MagnaFlow Universal Muffler 13266 - 4x9x18in Oval Straight-Through - 2.5in/2.5in - Chevy/GMC C/K 1988-1993

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.

Specifications

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