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Headers for 1965 Pontiac GTO

We have 4 Items In-stock. Select your vehicle's Submodel to continue.

Hedman Hi-Tech Coating (HTC) Hedders

HEDMAN – HI-TECH COATING (HTC) HEADERS

Do you drive your vehicle in extreme high heat conditions such as when racing or towing? If you answered yes, then replace your power-robbing stock manifold with Hedman Hi-Tech Coating (HTC) Headers to lower your operating temps and release extra horsepower and torque from your engine. Hedman Headers have always been made in the USA since the company was founded over 50 years ago. Back in the 1980s, Hedman pioneered the use of ceramic metallic coatings for headers after observing its use in the aerospace industry. Bob Hedman started out making headers as a one man shop but word spread fast about the horsepower and torque that Hedman headers were producing. His headers have been in demand by top engine builders and racers since the start. Hedman’s time perfecting headers 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.

  • Handles temps up to 1,400 degrees and protects from corrosion with ceramic metallic coating
  • Proudly manufactured in U.S.A.
  • Perfect for towing vehicles and motor homes
  • The ceramic metallic coating can withstand high-heat situations like racing or towing 
  • Keeps under hood temps lower
  • Will not chip, peel or turn blue like chrome

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

Hedman Headers, Hedman HTC Hedders, Steel, 3-1
$537.25 List Price $1,227.14 Save $689.89 Availability: In Stock
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  • SKU#: H5628146
  • Color/Finish: Metallic ceramic coated
  • Emissions: 49-State Legal - no CA shipments
  • Product Fit: Direct Fit
  • Quantity Sold: Kit
  • Anticipated Ship Out Time: 2-3 business days
  • Bolts/ Studs Included: Yes
  • Collector Attachment Style: Flange
  • Collector Diameter: 3 in.
  • Emissions Legality: 49-State Legal - no CA shipments
  • Gaskets Included: Yes
  • Head Flange Style: Standard
  • Head Flange Thickness: 1/4 in.
  • Header Style: Long tube
  • Includes: Premium gasket, installation hardware
  • Notes: With out Smog Injection Or Injection Heads
  • Number of Cylinders: 8
  • Port Shape: Round
  • Primary Tube Diameter: 1.63 - 2 in.
  • Primary Tube Thickness: 18 Gauge
  • Primary Tube Wall Thickness: 18-gauge
  • Warranty: Lifetime Hedman limited warranty with 5-year limited warranty on coating
see more Fits the following 1965 Pontiac GTO submodels:
  • 8 Cyl 5.3L | Base
  • 8 Cyl 6.4L | Base

49-state legal - no CA shipments Flowtech II Headers

Flowtech II Full Length Headers are made to deliver maximum and leak-free performance using precise engineering and rigorous testing methods. These full length headers are built using select cold roll flash mild steel tubing and Flowtech's own thick mandrel-formed Power Plenum collector. Furthermore, their entire ports are tight fitted with durable and leaf-proof O-ring seals.

Features:
  • Enhance engine fuel economy
  • Precision fit and leak-proof construction for optimum performance

Notes:

  • 49-state legal; Not for sale or use in California; Not legal in California and other states adopting California Emissions Standards; Not for sale or use in California and other states adopting California Emissions Standards; Cannot be shipped to California and such states
Flowtech Headers, Flowtech II, Steel, 4-1
$326.33 List Price $385.07 Save $58.74 Availability: In Stock
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  • SKU#: F3131170
  • Color/Finish: Silver ceramic coated
  • Emissions: 49-State Legal - no CA shipments
  • Product Fit: Minor Modifications
  • Quantity Sold: Kit
  • Anticipated Ship Out Time: Same day - 1 business day
  • Collector Attachment Style: Weld-On
  • Collector Diameter: 3 in.
  • Equal Length Primary Tubes: Yes
  • Head Flange Style: Standard
  • Includes: Gasket(s)
  • Number of Cylinders: 8
  • Port Shape: Round
  • Primary Tube Diameter: 1.63 in.
  • Primary Tube Wall Thickness: 16-gauge
  • Warranty: 90-day Flowtech warranty
see more Fits the following 1965 Pontiac GTO submodels:
  • 8 Cyl 5.3L | Base
  • 8 Cyl 6.4L | Base

Flowmaster - Scavenger Series Elite Headers

FLOWMASTER  – SCAVENGER SERIES ELITE HEADERS

Flowmaster’s Scavenger Series Elite headers allow you to get rid of that archaic stock manifold that restricts airflow and allows the engine to breath better which also gives you better throttle response, horsepower and fuel efficiency. Flowmaster, known as ‘the exhaust technology company,’ is a leading manufacturer of high performance exhaust systems and respected for design, innovation and engineering.

  • Proven to improve torque, horsepower and gas mileage
  • Available in block hugger, long tube or shorty design
  • Replaces stock cast iron manifold
  • Made of coated and polished stainless steel
  • Factory collector connections and 3/8” flanges make a tight fit
  • Designed to minimize back pressure and maximize exhaust flow
  • Includes hardware
  • 1-year warranty
Flowmaster Headers, Flowmaster Scavenger Elite, 409S Stainless Steel, Silver Ceramic Coated
$749.95 List Price $970.53 Save $220.58 Availability: In Stock
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  • SKU#: F13814116
  • Product Fit: Direct Fit
  • Quantity Sold: Kit
  • Anticipated Ship Out Time: 1-2 Business Days
  • Bolts/ Studs Included: Yes
  • Collector Attachment Style: Flanged
  • Collector Diameter: 3 in.
  • Gaskets Included: Yes
  • Head Flange Thickness: 3/8 in.
  • Header Style: Full-length
  • Primary Tube Diameter: 1 3/4 In.
  • Primary Tube Thickness: 16 Gauge
  • Warranty: 3-year Flowmaster limited warranty
see more Fits the following 1965 Pontiac GTO submodels:
  • 8 Cyl 5.3L | Base
  • 8 Cyl 6.9L | Base
  • 8 Cyl 6.4L | Base

4-1 For off road/track use Hooker Competition OE replacement Headers

Hooker Competition Headers are designed for optimal performance and have the auto industry's best welds for unmatched durability. These are available with fittings to completely accommodate the air-injection manifold.

Product Features:

  • 4-1 design
  • Tuned-length primary tubes for maximum exhaust scavenging and velocity
  • 16-gauge mild steel mandrel-bent tubing for smooth exhaust flow
  • Long transition collector for decreased back pressure
  • Machined flanges for a perfect seal

Note:

  • For off road use - Not legal for use on public roads and highways
Hooker Headers, Hooker Competition, Steel, 4-1
$240.44 List Price $283.72 Save $43.28 Availability: In Stock
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  • SKU#: H264901
  • Color/Finish: Black
  • Emissions: For off road/track use
  • Product Fit: Direct Fit
  • Quantity Sold: Kit
  • Anticipated Ship Out Time: 1-2 Business Days
  • Collector Attachment Style: Flange
  • Collector Diameter: 3 in.
  • Equal Length Primary Tubes: Yes
  • Head Flange Style: Standard
  • Head Flange Thickness: 0.31 in.
  • Includes: Gasket(s)
  • Number of Cylinders: 8
  • Port Shape: SAP
  • Primary Tube Diameter: 1.63 in.
  • Primary Tube Wall Thickness: 16-gauge
  • Warranty: Hooker limited warranty
see more Fits the following 1965 Pontiac GTO submodels:
  • 8 Cyl 5.3L | Base
  • 8 Cyl 6.4L | Base