GMC Envoy Headers and Exhaust Parts

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GMC Envoy

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-34%

MagnaFlow |

#37612244

MagnaFlow 12244 5x8 Inch Oval Center/Center Stainless Muffler

Muffler Type:

Straight-Through

Inlet Diameter:

Outlet Diameter:

$139.00

/each

$210.85

-34%

MagnaFlow |

#37612245

MagnaFlow 12245 5x8 Inch Oval Center/Center Stainless Muffler

Muffler Type:

Straight-Through

Inlet Diameter:

2.25"

Outlet Diameter:

2.25"

$139.00

/each

$210.85

-34%

MagnaFlow |

#37612246

MagnaFlow 12246 5x8 Inch Oval Center/Center Stainless Muffler

Muffler Type:

Straight-Through

Inlet Diameter:

2.5"

Outlet Diameter:

2.5"

$146.00

/each

$221.39

-34%

MagnaFlow |

#37612256

MagnaFlow 12256 5x8 Inch Oval Center/Offset Stainless Muffler

Muffler Type:

Straight-Through

Inlet Diameter:

2.5"

Outlet Diameter:

2.5"

$146.00

/each

$221.39

$120 Off

MagnaFlow |

#37614834

MagnaFlow 14834 5x8 Inch Oval Center/Center Stainless Muffler

Muffler Type:

Straight-Through

Inlet Diameter:

Outlet Diameter:

$229.00

/each

$348.60

Exhaust Manifolds VS Headers | How Much HP Do Headers Add

Headers and manifolds differ in design and function. Long tube headers, shorty headers, and exhaust manifolds each have their pros and cons regarding performance and application.

Choosing the Right Headers

Which size of headers should I use? Short or long tube headers? Etc. Learn how to answer these exhaust questions and choose the right header with our expert guide.

Exhaust System Header Wrapping

Whether you’re looking for performance improvements or heat reduction, if you decide to wrap your headers, we'll show you the benefits and possible precautions to take before you wrap your exhaust.

Ceramic Coated Headers

Watch our video on the ceramic coating process for Armor Hot Coating. Headers coated with Armor Hot Coating protect your car without sacrificing looks.

Wrapping Exhaust Manifolds to Reduce Under Hood Temps

Learn how to wrap exhaust headers to help keep under hood temperatures down. This articles shows how cast iron exhaust manifolds are wrapped in 1-inch black header wrap with stainless steel exhaust wrap ties.

Exhaust Repair

Some basic info on the various exhaust options carried by Speedway Motors.

How to Install an Electric Motor Kit for Exhaust Cutouts

A guide on removing and installing a new electric motor kit for exhaust cutouts.

Replacing GM Rear End Spherical Bushings

In this budget build, a GM rear end is upgraded in order to hold 400+ HP. See how spherical bushings are replaced in a used 8.5” GM 10 bolt rear end.

Replacing Fuel Sending Unit

Learn how to replace a fuel sending unit. Our fuel gauge sending unit guide and installation video covers all you need to match your fuel sender and gauge.

GM Body Styles

Need a little help Identifying GM Body Styles 1964-1972? Click Here!

$140 Off

MagnaFlow |

#37614851

MagnaFlow 14851 5x8 Inch Oval Center/Center Stainless Muffler

Muffler Type:

Straight-Through

Inlet Diameter:

2.25"

Outlet Diameter:

$269.00

/each

$409.05

$118 Off

MagnaFlow |

#37614857

MagnaFlow 14857 5x5 Inch Round Center/Center Stainless Muffler

Muffler Type:

Straight-Through

Inlet Diameter:

2.25"

Outlet Diameter:

$227.00

/each

$344.85

$213 Off

MagnaFlow |

#37614868

MagnaFlow 14868 5x8 Inch Oval Black Stainless Muffler With Tip

Muffler Type:

Straight-Through

Inlet Diameter:

2.25"

Outlet Diameter:

$408.00

/each

$620.71

-33%

MagnaFlow |

#37635113

MagnaFlow 35113 Stainless 3.5 Inch Round Polished Exhaust Tip

Exhaust Tubing Diameter:

3 Inch

Finish:

Polished

$62.00

/each

$93.01

-33%

MagnaFlow |

#37635116

MagnaFlow 35116 Stainless 4 Inch Round Polished Exhaust Tip

Exhaust Tubing Diameter:

3 Inch

Finish:

Polished

$70.00

/each

$105.61

-34%

MagnaFlow |

#37635120

MagnaFlow 35120 Stainless 5 Inch Round Polished Exhaust Tip

Exhaust Tubing Diameter:

4 Inch

Finish:

Polished

$166.00

/each

$251.77

-33%

MagnaFlow |

#37635125

MagnaFlow 35125 Stainless 3.5 Inch Round Polished Exhaust Tip

Exhaust Tubing Diameter:

