GMC G25 Headers and Exhaust Parts

Get an exact fit for your

GMC G25

Year

Choose Year

Year

Make

Choose Make

Make

Model

Choose Model

Model

1,852 products

Sort By:

Clear All

Fitment

GMC G25

Products

-9%

Patriot Exhaust |

#447H7261

Patriot Exhaust H7261 3-bolt Collector Flange Kits, 3-1/2 Inch

Material Type:

Steel

Sold in Quantity:

Pair

$43.88

/pair

$48.27

-9%

Patriot Exhaust |

#447H7266

Patriot Exhaust H7266 Collector Flange Kit, 4 Bolt Round, 3-1/2 Inch

Material Type:

Steel

Sold in Quantity:

Pair

$131.76

/pair

$144.94

-9%

Patriot Exhaust |

#447H7267

Patriot Exhaust H7267 Collector Flange Kit, 4 Bolt Round, 4 Inch

Material Type:

Steel

Sold in Quantity:

Pair

$153.70

/pair

$169.07

-9%

Patriot Exhaust |

#447H7268

Patriot Exhaust H7268 Collector Flange kit, 3 Bolt, 3 Inch

Material Type:

Steel

Sold in Quantity:

Pair

$60.39

/pair

$66.43

-9%

Patriot Exhaust |

#447H7435

Patriot Exhaust H7435 Side Exhaust Inlet, 2-2 1/2 Inch

Exhaust Tubing Diameter:

2 Inch

Finish:

Chrome

$82.33

/each

$90.56

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.

Tuning Tips after Header Installation

Making the switch from manifolds to headers is a popular performance upgrade, but it may take more than just bolting on the new part. We provide some tips and things to consider after you bolt on a new set of headers.

Building Custom 241 Red Ram Driveshaft Headers

In this detailed article, Tim will guide you on how to build a custom set of 241 Red Ram Hemi driveshaft headers. From the concept to the materials needed, he'll show you how the mockup and final assembly steps.

Hooker Header Installation Guide

Hooker headers are installed in a 1967 Pontiac Firebird for increased power and a boost in performance. See how to work through fitment of the steering box, clutch Z bar and starter.

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.

Speedway Roadster Headers for a 305 Trike

In this Tech Tip, a customer asked about using a set of Small Block Chevy Sprint Roadster headers for his trike, powered by a stock 305.

Exhaust Repair

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

Speedway Tech Talk - Derby Car Headers

Jeremy explains the different options of headers that Speedway Motors offers for Demolition Derby cars. Watch this video to see a variety of options and the benefits of certain headers.

-9%

Patriot Exhaust |

#447H7980

Patriot Exhaust H7980 Zinc Plated Header Bolts, 10mm x 1.5 x 22mm, 16

Material Type:

Steel

Sold in Quantity:

Set

$13.14

/set

$14.45

-9%

Doug's Headers |

#447CG9006

Doug's Headers CG9006 3 bolt Collector Gaskets, 3 Inch

(1)

Inside Diameter:

Collector Diameter:

3 Inch

Flange Style:

3-Bolt

$15.68

/pair

$17.25

-9%

Patriot Exhaust |

#447H7024

Patriot Exhaust H7024 18 Gauge Exhaust Pipe, 1-3/4 Inch

Exhaust Tubing Diameter:

1-3/4 Inch

Exhaust Pipe Type:

Custom Tubing

Outside Diameter:

1.75"

$32.91

/each

$36.20

-9%

Patriot Exhaust |

#447H7029

Patriot Exhaust H7029 18 Gauge Exhaust Pipe, 1-7/8 Inch

Exhaust Tubing Diameter:

1-7/8 Inch

Exhaust Pipe Type:

Custom Tubing

Outside Diameter:

1.88"

$38.40

/each

$42.24

-9%

Patriot Exhaust |

#447H7032

Patriot Exhaust H7032 J-Bend Exhaust Tubing, 16 gauge, 1-7/8 Inch

Exhaust Tubing Diameter:

1-7/8 Inch

Exhaust Pipe Type:

Custom Tubing

Outside Diameter:

1.88"

