1981 GMC C2500 Headers and Exhaust Parts

1,883 products fit your

1981 GMC C2500

Add Engine

Show Direct Fit Parts

1,883 products

Sort By:

Clear All

Fitment

1981 GMC C2500

Products

New Product

MagnaFlow |

#37613125

MagnaFlow 13125 Redpack 3.5" x 18" Round Glasspack Perf. Muffler

Muffler Type:

Glass Pack

Material Type:

Steel

$48.00

/each

New Product

MagnaFlow |

#37613129

MagnaFlow 13129 Redpack 4" x 18" Round Glasspack Perf. Muffler

Muffler Type:

Glass Pack

Material Type:

Steel

$68.00

/each

-34%

MagnaFlow |

#37613278

MagnaFlow 13278 4x9 Inch Oval Center/Dual Chambered Muffler

Muffler Type:

Multi-Chamber

Inlet Diameter:

Outlet Diameter:

2.25"

$162.00

/each

$245.94

-34%

MagnaFlow |

#37614211

MagnaFlow 14211 5x8 Inch Oval Offset/OffsetStainless Muffler

Muffler Type:

Straight-Through

Inlet Diameter:

2.5"

Outlet Diameter:

2.5"

$174.00

/each

$264.52

-34%

MagnaFlow |

#37614316

MagnaFlow 14316 4x9 Inch Oval Center/Center Stainless Muffler

Muffler Type:

Straight-Through

Inlet Diameter:

2.5"

Outlet Diameter:

2.5"

$164.00

/each

$249.63

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.

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.

Installing 3" Ram Horn Manifolds on a C/10

See how to install 3" Ram Horn exhaust manifolds on a C/10 with a 406 engine. Learn some tips on welding steel tubing to a cast iron manifold and how they are modified to fit the truck.

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.

-34%

MagnaFlow |

#37610741

MagnaFlow 10741 2.5 Inch 3 in 1 Performance Exhaust Pipe

Exhaust Tubing Diameter:

2-1/2 Inch

Exhaust Pipe Type:

Custom Tubing

Outside Diameter:

2.50"

$159.00

/each

$241.58

$439 Off

MagnaFlow |

#37610720

MagnaFlow 10720 2.5 Inch 90 Degree Bend Exhaust Pipe, 10 Pack

Exhaust Tubing Diameter:

2-1/2 Inch

Exhaust Pipe Type:

Elbow/Connector

Outside Diameter:

2.50"

$838.00

/each

$1,276.79

$702 Off

MagnaFlow |

#37610760

MagnaFlow 10760 2.25 Inch 3 in 1 Performance Exhaust Pipe

Exhaust Tubing Diameter:

2-1/4 Inch

Exhaust Pipe Type:

Custom Tubing

Outside Diameter:

2.25"

$1,341.00

/each

$2,042.72

-33%

MagnaFlow |

#37610167

MagnaFlow 10167 5 Inch Performance Exhaust Stainless V-Band Clamp

Exhaust Clamp Type:

Band

Inside Diameter:

$134.00

/set

$202.80

-34%

MagnaFlow |

#37610169

MagnaFlow 10169 3 Inch Performance Exhaust Stainless V-Band Clamp

Exhaust Clamp Type:

V-Band

Inside Diameter:

$101.00

/each

$153.36

$420 Off

MagnaFlow |

#37610701

MagnaFlow 10701 2.25 Inch Stainless Custom Builder Exhaust System

Exhaust System Type:

Header-Back

Single or Dual:

Dual

Exhaust Tubing Diameter:

2-1/4 Inch

$802.00

/each

$1,222.01

-33%

MagnaFlow |

#37610706

MagnaFlow 10706 2.5 In 90 Degree Bend Performance Exhaust Pipe

Exhaust Tubing Diameter:

2-1/2 Inch

Exhaust Pipe Type:

Elbow/Connector

Outside Diameter:

2.50"

$93.00

/each

$140.40

$728 Off

MagnaFlow |

#37610723

MagnaFlow 10723 3 Inch 180 Degree Bend Exhaust Pipe, 10 Pack

Exhaust Tubing Diameter:

3 Inch

Exhaust Pipe Type:

Custom Tubing

Outside Diameter:

3.00"

$1,391.00

/each

$2,119.47

$518 Off

MagnaFlow |

#37610725

MagnaFlow 10725 3 Inch 45 Degree Bend Exhaust Pipe, 10 Pack

Exhaust Tubing Diameter:

3 Inch

Exhaust Pipe Type:

Elbow/Connector

Outside Diameter:

