The MagnaFlow 13266 is an XL oval straight-through performance muffler with a 4x9x18in body and a reversible 2.5in/2.5in inlet/outlet layout. Its perforated stainless steel core with baffles and tuning gates delivers MagnaFlow's signature sound and dyno-proven performance. The universal design offers flexible placement within your exhaust system; professional installation is recommended. CNC precision robotic manufactured with durable corrosion-resistant stainless steel, backed by MagnaFlow's limited lifetime warranty.
| Type | Straight-through performance muffler |
| Body | Oval - 4x9x18in |
| Inlet/Outlet | 2.5in / 2.5in |
| Material | Stainless steel |
| Part Number | 13266 |
| Warranty | Limited lifetime |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1988-1993 | Chevrolet | C1500 | Cheyenne |
| 1988-1992 | Chevrolet | C1500 | Scottsdale |
| 1988-1993 | Chevrolet | C1500 | Silverado |
| 1990-1993 | Chevrolet | C1500 | WT |
| 1988-1993 | Chevrolet | C2500 | Cheyenne |
| 1988-1992 | Chevrolet | C2500 | Scottsdale |
| 1988-1993 | Chevrolet | C2500 | Silverado |
| 1988-1993 | Chevrolet | K1500 | Cheyenne |
| 1988-1992 | Chevrolet | K1500 | Scottsdale |
| 1988-1993 | Chevrolet | K1500 | Silverado |
| 1991 | Chevrolet | K1500 | Sport |
| 1990-1993 | Chevrolet | K1500 | WT |
| 1988-1993 | Chevrolet | K2500 | Cheyenne |
| 1988-1992 | Chevrolet | K2500 | Scottsdale |
| 1988-1993 | Chevrolet | K2500 | Silverado |
| 1988-1993 | GMC | C1500 | Sierra |
| 1988-1993 | GMC | C1500 | Sierra SLE |
| 1988-1993 | GMC | C1500 | Sierra SLX |
| 1988-1993 | GMC | C2500 | Sierra |
| 1988-1993 | GMC | C2500 | Sierra SLE |
| 1988-1993 | GMC | C2500 | Sierra SLX |
| 1988-1993 | GMC | K1500 | Sierra |
| 1988-1993 | GMC | K1500 | Sierra SLE |
| 1988-1993 | GMC | K1500 | Sierra SLX |
| 1993 | GMC | K1500 | Sierra Sport |
| 1988-1993 | GMC | K2500 | Sierra |
| 1988-1993 | GMC | K2500 | Sierra SLE |
| 1988-1993 | GMC | K2500 | Sierra SLX |
Shipping: In-stock orders placed before 3 PM EST ship the same day, and everything else ships within 24 hours. Standard, expedited, and overnight options are available at checkout. Backordered items ship as soon as we get them back in stock. Contact us for lead times. See the full Shipping Policy.
Returns: 30-day returns on new, unused items in original packaging. See the full Refund Policy.
