MagnaFlow D-Fit Muffler Kit 409 SS - GMC Sierra 1500 / Chevrolet Silverado 1500 2019-2026

The MagnaFlow D-Fit Performance Muffler Replacement Kit 19534 replaces the restrictive factory muffler on the 2019-2026 GMC Sierra 1500 and Chevrolet Silverado 1500 with fast-flowing 4in mandrel-bent tubing while retaining the OEM piping and tailpipe. This kit ships without a muffler for a straight-through no-muffler setup and installs as a direct-fit bolt-on. Built from 409 stainless steel and backed by MagnaFlow's limited lifetime warranty.

Specifications

Documents: Installation Instructions (PDF)

This part fits:

Shipping

• In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
• Standard, expedited, and overnight options at checkout.
• Oversized items ship by freight and take longer.
• Backordered items ship as soon as stock lands — contact us for lead times.
• International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.

Returns

• 30-day returns on new, uninstalled items in original packaging with all hardware.
• Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
• Installed or used parts can’t be returned — confirm fitment before you install.
• Special orders and custom items are final sale.
• Email us for return authorization before shipping anything back.

Full details: Shipping Policy · Refund Policy