# MagnaFlow Muffler Mag SS 22X5X11 2.5 D/3 C

The MagnaFlow 5 X 11in. Oval Straight-Through Performance Exhaust Muffler 12588 is engineered to enhance your ride with a healthy helping of our signature exhaust sound and dyno-proven performance thanks to its free-flowing straight-through perforated stainless steel core wrapped in stainless steel mesh and acoustic fiber fill. The reversible, universal 3/2.5in. diameter inlet/outlet Straight-Through layout allows you to install it in whatever orientation and configuration you see fit. However, professional installation is highly recommended. Muffler 12588s weight-optimized 5x11x22in. oval-shaped body features a satin finish that elevates the overall aesthetics of your current exhaust setup. 12588 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

2003-2006

Cadillac

Escalade

Base

2003-2006

Cadillac

Escalade ESV

Base

2003-2006

Cadillac

Escalade EXT

Base

2007-2008

Chevrolet

Suburban 2500

LS

2007-2008

Chevrolet

Suburban 2500

LT

2007

Chevrolet

Suburban 2500

LTZ

1996-1999

Chevrolet

Tahoe

Base

1996-1999

Chevrolet

Tahoe

LS

1996-1999

Chevrolet

Tahoe

LT

2008

Chevrolet

Trailblazer

Base

2002-2007

Chevrolet

Trailblazer

LS

2002-2009

Chevrolet

Trailblazer

LT

2002-2003

Chevrolet

Trailblazer

LTZ

2002-2004

Chevrolet

Trailblazer

North Face

2003-2006

Chevrolet

Trailblazer EXT

LS

2002-2006

Chevrolet

Trailblazer EXT

LT

2002-2004

Chevrolet

Trailblazer EXT

North Face

2009-2010

Dodge

Ram 1500

Laramie

2009-2010

Dodge

Ram 1500

SLT

2009-2010

Dodge

Ram 1500

Sport

2009-2010

Dodge

Ram 1500

ST

2009-2010

Dodge

Ram 1500

TRX

2009-2010

Dodge

Ram 1500

TRX4

2004-2009

GMC

Envoy

SLE

2004-2009

GMC

Envoy

SLT

1999

GMC

Yukon

Denali

1996-1997

GMC

Yukon

SL

1996-1999

GMC

Yukon

SLE

1996-1999

GMC

Yukon

SLT

2003-2006

GMC

Yukon XL 1500

Denali

2007-2008

GMC

Yukon XL 2500

SLE

2007-2008

GMC

Yukon XL 2500

SLT

2006

Isuzu

Ascender

Base

2004-2006

Isuzu

Ascender

LS

2004-2005,2007-2008

Isuzu

Ascender

S

2013-2016

Nissan

Frontier

Desert Runner

2010

Nissan

Frontier

LE

2010-2016

Nissan

Frontier

PRO-4X

2011-2016

Nissan

Frontier

S

2010

Nissan

Frontier

SE

2011-2016

Nissan

Frontier

SL

2011-2016

Nissan

Frontier

SV

2011-2014

Ram

1500

Big Horn

2012-2014

Ram

1500

Express

2013-2014

Ram

1500

HFE

2012-2014

Ram

1500

Laramie

2014

Ram

1500

Laramie Limited

2012-2014

Ram

1500

Laramie Longhorn

2014

Ram

1500

Lone Star

2011-2014

Ram

1500

Outdoorsman

2013

Ram

1500

R/T

2011-2014

Ram

1500

SLT

2014

Ram

1500

Special Service

2012-2014

Ram

1500

Sport

2011-2012

Ram

1500

ST

2012-2014

Ram

1500

Tradesman

2012

Ram

1500

Tradesman HD

2011

Ram

2500

Laramie

2011

Ram

2500

Laramie Longhorn

2011

Ram

2500

Power Wagon

2011

Ram

2500

SLT

2011

Ram

2500

ST

2001-2006

Toyota

Sequoia

Limited

2001-2006

Toyota

Sequoia

SR5

2007-2013

Toyota

Tundra

Base

2001-2002,2007-2013

Toyota

Tundra

Limited

2013

Toyota

Tundra

Platinum

2014-2015

Toyota

Tundra

SR

2001-2002,2007-2011,2014-2015

Toyota

Tundra

SR5

## Details

- **Price:** 310.41 CAD
- **Vendor:** Magnaflow
- **Type:** Muffler

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 310.41 CAD | In stock |

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/magnaflow-muffler-mag-ss-22x5x11-2-5-d-3-c)
> Updated: 2026-06-29