Walker
Quiet-Flow SS

Walker 50487 Exhaust Muffler Assembly

Brand Walker 50487
Finish Natural
Body Diameter 11
Inlet Type 2 bolt welded flange
Outlet Type Tip
Body Height 5.5
Body Length 25
Muffler Material Stainless steel
Muffler Shape Oval
Overall Length 43.5
Body Material Stainless steel
Body Width 11
Grade Type Regular
Inlet 1 Type 2 bolt welded flange
Inlet Configuration Offset
Inlet Quantity 1
Muffler Type Reflection
Outlet 1 Outside Diameter 3
Outlet 1 Type Tip
Outlet 2 Outside Diameter 2
Outlet Configuration Offset
Outlet Quantity 2
Shape Oval
Product line Quiet-Flow SS
Fits Nissan · 12 vehicles

Stainless steel construction. Helps resist corrosion better than typical aluminized mufflers.

OE-style direct fit. Built for a factory-style exhaust replacement with application-specific dimensions.

Quiet-Flow SS line. Walker’s stainless muffler series for durable exhaust service.

Cross-references DA41457 for the same application. See all 1.

$296.74Free 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.
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Order total $296.74
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.

Walker Quiet-Flow SS Muffler Assembly

The Walker Quiet-Flow SS muffler assembly is a direct-fit OE-style replacement built with stainless steel construction for longer service life than typical aluminized mufflers. Part number 50487 is made for drivers who want a precise exhaust replacement with a factory-style fit and finish.

  • Stainless steel body and muffler construction for improved corrosion resistance.
  • Direct-fit OE-style design for straightforward exhaust replacement.
  • Oval reflection muffler layout for controlled exhaust flow and sound management.
  • Offset inlet and offset outlet configuration for application-specific fitment.
  • Natural finish with welded flange inlet for a secure exhaust connection.

Detailed Product Overview

Walker Quiet-Flow SS is a product line focused on stainless-steel muffler assemblies that match OE-style fitment requirements while offering a more durable material choice. This exhaust muffler assembly uses an oval body, a 2-bolt welded flange inlet, and dual outlet sizing details that support the specified application. For Nissan Altima exhaust repair, part number 50487 provides a direct replacement path without changing the intended exhaust layout.

Common Exhaust Issues It Can Address

  • Rust or corrosion in the muffler body.
  • Exhaust noise caused by a worn internal muffler structure.
  • Fitment problems from a damaged or mismatched replacement muffler.
  • Restricted exhaust flow from a deteriorated assembly.
  • Factory-style exhaust repair needs on a Nissan Altima.

Installation Notes and Tips

Fits 2008-2013 Nissan Altima, N/A. Verify inlet and outlet configuration, overall length, and body dimensions against the existing exhaust before installation. Confirm the welded flange connection and offset layout match the vehicle’s exhaust routing. Part number 50487 should be matched to the listed application only.

Quality Assurance

Walker states that Quiet-Flow SS muffler assemblies use stainless-steel construction and OE-style direct fitment, with longer service life than typical aluminized mufflers. This part cross-references DA41457 for the same application.

This part fits 12 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelBody TypeLitersCylindersNotes
2013NissanAltimaCoupe2.5LL4Premium; Limited Lifetime Warranty; Quiet-Flow SS
2013NissanAltimaCoupe3.5LV6Premium; Limited Lifetime Warranty; Quiet-Flow SS
2012NissanAltimaCoupe2.5LL4Premium; Limited Lifetime Warranty; Quiet-Flow SS
2012NissanAltimaCoupe3.5LV6Premium; Limited Lifetime Warranty; Quiet-Flow SS
2011NissanAltimaCoupe2.5LL4Premium; Limited Lifetime Warranty; Quiet-Flow SS
2011NissanAltimaCoupe3.5LV6Premium; Limited Lifetime Warranty; Quiet-Flow SS
2010NissanAltimaCoupe2.5LL4Premium; Limited Lifetime Warranty; Quiet-Flow SS
2010NissanAltimaCoupe3.5LV6Premium; Limited Lifetime Warranty; Quiet-Flow SS
2009NissanAltimaCoupe2.5LL4Premium; Limited Lifetime Warranty; Quiet-Flow SS
2009NissanAltimaCoupe3.5LV6Premium; Limited Lifetime Warranty; Quiet-Flow SS
2008NissanAltimaCoupe2.5LL4Premium; Limited Lifetime Warranty; Quiet-Flow SS
2008NissanAltimaCoupe3.5LV6Premium; Limited Lifetime Warranty; 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.
DA41457