GMC K25 Headers and Exhaust Parts

Get an exact fit for your

GMC K25

Year

Choose Year

Year

Make

Choose Make

Make

Model

Choose Model

Model

1,925 products

Sort By:

Clear All

Fitment

GMC K25

Products

AutoMeter |

#1826181

AutoMeter 6181 Boost Controller, 2 1/16 Inch, Digital, Cobalt

Overall Diameter:

2-1/16

Body Diameter:

2.06"

Gauge Type:

Electric

$473.99

/each

AutoMeter |

#1827545

AutoMeter 7545 Pyrometer Gauge, 2 1/16 Inch, 2000 Deg., Phantom

Gauge Face Color:

White

Bezel Finish:

Black

Overall Diameter:

2-1/16

$238.99

/each

AutoMeter |

#1827559

AutoMeter 7559 Vac/Boost, 2 1/16 Inch

Overall Diameter:

2-1/16

Body Diameter:

2.06"

Gauge Type:

Electric

$286.99

/each

AutoMeter |

#1825244

AutoMeter 5244 Tc Kit, Type K, 3/16 Inch Dia, Open Tip, 10Ft

Sending Unit:

Electrical

Sold in Quantity:

Kit

$177.99

/each

AutoMeter |

#1824306

AutoMeter 4306 Ultra-Lite Mech. Boost Gauge,100 PSI,2-1/16 In.

Overall Diameter:

2-1/16

Body Diameter:

2.06"

Gauge Type:

Mechanical

$98.99

/each

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.

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.

Tri-5 Headers with a Rack and Pinion System

In this Tech Tip, John explains the design behind a set of headers destined for a Tri-5 using a traditional rack and pinion style steering system.

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.

Speedway Tech Talk - Maintaining Your Headers

Maintaining your headers is an important part of any hot rod. Pat gives some tips and demonstrates how well Purple Metal Polish works for keeping your headers looking great.

AutoMeter |

#1824344

AutoMeter 4344 Ultra-Lite Digital Stepper Motor Pyrometer Gauge

Gauge Face Color:

Silver

Bezel Finish:

Brushed Aluminum

Overall Diameter:

2-1/16"

$233.99

/each

AutoMeter |

#1826570

AutoMeter 6570 Boost, 2 1/16 Inch, 60PSI, Silver Dial W/ Red Led

Overall Diameter:

2-1/16

Body Diameter:

2.06"

Gauge Type:

Electric

$218.99

/each

AutoMeter |

#1825944M

AutoMeter 5944-M Pyrometer Gauge, 2 1/16 Inch, 900 Degrees C, ES

Gauge Face Color:

Black

Bezel Finish:

Black

Overall Diameter:

2-1/16

$236.99

/each

AutoMeter |

#1826144M

AutoMeter 6144-M Pyrometer Gauge, 2 1/16 Inch, 900 Deg. C, Cobalt

Gauge Face Color:

Black

Bezel Finish:

Silver

Overall Diameter:

2-1/16

$237.99

/each

AutoMeter |

#1823859

AutoMeter 3859 Vac/Boost, 2 1/16 Inch

Overall Diameter:

2-1/16

Body Diameter:

2.06"

Gauge Type:

Electric

$244.99

/each

AutoMeter |

#1825701

AutoMeter 5701 Phantom Mechanical Boost/Vacuum Gauge, 2-1/16 Inch

Overall Diameter:

2-1/16

Body Diameter:

2.06"

Gauge Type:

Mechanical

$97.99

/each

AutoMeter |

#1827305

AutoMeter 7305 NV Mechanical Boost Gauge, 60 PSI, 2-1/16 Inch

Overall Diameter:

2-1/16

Body Diameter:

2.06"

Gauge Type:

Mechanical

$108.99

/each

AutoMeter |

#1827345

AutoMeter 7345 Pyrometer Gauge, 2 1/16 Inch, 2000 Deg., NV

Gauge Face Color:

White/Luminescent green

Bezel Finish:

Silver

Overall Diameter:

2-1/16

$242.99

/each

AutoMeter |

#1826359

AutoMeter 6359 Sport-Comp Digital Digital Boost/Vacuum Gauge

Overall Diameter:

2-1/16

Body Diameter:

2.06"

Gauge Type:

Electric

$212.99

/each

AutoMeter |

#182P302328

AutoMeter P302328 Vac/Boost, 2 1/16 Inch, Black/Black, Spek

Overall Diameter:

2-1/16

Body Diameter:

2.06"

Gauge Type:

Electric

$265.99

/each

Patriot H7251 3" Diameter, 2 1/4" Outlet Collector Reducers

Patriot Exhaust |

#9307251

Patriot H7251 3" Diameter, 2 1/4" Outlet Collector Reducers

Sold in Quantity:

Pair

Flange Style:

3-Bolt

$54.86

/pair

-7%

Holley |

#425554100

Holley 554-100 Replacement NTK Wideband Oxygen Sensor

(2)

GTIN Code:

090127666685

Sold in Quantity:

Each

$382.95

/each

$415.95

-9%

Patriot Exhaust |

#9308065

Patriot Exhaust Tight Tuck S/B Chevy Block Hugger Headers

(6)

Header Tube Type:

Block Hugger

Exhaust Port Shape:

Oval

Flange Style:

Standard

as low as

$527.07

/pair

$579.78

-9%

Patriot Exhaust |

#9308080

Patriot Exhaust E-Rod LS Tube Headers, Steel

(1)

Header Tube Type:

Block Hugger

Exhaust Port Shape:

Round

Flange Style:

Standard

as low as

$496.75

/pair

$546.43

-7%

Hooker 2001HKR Block Hugger Header, SB Chevy, 1.625 Inch Tube Size

Hooker Headers |

#4252001HKR

Hooker 2001HKR Block Hugger Header, SB Chevy, 1.625 Inch Tube Size

(1)

Header Tube Type:

Block Hugger

Exhaust Port Shape:

Round

Flange Style:

Standard

$675.95

/set

$731.95

Flowtech 50552FLT Warlock BYPASS Series Racing Muffler, 2-1/2 Inch

Flowtech Exhaust |

#42550552FLT

Flowtech 50552FLT Warlock BYPASS Series Racing Muffler, 2-1/2 Inch

Muffler Type:

Turbo-style/Straight-through

Inlet Diameter:

2.5"

Outlet Diameter:

2.5"

$94.95

/each

AutoMeter |

#182880031

AutoMeter 880031 Mopar Digital Stepper Motor Pyrometer Gauge

Gauge Face Color:

White

Bezel Finish:

Brushed Aluminum

Overall Diameter:

2-1/16

$257.99

/each

K&N |

#4658521688

K&N 85-21688 Oxygen Sensor Weld-In Bung, Female 18mm x 1.5, Each

Material Type:

Steel

Sold in Quantity:

Each

Thread Pitch:

18mm x 1.50

$24.99

/each

AutoMeter |

#1825257

AutoMeter 5257 Pyrometer Extension Module for StepperMotor Gauges

Sold in Quantity:

Each

GTIN Code:

046074052576

$105.99

/each

AutoMeter |

#1827144

AutoMeter 7144 Pyrometer Gauge, 2 1/16 Inch, 1600 Deg., C2

Gauge Face Color:

White/Luminescent blue

Bezel Finish:

Silver

Overall Diameter:

2-1/16

$243.99

/each

AutoMeter |

#1823377

AutoMeter 3377 Vac/Boost, 2 1/16 Inch, W/Peak And Warning

Overall Diameter:

2-1/16

Body Diameter:

2.06"

Gauge Type:

Electric

$261.99

/each

AutoMeter |

#1821258

AutoMeter 1258 Vac/Boost, 2 1/16 Inch

Overall Diameter:

2-1/16

Body Diameter:

2.06"

Gauge Type:

Electric

$258.99

/each

AutoMeter |

#1825677

AutoMeter 5677 Vac/Boost, 2 1/16 Inch, W/Peak And Warn, Elite

Overall Diameter:

2-1/16

Body Diameter:

2.06"

Gauge Type:

Electric

$306.99

/each

-9%

Patriot Exhaust |

#91013104

Patriot Exhaust H3801 Glasspack Header Muffler, 3 In/2 Out, EA

(1)

Inlet Diameter:

Outlet Diameter:

$94.39

/each

$103.83

-9%

Patriot Exhaust |

#91013105

Patriot Exhaust H3805 Glasspack Header Muffler, 3-1/2 In/2 Out, EA

(1)

Inlet Diameter:

3.5"

Outlet Diameter:

$102.10

/each

$112.31

Dynatech |

#31177606352

Dynatech® 776-06352 Split Flow Race Muffler

Inlet Diameter:

3.5"

Outlet Diameter:

3.5"

$129.99

/each

Dynatech |

#31179460209

Dynatech® 794-60209 Mild Steel Mandrel J-Bend Pipe, 2-1/2"

Exhaust Tubing Diameter:

2-1/2 Inch

Exhaust Pipe Type:

Custom Tubing

Outside Diameter:

2.50"

$35.99

/each

Speedway Header and Exhaust Wrap, 1 Inch x 50 Ft, Black Color

Speedway Motors |

#91013804

Speedway Header and Exhaust Wrap, 1 Inch x 50 Ft, Black Color

(6)