3.00"

$989.00

/each

$1,506.64

-33%

MagnaFlow |

#37610731

MagnaFlow 10731 2.5 Inch Performance Exhaust Stainless U-Pipe

Exhaust Tubing Diameter:

2-1/2 Inch

Exhaust Pipe Type:

Elbow/Connector

$101.00

/each

$152.96

Intellitronix |

#188C9017G

Intellitronix C9017G LED Digital EGT Gauge, Green

Gauge Face Color:

Black

Bezel Finish:

Black

Lighted:

Yes

$214.48

/each

Intellitronix |

#188C9017R

Intellitronix C9017R LED Digital EGT Gauge, Red

Gauge Face Color:

Black

Bezel Finish:

Black

Lighted:

Yes

$214.48

/each

Intellitronix |

#188CS9017B

Intellitronix CS9017B LED Digital EGT Gauge, Blue

Gauge Face Color:

Black

Bezel Finish:

Chrome

Lighted:

Yes

$221.21

/each

Intellitronix |

#188CS9017G

Intellitronix CS9017G LED Digital EGT Gauge, Green

Gauge Face Color:

Black

Bezel Finish:

Chrome

Lighted:

Yes

$221.21

/each

United Pacific |

#92637092

United Pacific C2003 Chevy Bowtie Exhaust Deflector

Material Type:

Stainless Steel

Sold in Quantity:

Each

$23.99

/each

-16%

BBK 31015 Varitune Adjustable Muffler Double Offset, Stainless

BBK Performance |

#58531015

BBK 31015 Varitune Adjustable Muffler Double Offset, Stainless

Muffler Type:

Multi-Chamber

Sold in Quantity:

Each

$149.99

/each

$179.99

Intellitronix |

#188M9011B

Intellitronix M9011B LED Digital Boost, Blue

Gauge Style:

Digital

Gauge Range:

0-30 PSI

Gauge Face Color:

Black

$115.63

/each

-34%

MagnaFlow |

#37612254

MagnaFlow 12254 5x8 Inch Oval Center/Offset Stainless Muffler

Muffler Type:

Straight-Through

Inlet Diameter:

Outlet Diameter:

$146.00

/each

$221.39

-34%

MagnaFlow |

#37612276

MagnaFlow 12276 5x8 Inch Oval Center/Center Stainless Muffler

Muffler Type:

Straight-Through

Inlet Diameter:

2.5"

Outlet Diameter:

2.5"

$174.00

/each

$264.35

$123 Off

MagnaFlow |

#37612579

MagnaFlow 12579 5x11 Inch Oval Center/Center Stainless Muffler

Muffler Type:

Straight-Through

Inlet Diameter:

Outlet Diameter:

$236.00

/each

$359.49

-34%

MagnaFlow |

#37612770

MagnaFlow 12770 7x7 Inch Round Center/Center Stainless Muffler

Muffler Type:

Straight-Through

Inlet Diameter:

Outlet Diameter:

$173.00

/each

$262.23

$112 Off

MagnaFlow |

#37612773

MagnaFlow 12773 7x7 Inch Round Center/Center Stainless Muffler

Muffler Type:

Straight-Through

Inlet Diameter:

Outlet Diameter:

$216.00

/each

$327.98

$118 Off

MagnaFlow |

#37612776

MagnaFlow 12776 7x7 Inch Round Center/Center Stainless Muffler

Muffler Type:

Straight-Through

Inlet Diameter:

Outlet Diameter:

$226.00

/each

$343.76

-34%

MagnaFlow |

#37612866

MagnaFlow 12866 5x5 Inch Round Center/Center Stainless Muffler

Muffler Type:

Straight-Through

Inlet Diameter:

2.5"

Outlet Diameter:

2.5"

$151.00

/each

$229.77

-34%

MagnaFlow |

#37612641

MagnaFlow 12641 6x6 Inch Round Center/Center Stainless Muffler

Muffler Type:

Straight-Through

Inlet Diameter:

Outlet Diameter:

$189.00

/each

$287.41

-34%

MagnaFlow |

#37612649

MagnaFlow 12649 6x6 Inch Round Center/Center Stainless Muffler

Muffler Type:

Straight-Through

Inlet Diameter:

Outlet Diameter:

$162.00

/each

$245.87

$111 Off

MagnaFlow |

#37612587

MagnaFlow 12587 5x11 Inch Oval Center/Dual Stainless Muffler

Muffler Type:

Straight-Through

Inlet Diameter:

3.5"

Outlet Diameter:

2.5"

