# MagnaFlow Muffler Mag SS 18X6X6 3/3 C/C

The MagnaFlow 6in. Round Straight-Through Performance Exhaust Muffler 12649 brings our world-famous exhaust sound and dyno-proven performance to your ride in a weight-optimized 6x6x18in. package with a premium satin finish. The straight-through free-flowing design of this round-bodied muffler's reversible, universal 3/3in. diameter inlet/outlet layout enables versatile installation options to match the spacing requirements of your vehicle. Due to the cutting and welding involved, professional installation is highly recommended. Internally, 12649 utilizes a perforated stainless steel core wrapped in stainless steel mesh and acoustic fiber fill to achieve a powerful, resonant tone. This muffler is made of durable, corrosion resistant stainless steel and produced using cutting-edge CNC precision robotic manufacturing techniques, all backed by MagnaFlow's limited lifetime construction warranty.

-   Delivers a Smooth, Deep Tone
-   Delivers A Smooth-Deep Tone
-   Mufflers Are Bi-Directional
-   100 Percent Stainless Steel
-   100% Stainless Steel

This Part Fits:

Year

Make

Model

Submodel

2002-2005

Chevrolet

Silverado 1500

Base

2004-2006

Chevrolet

Silverado 1500

Hybrid

2002-2006

Chevrolet

Silverado 1500

LS

2002-2006

Chevrolet

Silverado 1500

LT

2002-2006

Chevrolet

Silverado 1500

WT

2004-2005

Chevrolet

Silverado 1500

Z71 Off-Road

2007

Chevrolet

Silverado 1500 Classic

Hybrid

2007

Chevrolet

Silverado 1500 Classic

LS

2007

Chevrolet

Silverado 1500 Classic

LT

2007

Chevrolet

Silverado 1500 Classic

WT

1999-2000

Chevrolet

Silverado 2500

Base

1999-2000

Chevrolet

Silverado 2500

LS

1999-2000

Chevrolet

Silverado 2500

LT

1998-2001

Dodge

Ram 2500

Base

1998-2001

Dodge

Ram 3500

Base

1997-2001

Ford

Expedition

Eddie Bauer

1997-2001

Ford

Expedition

XLT

1998-2000

Ford

F-150

Base

2000-2003

Ford

F-150

Harley-Davidson Edition

2001-2003

Ford

F-150

King Ranch

1998-2003

Ford

F-150

Lariat

1999-2003

Ford

F-150

Lightning

1998-2003

Ford

F-150

XL

1998-2003

Ford

F-150

XLT

2004

Ford

F-150 Heritage

SVT Lightning

2004

Ford

F-150 Heritage

XL

2004

Ford

F-150 Heritage

XLT

1998-1999

Ford

F-250

Base

1998-1999

Ford

F-250

Lariat

1998-1999

Ford

F-250

XL

1998-1999

Ford

F-250

XLT

2002-2005

GMC

Sierra 1500

Base

2002

GMC

Sierra 1500

HT

2005-2006

GMC

Sierra 1500

Hybrid

1999-2003,2006

GMC

Sierra 1500

SL

1999-2006

GMC

Sierra 1500

SLE

1999-2006

GMC

Sierra 1500

SLT

2002-2006

GMC

Sierra 1500

WT

2007

GMC

Sierra 1500 Classic

Hybrid

2007

GMC

Sierra 1500 Classic

SL

2007

GMC

Sierra 1500 Classic

SLE

2007

GMC

Sierra 1500 Classic

SLT

2007

GMC

Sierra 1500 Classic

WT

1999-2000

GMC

Sierra 2500

SL

1999-2000

GMC

Sierra 2500

SLE

1999-2000

GMC

Sierra 2500

SLT

1998-2001

Lincoln

Navigator

Base

## Details

- **Price:** 245.55 CAD
- **Vendor:** Magnaflow
- **Type:** Muffler

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 245.55 CAD | In stock |

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/magnaflow-muffler-mag-ss-18x6x6-3-3-c-c)
> Updated: 2026-06-29