GMC C1500, 1988-1993 GMC C2500, 1988-1993 GMC C2500, 1988-1993 GMC K1500, 1988-1993 GMC K1500, 1988-1993 GMC K2500, 1988-1993 GMC K2500
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: GMC
Item LocatedUnited States
Quantity1
Part interchange
17749
item #1001AES7
Show less
Exhaust Muffler Assembly - Rear Side - Walker 50072
WalkerPart # 50072
Exhaust Muffler Assembly - Rear Side - Walker 50072
43 Reviews
$188.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2017-2017 Chevrolet Equinox, 2015-2017 GMC Terrain, 2014-2017 Chevrolet Equinox, 2014-2017 Chevrolet Equinox, 2013-2017 GMC Terrain, 2013-2017 GMC Terrain, 2010-2013 Chevrolet Equinox, 2010-2012 GMC Terrain
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: GMC
Item LocatedUnited States
Quantity1
Installation PositionRear
Part interchange
50072, 20923156, 23442413, 20960980
item #1001A78Q
Show less
Exhaust Muffler - Walker 21283
WalkerPart # 21283
Exhaust Muffler - Walker 21283
43 Reviews
$120.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 1997-1997 Isuzu Hombre, 1996-1997 Chevrolet S10, 1996-1997 GMC Sonoma, 1996-1996 Isuzu Hombre
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: GMC
Item LocatedUnited States
Quantity1
Part interchange
21283, 2184, 54918, 45453
item #1001A651
Show less
Exhaust Muffler - Walker 18824
WalkerPart # 18824
Exhaust Muffler - Walker 18824
43 Reviews
$79.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 1996-1999 Chevrolet C1500, 1996-1999 Chevrolet K1500, 1996-1999 GMC C1500, 1996-1999 GMC K1500, 1996-1998 Chevrolet C2500, 1996-1998 GMC C2500
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: GMC
Item LocatedUnited States
Quantity1
Part interchange
18824, 700258
item #1001A68Z
Show less
Exhaust Muffler - Walker 18345
WalkerPart # 18345
Exhaust Muffler - Walker 18345
43 Reviews
$80.99
Low stock: Only 2 left
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 1987-1987 Oldsmobile Cutlass, 1986-1988 Chevrolet Monte Carlo, 1986-1987 Pontiac Grand Prix, 1985-1988 Chevrolet Monte Carlo, 1985-1987 Chevrolet El Camino, 1985-1987 GMC Caballero, 1985-1987 Oldsmobile Cutlass Salon, 1985-1986 Oldsmobile Cutlass, 1985-1986 Pontiac Bonneville, 1984-1988 Chevrolet Monte Carlo, 1984-1984 Pontiac Bonneville, 1983-1987 Pontiac Grand Prix, 1983-1984 Chevrolet El Camino, 1983-1984 Chevrolet Monte Carlo, 1983-1984 GMC Caballero, 1983-1984 Pontiac Bonneville, 1983-1983 Chevrolet Malibu, 1982-1988 Oldsmobile Cutlass Supreme, 1982-1987 Buick Regal, 1982-1984 Chevrolet El Camino
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: GMC
Item LocatedUnited States
Quantity1
Part interchange
18345, 700057
item #1001A8YQ
Show less
Exhaust Muffler - Walker 21165
WalkerPart # 21165
Exhaust Muffler - Walker 21165
43 Reviews
$389.99
Low stock: Only 1 left
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits All Year All Make All Model
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: GMC
Item LocatedUnited States
Quantity1
Part interchange
21165, 1909858, D8HZ5230AL, M120748, 86672M, M110014, M-672, E3HZ5230D, 
...View more
item #1001A883
Show less
Exhaust Muffler - Walker 18989
WalkerPart # 18989
Exhaust Muffler - Walker 18989
43 Reviews
$125.99
Low stock: Only 1 left
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 1998-2002 Chevrolet Express 3500, 1998-2002 GMC Savana 3500, 1996-1999 Chevrolet Express 1500, 1996-1999 Chevrolet Express 1500, 1996-1999 Chevrolet Express 2500, 1996-1999 Chevrolet Express 2500, 1996-1999 GMC Savana 1500, 1996-1999 GMC Savana 1500, 1996-1999 GMC Savana 2500, 1996-1999 GMC Savana 2500
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: GMC
Item LocatedUnited States
Quantity1
Part interchange
18989, 700441
item #1001A7H5
Show less
Exhaust Muffler - Walker 21146
WalkerPart # 21146
Exhaust Muffler - Walker 21146
43 Reviews
$124.99
Low stock: Only 3 left
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits All Year All Make All Model
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: GMC
Item LocatedUnited States
Quantity1
Part interchange
21146, 3683, M080018, 3875, M80300
item #1001AA4V
Show less
Exhaust Muffler - Walker 21424
WalkerPart # 21424
Exhaust Muffler - Walker 21424
43 Reviews
$107.99
Low stock: Only 1 left
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2001-2003 Chevrolet S10, 2001-2003 GMC Sonoma
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: GMC
Item LocatedUnited States
Quantity1
Part interchange
21424, 2184, 200-0020
item #1001A63K
Show less
Exhaust Muffler - Front Side - Walker 21690
WalkerPart # 21690
Exhaust Muffler - Front Side - Walker 21690
43 Reviews
$88.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2018-2020 Chevrolet Equinox, 2015-2017 GMC Terrain, 2013-2017 GMC Terrain, 2013-2017 GMC Terrain, 2010-2017 Chevrolet Equinox, 2010-2012 GMC Terrain
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: GMC
Item LocatedUnited States
Quantity1
Installation PositionFront
Part interchange
21690, 20923156, 23442413, 20960980
item #1001A8LU
Show less
Exhaust Muffler - Walker 22604
WalkerPart # 22604
Exhaust Muffler - Walker 22604
43 Reviews
$320.99
Low stock: Only 1 left
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits All Year All Make All Model
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: GMC
Item LocatedUnited States
Quantity1
Part interchange
22604, M090547, M-537
item #1001A9NQ
Show less
Exhaust Muffler - Front Side - Walker 17165
WalkerPart # 17165
Exhaust Muffler - Front Side - Walker 17165
43 Reviews
$85.99
Low stock: Only 1 left
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2007-2009 Chevrolet Trailblazer, 2006-2009 GMC Envoy, 2006-2007 Buick Rainier, 2006-2006 Chevrolet Trailblazer, 2006-2006 Chevrolet Trailblazer, 2005-2005 GMC Envoy, 2004-2005 Buick Rainier, 2004-2005 Isuzu Ascender, 2003-2005 Chevrolet Trailblazer, 2003-2005 Chevrolet Trailblazer, 2003-2004 Chevrolet Trailblazer, 2003-2003 Chevrolet Trailblazer, 2002-2007 Buick Rendezvous, 2002-2004 GMC Envoy, 2002-2004 Oldsmobile Bravada, 2002-2002 Chevrolet Trailblazer, 2001-2005 Pontiac Aztek
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: GMC
Item LocatedUnited States
Quantity1
Installation PositionFront
Part interchange
17165
item #1001A0YQ
Show less
Exhaust Muffler - Walker 18124
WalkerPart # 18124
Exhaust Muffler - Walker 18124
43 Reviews
$69.99
Low stock: Only 2 left
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 1992-1994 Chevrolet G30, 1992-1994 GMC G3500, 1991-1994 Chevrolet G10, 1991-1994 Chevrolet G20, 1991-1994 GMC G1500, 1991-1994 GMC G2500, 1991-1991 Chevrolet G30, 1991-1991 Chevrolet R2500 Suburban, 1991-1991 Chevrolet V3500, 1991-1991 GMC G3500, 1991-1991 GMC R1500 Suburban, 1991-1991 GMC R2500 Suburban, 1990-1991 Chevrolet K3500, 1990-1991 Chevrolet R1500 Suburban, 1990-1991 GMC K3500, 1990-1990 GMC G3500, 1990-1990 GMC P3500, 1990-1990 GMC R1500 Suburban, 1990-1990 GMC R2500 Suburban, 1989-1991 Chevrolet R3500
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: GMC
Item LocatedUnited States
Quantity1
Part interchange
18124
item #1001A3YK
Show less
1...45678...14
Page 6 of 14