$214.00

/each

$324.76

-33%

MagnaFlow |

#37612635

MagnaFlow 12635 6x6 Inch Round Offset/Offset Stainless Muffler

Muffler Type:

Straight-Through

Inlet Diameter:

2.25"

Outlet Diameter:

2.25"

$130.00

/each

$196.64

$120 Off

MagnaFlow |

#37612763

MagnaFlow 12763 7x7 Inch Round Center/Dual Stainless Muffler

Muffler Type:

Straight-Through

Inlet Diameter:

Outlet Diameter:

2.5"

$230.00

/each

$350.03

-34%

MagnaFlow |

#37635114

MagnaFlow 35114 Stainless 3.5 Inch Round Polished Exhaust Tip

Exhaust Tubing Diameter:

2-1/2 Inch

Finish:

Polished

$84.00

/each

$127.70

-33%

MagnaFlow |

#37635169

MagnaFlow 35169 Stainless 3x3.75 Inch Oval Polished Exhaust Tip

Exhaust Tubing Diameter:

2-1/4 Inch

Finish:

Polished

$114.00

/each

$172.40

Showing 1 - 180 of 1,883 results

Shop Feedback:

Did you find what you are looking for?

1981 GMC C2500 Headers and Exhaust Parts

Subcategory

Part

Brand

Transmission Family

Availability

Engine Family

Discounts

Price

Customer Rating

Products

MagnaFlow 13125 Redpack 3.5" x 18" Round Glasspack Perf. Muffler

MagnaFlow 13129 Redpack 4" x 18" Round Glasspack Perf. Muffler

MagnaFlow 13278 4x9 Inch Oval Center/Dual Chambered Muffler

MagnaFlow 14211 5x8 Inch Oval Offset/OffsetStainless Muffler

MagnaFlow 14316 4x9 Inch Oval Center/Center Stainless Muffler

Related Articles

MagnaFlow 10741 2.5 Inch 3 in 1 Performance Exhaust Pipe

MagnaFlow 10720 2.5 Inch 90 Degree Bend Exhaust Pipe, 10 Pack

MagnaFlow 10760 2.25 Inch 3 in 1 Performance Exhaust Pipe

MagnaFlow 10167 5 Inch Performance Exhaust Stainless V-Band Clamp

MagnaFlow 10169 3 Inch Performance Exhaust Stainless V-Band Clamp

MagnaFlow 10701 2.25 Inch Stainless Custom Builder Exhaust System

MagnaFlow 10706 2.5 In 90 Degree Bend Performance Exhaust Pipe

MagnaFlow 10723 3 Inch 180 Degree Bend Exhaust Pipe, 10 Pack

MagnaFlow 10725 3 Inch 45 Degree Bend Exhaust Pipe, 10 Pack

MagnaFlow 10731 2.5 Inch Performance Exhaust Stainless U-Pipe

Intellitronix C9017G LED Digital EGT Gauge, Green

Intellitronix C9017R LED Digital EGT Gauge, Red

Intellitronix CS9017B LED Digital EGT Gauge, Blue

Intellitronix CS9017G LED Digital EGT Gauge, Green

United Pacific C2003 Chevy Bowtie Exhaust Deflector

BBK 31015 Varitune Adjustable Muffler Double Offset, Stainless

Intellitronix M9011B LED Digital Boost, Blue

MagnaFlow 12254 5x8 Inch Oval Center/Offset Stainless Muffler

MagnaFlow 12276 5x8 Inch Oval Center/Center Stainless Muffler

MagnaFlow 12579 5x11 Inch Oval Center/Center Stainless Muffler

MagnaFlow 12770 7x7 Inch Round Center/Center Stainless Muffler

MagnaFlow 12773 7x7 Inch Round Center/Center Stainless Muffler

MagnaFlow 12776 7x7 Inch Round Center/Center Stainless Muffler

MagnaFlow 12866 5x5 Inch Round Center/Center Stainless Muffler

MagnaFlow 12641 6x6 Inch Round Center/Center Stainless Muffler

MagnaFlow 12649 6x6 Inch Round Center/Center Stainless Muffler

MagnaFlow 12587 5x11 Inch Oval Center/Dual Stainless Muffler

MagnaFlow 12635 6x6 Inch Round Offset/Offset Stainless Muffler

MagnaFlow 12763 7x7 Inch Round Center/Dual Stainless Muffler

MagnaFlow 35114 Stainless 3.5 Inch Round Polished Exhaust Tip

MagnaFlow 35169 Stainless 3x3.75 Inch Oval Polished Exhaust Tip