Walker 21377 Exhaust Muffler
OE Quality 60-Day Returns
Walker
 Quiet-Flow SS

Walker 21377 Exhaust Muffler

Brand Walker 21377
Universal Or Specific Fit Specific
Shape Round
Grade Type Regular
Inlet Inside Diameter 2.5
Body Width 7
Inlet Quantity 1
Outlet Inside Diameter 2.5
Outlet Quantity 1
Reversible No
Tunable No
Overall Length 31
Body Height 7
Body Length 26
Body Material Stainless steel
Finish Aluminized
Inlet 1 Inside Diameter 2.5
Inlet 1 Type Pipe connection
Inlet Configuration Offset
Inlet Offset 1.75
Inlet Type Pipe connection
Muffler Type Combination
Outlet 1 Inside Diameter 2.5
Outlet 1 Type Pipe connection
Outlet Configuration Offset
Outlet Type Pipe connection
Product line Quiet-Flow SS
Fits Ford · 47 vehicles

100% stainless steel. Corrosion-resistant construction for long service life.

Precision fit. OE-style replacement with superior flow.

OE-style sound. Delivers a refined exhaust note.

Cross-references Anchor 2231 for the same application. See all 1.

$121.31Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.
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Step 2 — Quantity
Order total $121.31
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
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Walker Quiet-Flow SS Muffler for Ford E-Series

Walker Quiet-Flow SS Muffler Part Number 21377 is a specific-fit exhaust muffler built for select Ford E-150 and Ford E-250 applications. It uses 100% stainless-steel construction for the body and is shaped for OE-style sound, precise fitment, and steady exhaust flow.

Key Features

  • Specific-fit exhaust muffler for select Ford E-150 and Ford E-250 models
  • Round muffler body with 2.5-inch inlet and 2.5-inch outlet
  • Offset inlet and offset outlet pipe connection layout
  • Stainless-steel body construction with aluminized finish
  • Combination muffler type for balanced flow and sound control
  • Overall length: 31 inches; body length: 26 inches; body width and height: 7 inches
  • Walker Quiet-Flow SS line focuses on OE-style sound and fit

Product Details

The Walker Quiet-Flow SS line is built for drivers who want a direct replacement muffler with stainless-steel construction and application-specific dimensions. Part Number 21377 is engineered for select Ford E-Series vans, including Ford E-150 and Ford E-250 models, with fitment spanning 1997 through 2014 in the listed applications. This muffler uses a 2.5-inch inlet and outlet, an offset configuration, and a round body to match the exhaust routing used on the covered vehicles. This part cross-references Anchor 2231 for the same application.

Common Exhaust Issues It Can Address

  • Exhaust noise from a worn or rusted muffler
  • Reduced exhaust flow caused by internal deterioration
  • Fitment problems from an incorrect replacement muffler
  • Corrosion-related failure in the original exhaust assembly
  • Loss of OE-style exhaust tone on Ford E-150 and Ford E-250 vans

Installation Notes and Tips

Verify the vehicle’s year, model, and exhaust configuration before ordering. This muffler uses pipe-connection inlet and outlet ends with offset positioning, so the existing exhaust routing should be matched carefully during replacement. For welded assemblies, replace all required parts in the system as noted in the fitment data. Fits 2009-2014 Ford E-150, N/A; Fits 2009-2014 Ford E-250, N/A; Fits 2005-2007 Ford E-150, N/A; Fits 2007 Ford E-250, N/A; Fits 2005-2006 Ford E-250, N/A; Fits 2003 Ford E-250, N/A; Fits 2005 Ford E-150 Club Wagon, N/A; Fits 2003 Ford E-150, N/A; Fits 2003 Ford E-150 Club Wagon, N/A; Fits 1997-2002 Ford E-150 Econoline, N/A; Fits 1997-2002 Ford E-150 Econoline Club Wagon, N/A; Fits 1997-2002 Ford E-250 Econoline, N/A.

Quality Assurance

Walker Quiet-Flow SS mufflers are positioned as stainless-steel replacement exhaust components with precision fit and OE-style sound characteristics for domestic and import vehicle applications. Part Number 21377 is part of the Quiet-Flow SS product line for direct-fit exhaust service on select Ford E-Series vehicles.

Related reading

This part fits 47 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersWheel BasePositionNotes
2014FordE-1504.6LV8—N/AQuiet-Flow SS
2014FordE-2504.6LV8—N/AQuiet-Flow SS
2013FordE-1504.6LV8—N/AQuiet-Flow SS
2013FordE-2504.6LV8—N/AQuiet-Flow SS
2012FordE-1504.6LV8—N/AQuiet-Flow SS
2012FordE-2504.6LV8—N/AQuiet-Flow SS
2011FordE-1504.6LV8—N/AQuiet-Flow SS
2011FordE-2504.6LV8—N/AQuiet-Flow SS
2010FordE-1504.6LV8—N/AQuiet-Flow SS
2010FordE-2504.6LV8—N/AQuiet-Flow SS
2009FordE-1504.6LV8—N/AQuiet-Flow SS
2009FordE-2504.6LV8—N/AQuiet-Flow SS
2007FordE-1504.6LV8138.0"N/ABefore 10/16/2006; Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2007FordE-2504.6LV8138.0"N/ABefore 10/16/2006; Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2006FordE-1504.6LV8138.0"N/ABefore 10/16/2006; Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2006FordE-2504.6LV8138.0"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2005FordE-1504.6LV8138.0"N/ABefore 10/16/2006; Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2005FordE-150 Club Wagon4.6LV8138.0"N/ABefore 10/16/2006; Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2005FordE-2504.6LV8138.0"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2003FordE-1504.6LV8138.0"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2003FordE-150 Club Wagon4.6LV8138.0"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2003FordE-2504.2LV6138.0"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2003FordE-2504.6LV8138.0"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2002FordE-150 Econoline4.6LV8138.0"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2002FordE-150 Econoline4.2LV6138.0"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2002FordE-150 Econoline Club Wagon4.2LV6138.0"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2002FordE-150 Econoline Club Wagon4.6LV8138.0"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2002FordE-250 Econoline4.2LV6138.0"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2001FordE-150 Econoline4.6LV8138.0"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2001FordE-150 Econoline4.2LV6138.0"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2001FordE-150 Econoline Club Wagon4.2LV6138.0"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2001FordE-150 Econoline Club Wagon4.6LV8138.0"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2001FordE-250 Econoline4.2LV6138.0"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2000FordE-150 Econoline4.6LV8138.0"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2000FordE-150 Econoline4.2LV6138.0"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2000FordE-150 Econoline Club Wagon4.2LV6138.0"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2000FordE-150 Econoline Club Wagon4.6LV8138.0"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2000FordE-250 Econoline4.2LV6138.0"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
1999FordE-150 Econoline4.2LV6138.0"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
1999FordE-150 Econoline Club Wagon4.2LV6138.0"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
1999FordE-250 Econoline4.2LV6138.0"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
1998FordE-150 Econoline4.2LV6138.0"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
1998FordE-150 Econoline Club Wagon4.2LV6138.0"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
1998FordE-250 Econoline4.2LV6138.0"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
1997FordE-150 Econoline4.2LV6138.0"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
1997FordE-150 Econoline Club Wagon4.2LV6138.0"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
1997FordE-250 Econoline4.2LV6138.0"N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
Directly replaces or cross-references 1 part number
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Anchor — 2231