$49.37

/each

$54.31

-9%

Patriot Exhaust |

#447H6909

Patriot Exhaust H6909 304 SS Exhaust Pipe J-Bends, 1-3/4 Inch

Exhaust Tubing Diameter:

1-3/4 Inch

Exhaust Pipe Type:

Custom Tubing

Outside Diameter:

1.75"

$65.88

/each

$72.47

-9%

Patriot Exhaust |

#447H6911

Patriot Exhaust H6911 304 SS Exhaust Pipe J-Bends, 1-3/4 Inch

Exhaust Tubing Diameter:

1-3/4 Inch

Exhaust Pipe Type:

Custom Tubing

Outside Diameter:

1.75"

$60.39

/each

$66.43

-9%

Patriot Exhaust |

#447H6912

Patriot Exhaust H6912 304 SS Exhaust Pipe J-Bends, 1-7/8 Inch

Exhaust Tubing Diameter:

1-7/8 Inch

Exhaust Pipe Type:

Custom Tubing

Outside Diameter:

1.88"

$42.23

/each

$46.45

-9%

Patriot Exhaust |

#447H6933

Patriot Exhaust H6933 304 SS Exhaust Pipe U-Bends, 2 Inch

Exhaust Tubing Diameter:

2 Inch

Exhaust Pipe Type:

Custom Tubing

Outside Diameter:

2.00"

$93.31

/each

$102.64

-9%

Patriot Exhaust |

#447H6935

Patriot Exhaust H6935 304 SS Exhaust Pipe U-Bends, 2-1/4 Inch

Exhaust Tubing Diameter:

2-1/4 Inch

Exhaust Pipe Type:

Custom Tubing

Outside Diameter:

2.25"

$39.49

/each

$43.44

-9%

Patriot Exhaust |

#447H6936

Patriot Exhaust H6936 16 Gauge 304 SS Exhaust Pipe U-Bends, 2-1/4 Inch

Exhaust Tubing Diameter:

2-1/4 Inch

Exhaust Pipe Type:

Custom Tubing

Outside Diameter:

2.25"

$43.88

/each

$48.27

-9%

Patriot Exhaust |

#447H6937

Patriot Exhaust H6937 304 SS Exhaust Pipe U-Bends, 2-1/2 Inch

Exhaust Tubing Diameter:

2-1/2 Inch

Exhaust Pipe Type:

Custom Tubing

Outside Diameter:

2.50"

$60.39

/each

$66.43

-9%

Patriot Exhaust |

#447H7066

Patriot Exhaust H7066 16 Gauge Exhaust Pipe U-Bends, 4 Inch

(2)

Exhaust Tubing Diameter:

4 Inch

Exhaust Pipe Type:

Custom Tubing

Outside Diameter:

4.00"

$98.79

/each

$108.67

-9%

Patriot Exhaust |

#447H7068

Patriot Exhaust H7068 16 Gauge Exhaust Pipe U-Bends, 1-3/4 Inch

Exhaust Tubing Diameter:

1-3/4 Inch

Exhaust Pipe Type:

Custom Tubing

Outside Diameter:

1.75"

$43.88

/each

$48.27

-9%

Patriot Exhaust |

#447H7070

Patriot Exhaust H7070 16 Gauge Exhaust Pipe 120 Degree Bends, 3 Inch

Exhaust Tubing Diameter:

3 Inch

Exhaust Pipe Type:

Custom Tubing

Outside Diameter:

3.00"

$60.39

/each

$66.43

-9%

Patriot Exhaust |

#447H7077

Patriot Exhaust H7077 Gauge Exhaust Pipe U-Bends, 2-1/8 Inch

Exhaust Tubing Diameter:

2-1/8 Inch

Exhaust Pipe Type:

Custom Tubing

Outside Diameter:

2.13"

$27.43

/each

$30.17

-9%

Patriot Exhaust |

#447H6905

Patriot Exhaust H6905 304 Stainless Steel Exhaust Pipe, 1-5/8"

Exhaust Tubing Diameter:

1-5/8 Inch

Exhaust Pipe Type:

Custom Tubing

Outside Diameter:

1.625"

$49.37

/each

$54.31

-9%

Patriot Exhaust |

#447H6907

Patriot Exhaust H6907 304 Stainless Stee Exhaust Pipe, 1-5/8 Inch

Exhaust Tubing Diameter:

1-5/8 Inch

Exhaust Pipe Type:

Custom Tubing

Outside Diameter:

1.625"

$60.39

/each

$66.43

-9%

Patriot Exhaust |

#447H6942

Patriot Exhaust H6942 16 Gauge 304 SS Exhaust Pipe U-Bends, 3 Inch

Exhaust Tubing Diameter:

3 Inch

Exhaust Pipe Type:

Custom Tubing

Outside Diameter:

3.00"

$120.78

/each

$132.86

-9%

Patriot Exhaust |

#447H6951

Patriot Exhaust H6951 304 SS Exhaust Pipe, 45 Degree Bends 2-1/2 Inch

(1)

Exhaust Tubing Diameter:

2-1/2 Inch

Exhaust Pipe Type:

Elbow/Connector

Outside Diameter:

2.50"

$39.49

/each

$43.44

-9%

Patriot Exhaust |

#447H6952

Patriot Exhaust H6952 304 SS Exhaust Pipe, 45 Degree Bends 3 Inch

(1)

Exhaust Tubing Diameter:

3 Inch

Exhaust Pipe Type:

Elbow/Connector

Outside Diameter:

3.00"

$60.39

/each

$66.43

-9%

Patriot Exhaust |

#447H6954

Patriot Exhaust H6954 304 SS Exhaust Pipe, 90 Degree Bend, 2-1/2 Inch

Exhaust Tubing Diameter:

2-1/2 Inch

Exhaust Pipe Type:

Elbow/Connector

Outside Diameter:

2.50"

$54.86

/each

$60.35

-9%

Patriot Exhaust |

#447H6956

Patriot Exhaust H6956 J Bend Exhaust Tubing, 16 Gauge, 2 Inch

Exhaust Tubing Diameter:

2 Inch

Exhaust Pipe Type:

Custom Tubing

Outside Diameter:

2.00"

$39.49

/each

$43.44

-9%

Patriot Exhaust |

#447H7000

Patriot Exhaust H7000 18 Gauge Exhaust Pipe, 1-1/4 Inch

(3)

Exhaust Tubing Diameter:

1-1/4 Inch

Exhaust Pipe Type:

Custom Tubing

Outside Diameter:

1.25"

$27.43

/each

$30.17

-9%

Patriot Exhaust |

#447H7002

Patriot Exhaust H7002 J Bend Exhaust Tubing, 18 Gauge, 1-5/8 Inch

Exhaust Tubing Diameter:

1-5/8 Inch

Exhaust Pipe Type:

Custom Tubing

Outside Diameter:

1.625"

$43.88

/each

$48.27

-9%

Patriot Exhaust |

#447H7008

Patriot Exhaust H7008 16 Gauge Exhaust Pipe, 1-1/2 Inch

Exhaust Tubing Diameter:

1-1/2 Inch

Exhaust Pipe Type:

Custom Tubing

Outside Diameter:

1.50"

$49.37

/each

$54.31

-9%

Patriot Exhaust |

#447H7010

Patriot Exhaust H7010 18 Gauge Exhaust Pipe, 1-1/2 Inch

Exhaust Tubing Diameter:

1-1/2 Inch

Exhaust Pipe Type:

Custom Tubing

Outside Diameter:

1.50"

$24.12

/each

$26.53

-9%

Patriot Exhaust |

#447H7678

Patriot Exhaust H7678 4-1 Formed Collector, 2-1/2 Inch

Material Type:

Steel

Sold in Quantity:

Pair

$71.36

/pair

$78.50

-9%

Patriot Exhaust |

#447H7682

Patriot Exhaust H7682 4-1 Formed Collector, 3-1/2 Inch

Material Type:

Steel

Sold in Quantity:

Pair

$109.76

/pair

$120.74

-9%

Patriot Exhaust |

#447H7685

Patriot Exhaust H7685 4-1 Formed Collector, 2-1/4x3-1/2x10 Inch

Material Type:

Steel

Sold in Quantity:

Pair

$98.79

/pair

$108.67

-9%

Patriot Exhaust |

#447H7690

Patriot Exhaust H7690 4-1 Formed Collector 4 Inch

Material Type:

Steel

Sold in Quantity:

Pair

$115.30

/pair

$126.83

Showing 1 - 72 of 1,852 results

Shop Feedback:

Did you find what you are looking for?

