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Plymouth Roadrunner Headers

We have 5 Items In-stock. Select a year to continue.
$237.88 List Price $490.00 Save $252.12 Availability: In Stock
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HEDMAN – PAINTED HEDDERS

Is that power-robbing stock manifold still on your vehicle? If you answered yes, then replace it with a Hedman Painted Header to lower your operating temps and release extra horsepower and torque from your engine. These hedders are designed for painting, so order a can of header paint in the color that best suits your vehicle. Hedman Hedders have always been made in the USA since the company was founded over 50 years ago. Bob Hedman started out making hedders as a one man shop but word spread fast about the horsepower and torque that Hedman hedders were producing. His hedders have been in demand by top engine builders and racers since the start. Hedman’s time perfecting hedders on the track and on the dyno ensures you will get optimum performance with every Hedman Header whether it is installed on your race car or daily driver.

  • Perfect for hot rod builds on a tight budget
  • Proudly manufactured in U.S.A.
  • Tubing size is 16 to 18 gauge depending on model
  • Size of flanges are 5/16 inch
  • These hedders are designed to be painted, so pick up a can of header paint in a color of your choice

NOTE: Not legal for use or sale in California on vehicles that came equipped with emission controls from the factory.

  • SKU#: H5678030
  • Brand: Hedman
  • Color/Finish: Black
  • Emissions: 49-State Legal - no CA shipments
  • Product Fit: Direct Fit
  • Quantity Sold: Kit
  • Anticipated Ship Out Time: 1-2 Business Days
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Fits the following Plymouth Roadrunner Years:
  • 1972-1974 | 8 Cyl 6.6L | Base
  • 1969-1974 | 8 Cyl 7.2L | Base
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Rating: (see review/s)

"For the price these headers are unbeatable. they look good and fit perfect. you cant get a better deal than these" posted by: fishths on March 5, 2009

"Im a 16 year old boy in highschool working on a 1965 manual transmision mustang that we've had sittiing in a grage for 20yrs or so and everyone said that i would need someone to install them for me since i was too young and didnt know what i was doing. but i went ahead and installed them my self and to my amazment they went in fairly easy after removing the recent maifolds and clutch linkage. i would highly recomend these to any one who is looking good looking, good sounding, and that are easy on the pocket pook." posted by: crazy mechanic on January 18, 2008

$321.95 List Price $379.90 Save $57.95 Availability: In Stock
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FLOWTECH II FULL-LENGTH HEADERS, SILVER LUSTER CERAMIC-COATED -- 49-state legal; Not for sale or use in California; Cannot be shipped to California addresses; 1.625 in. Primary Tube, 3 in. Collector, These Headers Are Precision-Engineered And Leak-Tested To Provide The Maximum Performance And Fuel Efficiency Of Your Engine, Formed From Specially Selected 0.060 Cold Roll Flash Controlled Tubing With NASA-Developed Silver Luster Ceramic Coating For Rust And Corrosion Resistance, They Feature Flowtech's Exclusive, Thick, And Mandrel-Formed Power Plenum Collector, All Ports Are Precisely Fitted And Finished With Sturdy And Leaf-Proof O-Ringed Port Seals, They Come With All Mounting Hardware Including Bolts, Nuts, And Premium Gaskets, Must Modify Stock Exhaust To Retain Catalytic Converters, Will Not Fit With A.I.R. Injection Pump, It May Be Necessary To Raise The Automotive Column Cross Shaft Linkage By Rotating The Mounting Brackets On Frame And Transmission 180 Degrees, Stock Replacement, Bolts Directly To Factory Head pipes, Will Work With Factory Exhaust System, Will Not Fit Vehicles With Power Steering, With Flowtech's 90-Day Warranty
  • SKU#: F3133100
  • Brand: Flowtech
  • Fit Note: Manual Steering, Will Not Fit With A.I.R. Injection Pump
  • Color/Finish: Silver Ceramic
  • Emissions: 49-State Legal - no CA shipments
  • Product Fit: Direct Fit
  • Quantity Sold: Set of 2
  • Recommended Use: Performance
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Fits the following Plymouth Roadrunner Years:
  • 1974 | 8 Cyl 5.9L | Base
  • 1968-1974 | 8 Cyl 5.2L | Base
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$712.56 List Price $931.45 Save $218.89 Availability: In Stock
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FLOWMASTER  – AMERICAN THUNDER EXHAUST SYSTEMS

Flowmaster’s American Thunder chambered exhaust system is dyno-proven to dramatically increase the power band, giving you more horsepower, torque, fuel economy and a new image with an aggressive, rich exhaust tone. Flowmaster, known as ‘the exhaust technology company,’ is a leading manufacturer of high performance exhaust systems and respected for design, innovation and engineering.

