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WALKER - Exhaust Muffler - 21528
WALKER - Exhaust Muffler - 21528
WALKER - Exhaust Muffler - 21528
WALKER - Exhaust Muffler - 21528
WALKER - Exhaust Muffler - 21528
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WALKER - Exhaust Muffler - 21528

WALKER
WAL21528
In stock
Muffler
$134.55 $126.99
Product Description The WALKER 21528 Quiet-Flow® SS Exhaust Muffler is a premium, direct-fit stainless-steel replacement designed...
$126.99
WALKER - Exhaust Muffler - 21485
WALKER - Exhaust Muffler - 21485
$214.99 $206.99
WALKER - Exhaust Muffler - 18451
WALKER - Exhaust Muffler - 18451
$119.99
WALKER - Exhaust Muffler - 21528
Description

Product Description

The WALKER 21528 Quiet-Flow® SS Exhaust Muffler is a premium, direct-fit stainless-steel replacement designed to restore OE-style performance, sound, and exhaust flow on select Chevrolet and Pontiac compact vehicles. As the only broad-market muffler made with 100% stainless-steel construction, it provides exceptional corrosion resistance and longevity compared to traditional aluminized-steel mufflers.

Engineered with OE-style louvered tubes, domed heads, and internal partitions, this muffler delivers precise acoustic control for a smooth, factory-correct exhaust tone. Mechanically joined tubes and spun-locked heads allow thermal expansion without distortion, ensuring long service life. With OE-style hangers, brackets, and pipe routing, installation is quick and requires no welding or fabrication.

Key Features

  • 100% Stainless-Steel Construction for maximum corrosion resistance and long life

  • Direct-Fit, Bolt-On Replacement using OE-style hangers and brackets

  • OE-Style Acoustic Tuning with louvered tubes and domed heads for premium sound quality

  • Mechanically Joined Internal Tubes minimize distortion during temperature changes

  • Internal Drainage System reduces moisture accumulation for extended durability

  • Acoustic & Flow Tested to ensure reliable OE-style performance

  • Backed by Walker’s Limited Lifetime Warranty and 90-Day Safe & Sound® Guarantee

Technical Specifications

Specification Detail
Shape Oval
Finish Aluminized
Body Material Stainless Steel
Inlet Type Pipe Connection
Outlet Type Pipe Connection
Inlet Inside Diameter 1.750 in
Outlet Outside Diameter 2.000 in
Inlet Location Offset
Outlet Location Offset
Inlet Quantity 1
Outlet Quantity 1
Body Height 7.000 in
Body Length 18.000 in
Body Width 9.000 in
Overall Length 28.875 in
Inlet Offset 1.750 in
Reversible No
Tunable No
Universal or Specific Fit Specific
Grade Type Premium

Vehicle Compatibility

(One muffler required per vehicle unless otherwise noted.)

Chevrolet

Cobalt

  • 2.2L L4 (2198cc / 134 cid) → 2005–2010

Pontiac

G5

  • 2.2L L4 (2198cc / 134 cid) → 2007–2010

Pursuit

  • 2.2L L4 (2198cc / 134 cid) → 2006

Installation & Warranty Notes

  • Direct-fit design uses factory-style hangers and pipe routing

  • No welding required—bolt-on installation

  • Inspect clamps, gaskets, and rubber isolators during installation

  • Designed to restore OE backpressure and exhaust tone

  • Includes Walker’s limited lifetime warranty and 90-Day Safe & Sound® Guarantee

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Shipping

Order Processing
All orders are processed and shipped within 24 hours of purchase (excluding weekends and holidays).
Orders placed after 3:00 PM EST may ship the following business day.

Shipping Methods
Customers select their preferred shipping method and speed at checkout.
Shipping times are determined by the carrier and cannot be guaranteed by us.
Tracking information will be provided once your order has shipped.

Shipping Coverage
If your package arrives damaged, please notify the delivery driver immediately and contact the shipping carrier to file a claim.
You must report any missing or damaged items within 14 days of delivery.
After this time, we cannot be held responsible for lost or damaged items.

Returns

Return Window
You have 30 days from the date of delivery to request a return.
After 30 days, we are unable to accept returns, exchanges, or refund requests.

Eligibility
Items must be returned in their original condition—unused, unwashed, and with all tags and packaging intact.
Certain products may not be eligible for return (e.g., special-order items, customized products, or perishable goods).
Items that have been altered, installed, or modified cannot be returned.

Return Process
Contact our Customer Support team to request a Return Authorization (RMA) before sending items back.
Once your return is approved, you’ll receive instructions on where to send the product.
Customers are responsible for return shipping costs unless the item was defective or incorrect.

Refunds
Refunds are issued to the original payment method once the returned item has been received and inspected.
Please allow 5–10 business days for the refund to appear on your account.
In some cases, a restocking fee may apply (if applicable, this will be disclosed during your return authorization).

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