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  6. Walker 21423

Walker 21423 Exhaust Muffler

Walker 21423 Exhaust Muffler
Walker 21423 Exhaust Muffler Image 1
Walker 21423 Exhaust Muffler

Walker
Brand:Walker
Part Number: 21423
UPC: 086387214230
Weight: 16.5 lbs
Condition:New



On Sale:

$120.57

Availability:
18 in Stock
Warehouse: US-7
Quantity:

Product Information

Description:

QUIET-FLOW3 MUFFLER

The only broad-market muffler with 100% stainless-steel construction, Walker Quiet-Flow SS mufflers feature precision fit, superior flow and OE-style sound. Quiet-Flow SS mufflers are available for most domestic and import vehicles.

Features and Benefits:

  • BUILT TO LAST -- Internal partitions and mechanically joined tubes allow expansion and contraction during temperature changes to minimize distortion while spun-locked heads and OE-style spot welds provide stability and longer service life
  • BUY WITH CONFIDENCE -- Comes with Walker's limited lifetime warranty and exclusive 90-Day Safe and Sound Guarantee. Visit Walkerexhaust.com for details.
  • CORROSION RESISTANT STAINLESS STEEL -- The only broad-market muffler with 100% stainless-steel construction that delivers longer life versus aluminized mufflers while an internal drainage system reduces moisture collection
  • DESIGN VALIDATED -- Acoustic and flow tested for quality OE-style sound you can count on
  • EASY TO INSTALL -- Direct-fit bolt-on replacement solution with OE-style hangers, brackets and pipe routings for easy installation and doesn't require specialized fabrication and/or welding
  • PREMIUM ACOUSTIC CONTROL -- OE-style louvered tubes lower noise levels while OE-style domed heads help reduce radiated noise for premium factory-style sound quality compared to straight perforated tubes

Specifications:

Body Height:
7 in.
Body Length:
24 in.
Body Material:
Stainless Steel
Body Width:
9 in.
Finish:
Aluminized
Grade Type:
Regular
Inlet 1 Inside Diameter:
2.625 in.
Inlet 1 Type:
Pipe Connection
Inlet Configuration:
Center
Inlet Inside Diameter:
2.625 in.
Inlet Quantity:
1
Inlet Type:
Pipe Connection
Muffler Type:
Combination
Outlet 1 Inside Diameter:
2.625 in.
Outlet 1 Type:
Pipe Connection
Outlet Configuration:
Offset
Outlet Inside Diameter:
2.625 in.
Outlet Quantity:
1
Outlet Type:
Pipe Connection
Overall Length:
28 in.
Reversible:
No
Shape:
Oval
Tunable:
No
Universal Or Specific Fit:
Specific
Country of Origin:
US

Select a vehicle to narrow Walker 21423 Exhaust Muffler fitment info!

Last Updated: 12/24/2023

Years Vehicle Per Vehicle Fit NotesFitment Notes

2005

 

2004

 

2003

 

2002

 

2005

 

2004

 

2003

 

2002

 
Cadillac Escalade

5.3L V8 Gas OHV
1
 
Quiet-Flow SS
Except Luxury Package
Premium
Limited Lifetime Warranty
If welded assembly, replace all required parts
 

Cadillac Escalade



5.3L V8 Gas OHV Quiet-Flow SS
Except Luxury Package
Premium
Limited Lifetime Warranty
If welded assembly, replace all required parts

1 Per Vehicle

2006

 

2005

 

2006

 

2005

 
Chevrolet Avalanche 1500

5.3L V8 Flex OHV
1
 
Quiet-Flow SS
Premium
Single Outlet Muffler Replaces Dual Outlet
Limited Lifetime Warranty
If welded assembly, replace all required parts
 

Chevrolet Avalanche 1500



5.3L V8 Flex OHV Quiet-Flow SS
Premium
Single Outlet Muffler Replaces Dual Outlet
Limited Lifetime Warranty
If welded assembly, replace all required parts

1 Per Vehicle

2006

 

2005

 

2004

 

2003

 

2002

 

2006

 

2005

 

2004

 

2003

 

2002

 
Chevrolet Avalanche 1500

5.3L V8 Gas OHV
1
 
Quiet-Flow SS
Premium
Single Outlet Muffler Replaces Dual Outlet
Limited Lifetime Warranty
If welded assembly, replace all required parts
 

Chevrolet Avalanche 1500



5.3L V8 Gas OHV Quiet-Flow SS
Premium
Single Outlet Muffler Replaces Dual Outlet
Limited Lifetime Warranty
If welded assembly, replace all required parts

1 Per Vehicle

2006

 

2005

 

2004

 

2003

 

2002

 

2006

 

2005

 

2004

 

2003

 

2002

 
Chevrolet Suburban 1500

5.3L V8 Flex OHV
1
 
Quiet-Flow SS
Premium
Single Outlet Muffler Replaces Dual Outlet
Limited Lifetime Warranty
If welded assembly, replace all required parts
 

Chevrolet Suburban 1500



5.3L V8 Flex OHV Quiet-Flow SS
Premium
Single Outlet Muffler Replaces Dual Outlet
Limited Lifetime Warranty
If welded assembly, replace all required parts

1 Per Vehicle

2006

 

2005

 

2004

 

2003

 

2002

 

2001

 

2000

 

2006

 

2005

 

2004

 

2003

 

2002

 

2001

 

2000

 
Chevrolet Suburban 1500

5.3L V8 Gas OHV
1
 
Quiet-Flow SS
Premium
Single Outlet Muffler Replaces Dual Outlet
Limited Lifetime Warranty
If welded assembly, replace all required parts
 