  • Flowmaster’s most popular exhaust system
  • Features an aggressive sound
  • 3-year limited warranty for aluminized steel/lifetime warranty for stainless steel
  • Come in aluminized or stainless steel
  • Proven to improve torque, horsepower and gas mileage
  • Mandrel-bent tubing allows for continuous airflow
  • Quick and easy installation
  • Best for muscle cars and trucks
  • Passenger side, split  or driver side exit design
  • Dyno-tested
  • Direct fit by vehicle year, make and model

  • SKU#: F13817390
  • Brand: Flowmaster
  • Quantity Sold: Assembly
  • Muffler Sound Level: Moderate-to-Aggressive
  • Recommended Use: Performance
  • Advertised Power Gains: Typically 5-7% increase over stock
  • Anticipated Ship Out Time: Same day - 1 business day
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Fits the following Plymouth Roadrunner Years:
  • 1968-1970 | 8 Cyl 7.2L | Base
  • 1968 | 8 Cyl 4.5L | Base
$342.47 List Price $404.11 Save $61.64 Availability: In Stock
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HEARTTHROB EXHAUST – HEADER-BACK DUAL EXIT EXHAUST SYSTEMS

A power-filled and fire-breathing exhaust tone is what you will hear from every Heartthrob Header-Back Duel Exit Exhaust System. Heartthrob Exhaust makes this exhaust system for a wide selection of older vehicles. Bolting this effective exhaust system on your classic vehicle will rejuvenate your ride and make you want to drive it even more! The header-back duel-exit design assists with maximizing exhaust flow for a noticeable horsepower and torque boost and the powerful sound of it is sure to put a smile on your face. Heartthrob Exhausts are manufactured in a high tech facility in Minnesota with state-of-the-art computer based CNC manufacturing tooling and equipment. Run by a staff of 30 of dutiful employees, all of whom are knowledge-filled exhaust experts, assures you will get a perfect fitting exhaust for your vehicle. This small family-owned exhaust company now has over 37 years of exhaust manufacturing experience and takes pride in every exhaust they make.

NOTE: Most aftermarket headers may require modifications

  • Manufactured in USA
  • Installs directly to your vehicle’s stock full-length headers (with 3 inch collectors)
  • All header-back kits do not include mufflers
  • Aluminized tubing (16 gauge)
  • Dyno-tested and flow bench tested for quality assurance
  • Engineered for no restrictions from the mandrel bent tubing process
  • This kit is not street legal only if your vehicle was equipped with a catalytic converter when new
  • SKU#: HEA8158729M
  • Brand: Heartthrob Exhaust
  • Fit Note: Coupe
  • Emissions: Not Street Legal In Ca Or Any State Adopting Ca Emissions - Intended For Closed Circuit Competition Use Only
  • Quantity Sold: Assembly
  • Muffler Sound Level: Moderate
  • Recommended Use: Performance
  • Anticipated Ship Out Time: 1-2 Business Days
(see more)
Fits the following Plymouth Roadrunner Years:
  • 1974 | 8 Cyl 5.9L | Base
  • 1972-1974 | 8 Cyl 6.6L | Base
(see more)
$241.70 List Price $285.21 Save $43.51 Availability: In Stock
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HEARTTHROB EXHAUST – HEADER-BACK DUAL EXIT EXHAUST SYSTEMS

A power-filled and fire-breathing exhaust tone is what you will hear from every Heartthrob Header-Back Duel Exit Exhaust System. Heartthrob Exhaust makes this exhaust system for a wide selection of older vehicles. Bolting this effective exhaust system on your classic vehicle will rejuvenate your ride and make you want to drive it even more! The header-back duel-exit design assists with maximizing exhaust flow for a noticeable horsepower and torque boost and the powerful sound of it is sure to put a smile on your face. Heartthrob Exhausts are manufactured in a high tech facility in Minnesota with state-of-the-art computer based CNC manufacturing tooling and equipment. Run by a staff of 30 of dutiful employees, all of whom are knowledge-filled exhaust experts, assures you will get a perfect fitting exhaust for your vehicle. This small family-owned exhaust company now has over 37 years of exhaust manufacturing experience and takes pride in every exhaust they make.

NOTE: Most aftermarket headers may require modifications

  • Manufactured in USA
  • Installs directly to your vehicle’s stock full-length headers (with 3 inch collectors)
  • All header-back kits do not include mufflers
  • Aluminized tubing (16 gauge)
  • Dyno-tested and flow bench tested for quality assurance
  • Engineered for no restrictions from the mandrel bent tubing process
  • This kit is not street legal only if your vehicle was equipped with a catalytic converter when new
  • SKU#: HEA8158722
  • Brand: Heartthrob Exhaust
  • Fit Note: Coupe
  • Emissions: Not Street Legal In Ca Or Any State Adopting Ca Emissions - Intended For Closed Circuit Competition Use Only
  • Quantity Sold: Assembly
  • Muffler Sound Level: No Muffler
  • Recommended Use: Performance
  • Anticipated Ship Out Time: 1-2 Business Days
(see more)
Fits the following Plymouth Roadrunner Years:
  • 1974 | 8 Cyl 5.9L | Base
  • 1972-1974 | 8 Cyl 6.6L | Base
(see more)
Select more Plymouth Roadrunner parts under Headers, Manifolds & Components from list below.