GMC G25 Headers and Exhaust Parts

Year

Subcategory

Part

Brand

Transmission Family

Availability

Engine Family

Discounts

Price

Customer Rating

Products

Patriot Exhaust H7261 3-bolt Collector Flange Kits, 3-1/2 Inch

Patriot Exhaust H7266 Collector Flange Kit, 4 Bolt Round, 3-1/2 Inch

Patriot Exhaust H7267 Collector Flange Kit, 4 Bolt Round, 4 Inch

Patriot Exhaust H7268 Collector Flange kit, 3 Bolt, 3 Inch

Patriot Exhaust H7435 Side Exhaust Inlet, 2-2 1/2 Inch

Related Articles

Patriot Exhaust H7980 Zinc Plated Header Bolts, 10mm x 1.5 x 22mm, 16

Doug's Headers CG9006 3 bolt Collector Gaskets, 3 Inch

Patriot Exhaust H7024 18 Gauge Exhaust Pipe, 1-3/4 Inch

Patriot Exhaust H7029 18 Gauge Exhaust Pipe, 1-7/8 Inch

Patriot Exhaust H7032 J-Bend Exhaust Tubing, 16 gauge, 1-7/8 Inch

Patriot Exhaust H6909 304 SS Exhaust Pipe J-Bends, 1-3/4 Inch

Patriot Exhaust H6911 304 SS Exhaust Pipe J-Bends, 1-3/4 Inch

Patriot Exhaust H6912 304 SS Exhaust Pipe J-Bends, 1-7/8 Inch

Patriot Exhaust H6933 304 SS Exhaust Pipe U-Bends, 2 Inch

Patriot Exhaust H6935 304 SS Exhaust Pipe U-Bends, 2-1/4 Inch

Patriot Exhaust H6936 16 Gauge 304 SS Exhaust Pipe U-Bends, 2-1/4 Inch

Patriot Exhaust H6937 304 SS Exhaust Pipe U-Bends, 2-1/2 Inch

Patriot Exhaust H7066 16 Gauge Exhaust Pipe U-Bends, 4 Inch

Patriot Exhaust H7068 16 Gauge Exhaust Pipe U-Bends, 1-3/4 Inch

Patriot Exhaust H7070 16 Gauge Exhaust Pipe 120 Degree Bends, 3 Inch

Patriot Exhaust H7077 Gauge Exhaust Pipe U-Bends, 2-1/8 Inch

Patriot Exhaust H6905 304 Stainless Steel Exhaust Pipe, 1-5/8"

Patriot Exhaust H6907 304 Stainless Stee Exhaust Pipe, 1-5/8 Inch

Patriot Exhaust H6942 16 Gauge 304 SS Exhaust Pipe U-Bends, 3 Inch

Patriot Exhaust H6951 304 SS Exhaust Pipe, 45 Degree Bends 2-1/2 Inch

Patriot Exhaust H6952 304 SS Exhaust Pipe, 45 Degree Bends 3 Inch

Patriot Exhaust H6954 304 SS Exhaust Pipe, 90 Degree Bend, 2-1/2 Inch

Patriot Exhaust H6956 J Bend Exhaust Tubing, 16 Gauge, 2 Inch

Patriot Exhaust H7000 18 Gauge Exhaust Pipe, 1-1/4 Inch

Patriot Exhaust H7002 J Bend Exhaust Tubing, 18 Gauge, 1-5/8 Inch

Patriot Exhaust H7008 16 Gauge Exhaust Pipe, 1-1/2 Inch

Patriot Exhaust H7010 18 Gauge Exhaust Pipe, 1-1/2 Inch

Patriot Exhaust H7678 4-1 Formed Collector, 2-1/2 Inch

Patriot Exhaust H7682 4-1 Formed Collector, 3-1/2 Inch

Patriot Exhaust H7685 4-1 Formed Collector, 2-1/4x3-1/2x10 Inch

Patriot Exhaust H7690 4-1 Formed Collector 4 Inch