Chevrolet Suburban 1500



5.3L V8 Gas OHV Quiet-Flow SS
Premium
Single Outlet Muffler Replaces Dual Outlet
Limited Lifetime Warranty
If welded assembly, replace all required parts

1 Per Vehicle

2006

 

2005

 

2004

 

2003

 

2002

 

2006

 

2005

 

2004

 

2003

 

2002

 
Chevrolet Tahoe

5.3L V8 Flex OHV
1
 
Quiet-Flow SS
Premium
Single Outlet Muffler Replaces Dual Outlet
Limited Lifetime Warranty
If welded assembly, replace all required parts
 

Chevrolet Tahoe



5.3L V8 Flex OHV Quiet-Flow SS
Premium
Single Outlet Muffler Replaces Dual Outlet
Limited Lifetime Warranty
If welded assembly, replace all required parts

1 Per Vehicle

2006

 

2005

 

2004

 

2003

 

2002

 

2001

 

2006

 

2005

 

2004

 

2003

 

2002

 

2001

 
Chevrolet Tahoe

4.8L V8 Gas OHV,
5.3L V8 Gas OHV
1
 
Quiet-Flow SS
Premium
Single Outlet Muffler Replaces Dual Outlet
Limited Lifetime Warranty
If welded assembly, replace all required parts
 

Chevrolet Tahoe



4.8L V8 Gas OHV,
5.3L V8 Gas OHV Quiet-Flow SS
Premium
Single Outlet Muffler Replaces Dual Outlet
Limited Lifetime Warranty
If welded assembly, replace all required parts

1 Per Vehicle

2000

 

2000

 
Chevrolet Tahoe

4.8L V8 Gas OHV,
5.3L V8 Gas OHV
1
 
Quiet-Flow SS
Except Luxury Package
Premium
Single Outlet Muffler Replaces Dual Outlet
Limited Lifetime Warranty
If welded assembly, modifications and/or additional parts may be required.
 

Chevrolet Tahoe



4.8L V8 Gas OHV,
5.3L V8 Gas OHV Quiet-Flow SS
Except Luxury Package
Premium
Single Outlet Muffler Replaces Dual Outlet
Limited Lifetime Warranty
If welded assembly, modifications and/or additional parts may be required.

1 Per Vehicle

2006

 

2005

 

2004

 

2003

 

2002

 

2006

 

2005

 

2004

 

2003

 

2002

 
GMC Yukon

5.3L V8 Flex OHV
1
 
Quiet-Flow SS
Premium
Single Outlet Muffler Replaces Dual Outlet
Limited Lifetime Warranty
If welded assembly, replace all required parts
 

GMC Yukon



5.3L V8 Flex OHV Quiet-Flow SS
Premium
Single Outlet Muffler Replaces Dual Outlet
Limited Lifetime Warranty
If welded assembly, replace all required parts

1 Per Vehicle

2006

 

2005

 

2004

 

2003

 

2002

 

2001

 

2006

 

2005

 

2004

 

2003

 

2002

 

2001

 
GMC Yukon

4.8L V8 Gas OHV,
5.3L V8 Gas OHV
1
 
Quiet-Flow SS
Premium
Single Outlet Muffler Replaces Dual Outlet
Limited Lifetime Warranty
If welded assembly, replace all required parts
 

GMC Yukon



4.8L V8 Gas OHV,
5.3L V8 Gas OHV Quiet-Flow SS
Premium
Single Outlet Muffler Replaces Dual Outlet
Limited Lifetime Warranty
If welded assembly, replace all required parts

1 Per Vehicle

2000

 

2000

 
GMC Yukon

4.8L V8 Gas OHV,
5.3L V8 Gas OHV
1
 
Quiet-Flow SS
Premium
Single Outlet Muffler Replaces Dual Outlet
Limited Lifetime Warranty
If welded assembly, modifications and/or additional parts may be required.
 

GMC Yukon



4.8L V8 Gas OHV,
5.3L V8 Gas OHV Quiet-Flow SS
Premium
Single Outlet Muffler Replaces Dual Outlet
Limited Lifetime Warranty
If welded assembly, modifications and/or additional parts may be required.

1 Per Vehicle

2006

 

2005

 

2004

 

2003

 

2002

 

2006

 

2005

 

2004

 

2003

 

2002

 
GMC Yukon XL 1500

5.3L V8 Flex OHV
1
 
Quiet-Flow SS
Premium
Single Outlet Muffler Replaces Dual Outlet
Limited Lifetime Warranty
If welded assembly, replace all required parts
 

GMC Yukon XL 1500



5.3L V8 Flex OHV Quiet-Flow SS
Premium
Single Outlet Muffler Replaces Dual Outlet
Limited Lifetime Warranty
If welded assembly, replace all required parts

1 Per Vehicle

2006

 

2005

 

2004

 

2003

 

2002

 

2001

 

2000

 

2006

 

2005

 

2004

 

2003

 

2002

 

2001

 

2000

 
GMC Yukon XL 1500

5.3L V8 Gas OHV
1
 
Quiet-Flow SS
Premium
Single Outlet Muffler Replaces Dual Outlet
Limited Lifetime Warranty
If welded assembly, replace all required parts
 

GMC Yukon XL 1500



5.3L V8 Gas OHV Quiet-Flow SS
Premium
Single Outlet Muffler Replaces Dual Outlet
Limited Lifetime Warranty
If welded assembly, replace all required parts

1 Per Vehicle