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.
| Type | Direct-fit muffler replacement kit (without muffler) |
| Tubing | 4in mandrel-bent |
| Material | 409 stainless steel |
| Retains | OEM piping and tailpipe |
| Warranty | Limited lifetime |
Documents: Installation Instructions (PDF)
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2020-2021,2023 | Chevrolet | Silverado 1500 | Custom Trail Boss |
| 2019-2026 | Chevrolet | Silverado 1500 | High Country |
| 2020-2026 | Chevrolet | Silverado 1500 | LT Trail Boss |
| 2019-2026 | Chevrolet | Silverado 1500 | LTZ |
| 2020-2026 | Chevrolet | Silverado 1500 | RST |
| 2022-2026 | Chevrolet | Silverado 1500 | ZR2 |
| 2022 | Chevrolet | Silverado 1500 LTD | Custom Trail Boss |
| 2022 | Chevrolet | Silverado 1500 LTD | High Country |
| 2022 | Chevrolet | Silverado 1500 LTD | LT Trail Boss |
| 2022 | Chevrolet | Silverado 1500 LTD | LTZ |
| 2022 | Chevrolet | Silverado 1500 LTD | RST |
| 2019-2026 | GMC | Sierra 1500 | AT4 |
| 2022-2026 | GMC | Sierra 1500 | AT4X |
| 2019-2026 | GMC | Sierra 1500 | Denali |
| 2022-2026 | GMC | Sierra 1500 | Denali Ultimate |
| 2019-2026 | GMC | Sierra 1500 | SLT |
| 2022 | GMC | Sierra 1500 Limited | AT4 |
| 2022 | GMC | Sierra 1500 Limited | Denali |
| 2022 | GMC | Sierra 1500 Limited | SLT |