Color:

Black

Sold in Quantity:

Each

$31.99

/each

-9%

Flowmaster |

#37843043

Flowmaster Mufflers 43043 40 Series Muffler, Offset Inlet/Outlet, 3 In

(1)

Muffler Type:

Reflection

Inlet Diameter:

Outlet Diameter:

$101.95

/each

$112.95

-11%

Flowmaster |

#378124184

Flowmaster 12418409 Hushpower II 409 Muffler 2.25 Inch ID 18 Inch

(3)

Inlet Diameter:

2.25"

Outlet Diameter:

2.25"

$199.95

/each

$224.95

Dynatech |

#31178003519

Dynatech® 780-03519 Plain Steel Merge Collector 2-3/8 x 4-1/2

Material Type:

Steel

Sold in Quantity:

Each

$254.99

/each

Showing 1 - 72 of 1,925 results

Shop Feedback:

Did you find what you are looking for?

GMC K25 Headers and Exhaust Parts

Year

Subcategory

Part

Brand

Transmission Family

Availability

Engine Family

Discounts

Price

Customer Rating

Products

AutoMeter 6181 Boost Controller, 2 1/16 Inch, Digital, Cobalt

AutoMeter 7545 Pyrometer Gauge, 2 1/16 Inch, 2000 Deg., Phantom

AutoMeter 7559 Vac/Boost, 2 1/16 Inch

AutoMeter 5244 Tc Kit, Type K, 3/16 Inch Dia, Open Tip, 10Ft

AutoMeter 4306 Ultra-Lite Mech. Boost Gauge,100 PSI,2-1/16 In.

Related Articles

AutoMeter 4344 Ultra-Lite Digital Stepper Motor Pyrometer Gauge

AutoMeter 6570 Boost, 2 1/16 Inch, 60PSI, Silver Dial W/ Red Led

AutoMeter 5944-M Pyrometer Gauge, 2 1/16 Inch, 900 Degrees C, ES

AutoMeter 6144-M Pyrometer Gauge, 2 1/16 Inch, 900 Deg. C, Cobalt

AutoMeter 3859 Vac/Boost, 2 1/16 Inch

AutoMeter 5701 Phantom Mechanical Boost/Vacuum Gauge, 2-1/16 Inch

AutoMeter 7305 NV Mechanical Boost Gauge, 60 PSI, 2-1/16 Inch

AutoMeter 7345 Pyrometer Gauge, 2 1/16 Inch, 2000 Deg., NV

AutoMeter 6359 Sport-Comp Digital Digital Boost/Vacuum Gauge

AutoMeter P302328 Vac/Boost, 2 1/16 Inch, Black/Black, Spek

Patriot H7251 3" Diameter, 2 1/4" Outlet Collector Reducers

Holley 554-100 Replacement NTK Wideband Oxygen Sensor

Patriot Exhaust Tight Tuck S/B Chevy Block Hugger Headers

Patriot Exhaust E-Rod LS Tube Headers, Steel

Hooker 2001HKR Block Hugger Header, SB Chevy, 1.625 Inch Tube Size

Flowtech 50552FLT Warlock BYPASS Series Racing Muffler, 2-1/2 Inch

AutoMeter 880031 Mopar Digital Stepper Motor Pyrometer Gauge

K&N 85-21688 Oxygen Sensor Weld-In Bung, Female 18mm x 1.5, Each

AutoMeter 5257 Pyrometer Extension Module for StepperMotor Gauges

AutoMeter 7144 Pyrometer Gauge, 2 1/16 Inch, 1600 Deg., C2

AutoMeter 3377 Vac/Boost, 2 1/16 Inch, W/Peak And Warning

AutoMeter 1258 Vac/Boost, 2 1/16 Inch

AutoMeter 5677 Vac/Boost, 2 1/16 Inch, W/Peak And Warn, Elite

Patriot Exhaust H3801 Glasspack Header Muffler, 3 In/2 Out, EA

Patriot Exhaust H3805 Glasspack Header Muffler, 3-1/2 In/2 Out, EA

Dynatech® 776-06352 Split Flow Race Muffler

Dynatech® 794-60209 Mild Steel Mandrel J-Bend Pipe, 2-1/2"

Speedway Header and Exhaust Wrap, 1 Inch x 50 Ft, Black Color

Flowmaster Mufflers 43043 40 Series Muffler, Offset Inlet/Outlet, 3 In

Flowmaster 12418409 Hushpower II 409 Muffler 2.25 Inch ID 18 Inch

Dynatech® 780-03519 Plain Steel Merge Collector 2-3/8 x 4-1/2