HomeExhaust > MufflersWalker 21387 Exhaust Muffler
Part #: 21387

Walker 21387 Exhaust Muffler

Quiet-Flow SS
22 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
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OE Direct Replacement — Bolt-on fit, no modifications needed
Quiet-Flow SS
Fitment: Ford and Mercury, Sable and Taurus
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Walker Quiet-Flow SS Exhaust Muffler 21387

The Walker Quiet-Flow SS Exhaust Muffler 21387 is designed specifically for Ford Taurus and Mercury Sable models. Engineered with durable stainless steel and an aluminized finish, this muffler offers reliable performance and corrosion resistance tailored to your vehicle's exhaust system.

  • Specific fit for Ford Taurus and Mercury Sable
  • Oval-shaped muffler body with 9.75-inch width and 4.25-inch height
  • Stainless steel construction with aluminized finish for durability
  • Inlet inside diameter of 2.25 inches and outlet outside diameter of 2.5 inches
  • Offset inlet and outlet pipe connections for precise fitment
  • Combination muffler type with a single inlet and outlet
  • Overall length of 27.87 inches and body length of 19 inches

Detailed Product Features and Specifications

The Walker Quiet-Flow SS 21387 muffler features a robust stainless steel body that resists rust and extends service life. Its aluminized finish further protects against corrosion from road elements. The muffler’s oval shape and specific dimensions—9.75 inches wide, 4.25 inches high, and 19 inches in body length—ensure a proper fit within the exhaust system of compatible vehicles. The inlet and outlet pipe connections are offset, with the inlet offset measuring 2.875 inches, facilitating installation in the exhaust layout of Ford Taurus and Mercury Sable models. The inlet inside diameter is 2.25 inches, while the outlet outside diameter is 2.5 inches, matching factory exhaust pipe sizes for a secure connection. This combination muffler type includes one inlet and one outlet, designed for specific fitment rather than universal application.

About the Walker Quiet-Flow SS Product Line

The Quiet-Flow SS line by Walker focuses on providing exhaust mufflers constructed from stainless steel to enhance durability and corrosion resistance. This product line is engineered to deliver consistent exhaust flow and noise reduction tailored to specific vehicle applications. The 21387 muffler exemplifies the Quiet-Flow SS commitment to quality materials and precise fitment for Ford and Mercury vehicles.

Common Applications and Problem Solving

  • Replacement for worn or damaged mufflers on Ford Taurus and Mercury Sable
  • Restores proper exhaust flow and reduces excessive noise
  • Prevents exhaust leaks caused by rust or corrosion
  • Maintains factory exhaust system performance and emissions compliance
  • Addresses fitment issues with offset inlet and outlet pipe connections

Installation Notes and Tips

Ensure compatibility by verifying the muffler’s specific fitment for Ford Taurus and Mercury Sable models. The offset inlet and outlet pipe connections require alignment with the vehicle’s exhaust pipes, so careful measurement is recommended before installation. The 2.25-inch inlet and 2.5-inch outlet diameters should match the existing exhaust piping for a secure fit. Professional installation is advised to maintain exhaust system integrity and performance.

Quality Assurance and Warranty

Walker manufactures the Quiet-Flow SS 21387 muffler with stainless steel materials and an aluminized finish to provide long-lasting durability. While specific warranty details are not provided here, Walker products typically meet industry standards for quality and reliability. Consult Walker’s official documentation or authorized dealers for warranty information related to this part number.

BrandWalker
Part Number21387
PositionQuiet-Flow SS
Outlet Outside Diameter2.5
Universal Or Specific FitSpecific
ShapeOval
Grade TypeRegular
Inlet Inside Diameter2.25
Body Width9.75
Inlet Quantity1
Outlet Quantity1
ReversibleNo
TunableNo
Overall Length27.87
Body Height4.25
Body Length19
Body MaterialStainless steel
FinishAluminized
Inlet 1 Inside Diameter2.25
Inlet 1 TypePipe connection
Inlet ConfigurationOffset
Inlet Offset2.875
Inlet TypePipe connection
Muffler TypeCombination
Outlet 1 Outside Diameter2.5
Outlet 1 TypePipe connection
Outlet ConfigurationOffset
Outlet TypePipe connection

This part fits 22 vehicles. Search below:

YearMakeModelBody TypeLitersCylindersFuel TypePositionNotes
2004FordTaurusWagon3.0LV6N/APremium; To 04/26/2004; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2004FordTaurusWagon3.0LV6FLEXN/APremium; To 04/26/2004; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2004MercurySableWagon3.0LV6N/APremium; To 04/26/2004; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2004MercurySable3.0LV6N/APremium; To 04/26/2004; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2003FordTaurusWagon3.0LV6N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2003FordTaurusWagon3.0LV6FLEXN/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2003MercurySableWagon3.0LV6N/APremium; To 04/26/2004; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2003MercurySableWagon3.0LV6N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2003MercurySable3.0LV6N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2002FordTaurusWagon3.0LV6N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2002FordTaurusWagon3.0LV6FLEXN/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2002MercurySableWagon3.0LV6N/APremium; To 04/26/2004; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2002MercurySable3.0LV6N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2001FordTaurusWagon3.0LV6N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2001FordTaurusWagon3.0LV6FLEXN/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2001MercurySableWagon3.0LV6N/APremium; To 04/26/2004; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2001MercurySableWagon3.0LV6N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2001MercurySable3.0LV6N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2000FordTaurusWagon3.0LV6N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2000FordTaurusWagon3.0LV6FLEXN/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2000MercurySableWagon3.0LV6N/APremium; To 04/26/2004; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS
2000MercurySable3.0LV6N/APremium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

147112377

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.