{
    "lazyNodes": false,
    "abFitnotesFlag": false,
    "abCrawlReviews": false,
    "productOptionsCookie": false,
    "orderDelayFlag": false,
    "skipSessionCookie": false,
    "covidMessage": false,
    "fullTitleCookie": false,
    "nrLoggerCookie": false,
    "checkoutReviewCookie": false,
    "productOptionSeqCookie": false,
    "maintenanceFlag": false,
    "bufferETACookie": false,
    "multiShippingDiscountFlag": false,
    "newFitmentFlag": false,
    "surveyOptInFlag": false,
    "crossSellFlag": false,
    "skuMappingFlag": false,
    "paySplitCookie": false,
    "callDisableFlag": false,
    "zipPaymentFlag": "u",
    "hassleFreeReturn": false,
    "lifetimeReplacement": false,
    "cpn_off": false
}

Retrieve Cart

Track order

File a Return

Need Help? Call Us1-866-529-0412

Auto Body Parts & Mirrors

Headlights & Lighting

Engine & Drivetrain

Brakes, Suspension & Steering

Interior

Exterior

Tools & Garage

Wheels & Tires

Price Match Guarantee

60-Day Returns

Lifetime Replacement

Price Match Guarantee

60-Day Returns

Lifetime Replacement

Select your vehicle

Vehicle Info Required to Guarantee FitAdd Vehicle

Walker®
21539 Quiet-Flow3 Series Muffler

Name: Walker® 21539 Quiet-Flow3 Series Muffler
Brand: Walker
SKU: WK21539
Price: 151.49 USD
Availability: InStock
Rating: 5 (2 reviews)

Tap image and pinch to zoom.

$151.49

$245.70Save: $94.21(38%)

Manufacturer #21539

Vehicle Info Required to Guarantee FitAdd Vehicle

Qty:

Highlights

Part:

Muffler

Brand:

Walker

Series:

Quiet-Flow3 Series

Quantity Sold:

Sold individually

Prop 65 Warning:

WARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Material:

Made of Aluminized Steel

Recommended Use:

OE Replacement

Vehicle Fitment Information

Vehicle Name

Submodel

Engine

Fitment Information

2004-2008 Ford F-150

FX4

8 Cyl 5.4L

145.0 in. Wheelbase, Except Heritage, Except Lightning

2004-2008 Ford F-150

Lariat

8 Cyl 5.4L

144.4 in. Wheelbase, Except Heritage, Except Lightning

2004-2008 Ford F-150

STX

8 Cyl 4.6L

144.4 in. Wheelbase, Except Heritage Models

2004-2008 Ford F-150

8 Cyl 4.6L

144.4 in. Wheelbase, Except Heritage Models

2004-2008 Ford F-150

8 Cyl 5.4L

144.7 in. Wheelbase, Except Heritage, Except Lightning

Page 1 of 4 | Showing 1 - 5 of 18 results

Product Information

WALKER – QUIET-FLOW SS MUFFLERS

Upgrade your exhaust system and tone with the sturdy, enhanced design of Walker’s Quiet-Flow SS mufflers. Established in 1908, Walker is renowned in the automotive aftermarket for manufacturing a full line of exhaust system parts.

Designed with OE-quality louvered tube technology for exhaust tone optimization
Made with sturdy stainless steel for enduring performance
Heads are securely spun-locked to prevent breakage
Strengthened by interior spot welds, partitions and bridge construction
Internal tubes connected to free-floating partition to permit expansion and contraction
Includes CRF (Continuous Roving Fiberglass) for enhancement of sound
Internal drainage system prevents acid build-up at muffler heads and between partitions

Need help?Call our product expert1-866-529-0412

Chat with us

Mondays - Sundays7am - 11pm ET | 4am - 8pm PT

Warranty Policy

Right parts, guaranteed. If you find any defects, let us know within 60 days and we’ll take care of it. Check out our Warranty Policy for more details.

Shipping Policy

We ship fast so you can get on the road that much faster. Check out our Shipping Policy for more details.

Easy Return Policy

We’re only happy if you’re happy. If you’re not entirely satisfied with your order, you may be entitled to a refund. Check out our Return Policy for more details.