2-1/4 Inch

Finish:

Polished

$81.00

/each

$122.64

-33%

MagnaFlow |

#37635131

MagnaFlow 35131 Stainless 3 Inch Round Polished Exhaust Tip

Exhaust Tubing Diameter:

2-1/4 Inch

Finish:

Polished

$71.00

/each

$107.54

$110 Off

MagnaFlow |

#37635149

MagnaFlow 35149 Stainless 5 Inch Round Polished Exhaust Tip

Exhaust Tubing Diameter:

4 Inch

Finish:

Polished

$211.00

/each

$321.13

$135 Off

MagnaFlow |

#37635150

MagnaFlow 35150 Stainless 2x8 Inch Rectangle Polished Exhaust Tip

Exhaust Tubing Diameter:

2-1/4 Inch

Finish:

Polished

$259.00

/each

$394.03

-34%

MagnaFlow |

#37635168

MagnaFlow 35168 Stainless 3 Inch Round Polished Exhaust Tip

Exhaust Tubing Diameter:

2-1/4 Inch

Finish:

Polished

$128.00

/each

$194.83

$118 Off

MagnaFlow |

#37635174

MagnaFlow 35174 Stainless 3.5x4.25 Inch Oval Polished Exhaust Tip

Exhaust Tubing Diameter:

2-1/4 Inch

Finish:

Polished

$227.00

/each

$344.88

-34%

MagnaFlow |

#37635178

MagnaFlow 35178 Stainless 3.5 Inch Turndown Polished Exhaust Tip

Exhaust Tubing Diameter:

3-1/2 Inch

Finish:

Polished

$100.00

/each

$151.78

-33%

MagnaFlow |

#37635180

MagnaFlow 35180 Stainless 3 Inch Turndown Polished Exhaust Tip

Exhaust Tubing Diameter:

3 Inch

Finish:

Polished

$88.00

/each

$132.87

-33%

MagnaFlow |

#37635205

MagnaFlow 35205 Stainless 3.5 Inch Round Polished Exhaust Tip

Exhaust Tubing Diameter:

2-1/2 Inch

Finish:

Polished

$54.00

/each

$81.71

-34%

MagnaFlow |

#37635213

MagnaFlow 35213 Stainless 5 Inch Round Polished Exhaust Tip

Exhaust Tubing Diameter:

3-1/2 Inch

Finish:

Polished

$177.00

/each

$269.30

-33%

MagnaFlow |

#37635216

MagnaFlow 35216 Stainless 3.5 Inch Round Polished Exhaust Tip

Exhaust Tubing Diameter:

2-1/4 Inch

Finish:

Polished

$73.00

/each

$109.88

-33%

MagnaFlow |

#37635217

MagnaFlow 35217 Stainless 3.5 Inch Round Polished Exhaust Tip

Exhaust Tubing Diameter:

2-1/4 Inch

Finish:

Polished

$71.00

/each

$106.91

-34%

MagnaFlow |

#37635225

MagnaFlow 35225 Stainless 3.5 Inch Round Polished Exhaust Tip

Exhaust Tubing Diameter:

2-1/2 Inch

Finish:

Polished

$82.00

/each

$124.87

-34%

MagnaFlow |

#37635226

MagnaFlow 35226 Stainless 3 Inch Round Polished Exhaust Tip

Exhaust Tubing Diameter:

2-1/4 Inch

Finish:

Polished

$166.00

/each

$252.27

-34%

MagnaFlow |

#37635227

MagnaFlow 35227 Stainless 3 Inch Round Polished Exhaust Tip

Exhaust Tubing Diameter:

2-1/4 Inch

Finish:

Polished

$166.00

/each

$252.27

Precision Turbo |

#38643047

Precision Turbo PTP074-3047 GT42/GT45 Turbine Discharge Flange

Material Type:

Stainless Steel

Sold in Quantity:

Each

$53.05

/each

$114 Off

MagnaFlow |

#37614260

MagnaFlow 14260 5x8 Inch Oval Offset/Offset Stainless Muffler

Muffler Type:

Straight-Through

Inlet Diameter:

2.5"

Outlet Diameter:

2.5"

$220.00

/each

$333.96

$116 Off

MagnaFlow |

#37614264

MagnaFlow 14264 5x8 Inch Oval Offset/Offset Stainless Muffler

Muffler Type:

Straight-Through

Inlet Diameter:

Outlet Diameter:

$225.00

/each

$341.42

-34%

MagnaFlow |

#37614326

MagnaFlow 14326 4x9 Inch Oval Center/Offset Stainless Muffler

Muffler Type:

Straight-Through

Inlet Diameter:

2.5"

Outlet Diameter:

2.5"

$164.00

/each

$249.63

-34%

MagnaFlow |

#37614329

MagnaFlow 14329 4x9 Inch Oval Center/Offset Stainless Muffler

Muffler Type:

Straight-Through

Inlet Diameter:

Outlet Diameter:

$180.00

/each

$272.88

-34%

MagnaFlow |

#37614336

MagnaFlow 14336 4x9 Inch Oval Offset/Offset Stainless Muffler

Muffler Type:

Straight-Through

Inlet Diameter:

2.5"

Outlet Diameter:

2.5"

$164.00

/each

$249.63

-34%

MagnaFlow |

#37614415

MagnaFlow 14415 4x4 Inch Round Center/Center Stainless Muffler

Muffler Type:

Straight-Through

Inlet Diameter:

2.25"

Outlet Diameter:

2.25"

$120.00

/each

$182.42

-34%

MagnaFlow |

#37614616

MagnaFlow 14616 6x6 Inch Round Center/Center Stainless Muffler

Muffler Type:

Straight-Through

Inlet Diameter:

2.5"

Outlet Diameter:

2.5"

$158.00

/each

$239.70

-34%

MagnaFlow |

#37614619

MagnaFlow 14619 6x6 Inch Round Center/Center Stainless Muffler

Muffler Type:

Straight-Through

Inlet Diameter:

Outlet Diameter:

$172.00

/each

$260.98

-34%

MagnaFlow |

#37614715

MagnaFlow 14715 7x7 Inch Round Center/Center Stainless Muffler

Muffler Type:

Straight-Through

Inlet Diameter:

2.25"

Outlet Diameter:

2.25"

$156.00

/each

$236.86

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GMC Envoy Headers and Exhaust Parts

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Products

MagnaFlow 12244 5x8 Inch Oval Center/Center Stainless Muffler

MagnaFlow 12245 5x8 Inch Oval Center/Center Stainless Muffler

MagnaFlow 12246 5x8 Inch Oval Center/Center Stainless Muffler

MagnaFlow 12256 5x8 Inch Oval Center/Offset Stainless Muffler

MagnaFlow 14834 5x8 Inch Oval Center/Center Stainless Muffler

Related Articles

MagnaFlow 14851 5x8 Inch Oval Center/Center Stainless Muffler

MagnaFlow 14857 5x5 Inch Round Center/Center Stainless Muffler

MagnaFlow 14868 5x8 Inch Oval Black Stainless Muffler With Tip

MagnaFlow 35113 Stainless 3.5 Inch Round Polished Exhaust Tip

MagnaFlow 35116 Stainless 4 Inch Round Polished Exhaust Tip

MagnaFlow 35120 Stainless 5 Inch Round Polished Exhaust Tip

MagnaFlow 35125 Stainless 3.5 Inch Round Polished Exhaust Tip

MagnaFlow 35131 Stainless 3 Inch Round Polished Exhaust Tip

MagnaFlow 35149 Stainless 5 Inch Round Polished Exhaust Tip

MagnaFlow 35150 Stainless 2x8 Inch Rectangle Polished Exhaust Tip

MagnaFlow 35168 Stainless 3 Inch Round Polished Exhaust Tip

MagnaFlow 35174 Stainless 3.5x4.25 Inch Oval Polished Exhaust Tip

MagnaFlow 35178 Stainless 3.5 Inch Turndown Polished Exhaust Tip

MagnaFlow 35180 Stainless 3 Inch Turndown Polished Exhaust Tip

MagnaFlow 35205 Stainless 3.5 Inch Round Polished Exhaust Tip

MagnaFlow 35213 Stainless 5 Inch Round Polished Exhaust Tip

MagnaFlow 35216 Stainless 3.5 Inch Round Polished Exhaust Tip

MagnaFlow 35217 Stainless 3.5 Inch Round Polished Exhaust Tip

MagnaFlow 35225 Stainless 3.5 Inch Round Polished Exhaust Tip

MagnaFlow 35226 Stainless 3 Inch Round Polished Exhaust Tip

MagnaFlow 35227 Stainless 3 Inch Round Polished Exhaust Tip

Precision Turbo PTP074-3047 GT42/GT45 Turbine Discharge Flange

MagnaFlow 14260 5x8 Inch Oval Offset/Offset Stainless Muffler

MagnaFlow 14264 5x8 Inch Oval Offset/Offset Stainless Muffler

MagnaFlow 14326 4x9 Inch Oval Center/Offset Stainless Muffler

MagnaFlow 14329 4x9 Inch Oval Center/Offset Stainless Muffler

MagnaFlow 14336 4x9 Inch Oval Offset/Offset Stainless Muffler

MagnaFlow 14415 4x4 Inch Round Center/Center Stainless Muffler

MagnaFlow 14616 6x6 Inch Round Center/Center Stainless Muffler

MagnaFlow 14619 6x6 Inch Round Center/Center Stainless Muffler

MagnaFlow 14715 7x7 Inch Round Center/Center Stainless Muffler