Related Categories

Catalytic Converter
Catalytic Converter
Exhaust Pipe Assembly
Exhaust Pipe Assembly
Tie Rod End
Tie Rod End
Oxygen Sensor
Oxygen Sensor
Exhaust Resonator and Pipe Assembly
Exhaust Resonator and Pipe Assembly
Engine Air Filter
Engine Air Filter

Related Blogs

How Rusty Is Too Rusty for a Muffler?

Surface rust doesn't always mean replacement. Learn to distinguish cosmetic oxidation from structural failure, identify safety risks like leaks or loose mounts, and decide when to repair or replace your muffler.

Sep 11, 2026

How to Find an Exhaust Leak and Fix It Safely

Identify exhaust leaks by symptoms like ticking, hissing, or soot. Learn safe inspection methods, understand Check Engine Light codes, and apply correct fixes—replacing gaskets or parts rather than relying on temporary tapes.

Aug 27, 2026

Muffler Guide: Function, Failure Signs and Replacement Guide

Mufflers are more than just noise reducers; they enhance your car's efficiency. Discover how they work, learn the key indicators for replacement, and navigate the costs involved in keeping your vehicle running smoothly.

Jul 28, 2026

How much does it cost to replace a muffler?

Learn how much muffler replacement costs, what parts and labor include, and when a patch or weld may be enough. Compare repair options, evaluate shop quotes, and find practical ways to save without risking poor fitment or repeat repairs.

Jul 28, 2026