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Doug's Headers D603 Full Length Header, 1-3/4 In, 65-76 Ford Truck, CC

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#447D603

Doug's Headers D603 Full Length Header, 1-3/4 In, 65-76 Ford Truck, CC

Name: Doug's Headers D603 Full Length Header, 1-3/4 In, 65-76 Ford Truck, CC
Brand: Doug's Headers
SKU: 447D603
Price: 1088.77 USD
Availability: InStock

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$1,088.77

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$1,197.65

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Product Summary

Long Tube Header Tube Type, Standard Flange Style

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Key Specs

MFG. Part #	D603
Header Tube Type	Long Tube
Flange Style	Standard
Primary Tube Diameter	1-3/4"
Material Type	Steel

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855.313.9176

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Doug's Headers D603 Details

Doug's 2/4 WD TRUCK HEADERS Long Tube Metallic Ceramic CoatedHeader development and design is complex and requires a substantial amount of time and resources to do the job right! Many manufacturers are unwilling to make the commitment and instead offer compromised headers at lower prices. Doug's will not compromise performance, quality or fit to compete with inferior designs at cheap prices. Every Doug's header is tuned with the proper tube size and length to efficiently remove all the exhaust from each cylinder, reducing pumping losses resulting in a dramatic increases in horsepower and torque. Doug's headers are carefully developed on the vehicles they are intended to fit and are re-checked numerous times during the design and manufacturing process.

3/8" thick flanges... no warping
CNC mandrel bent tubes... accurate fit & better flow
Precision formed long transition collectors and long tube design... reduces backpressure and increases higher RPM horsepower
Heavy 16 gauge tubing... longer life
Tubes are pre-polished to remove scratches and the header isfinished with a Metallic Ceramic Thermal Barrier Coating polished to a high luster appearance offering corrosion and heat resistance up to 1400 degrees

Doug's Headers D603 1 3/4" 4-Tube Full Length Header Ford Truck FE 65-76 Metallic Ceramic Coating
Ceramic Coated
Collector: 2 1/2
Port Shape: SAP
Primary Tube: 1 3/4
Does not fit Camper Special models
emissions code: legal only for off-highway use (except in California or states that have adopted California emission standards)
with A/C
with Column Shift
with Floor Shifter

Doug's Headers D603 1 3/4" 4-Tube Full Length Header Ford Truck FE 65-76 Metallic Ceramic Coating
Ceramic Coated
Collector: 2 1/2
Port Shape: SAP
Primary Tube: 1 3/4
Does not fit Camper Special models
emissions code: legal only for off-highway use (except in California or states that have adopted California emission standards)
with A/C
with Column Shift
with Floor Shifter

Application

1975-1976 Ford F-150 5.9L/360 V8
1975-1976 Ford F-150 6.4L/390 V8
1975-1976 Ford F-250 5.9L/360 V8
1975-1976 Ford F-250 6.4L/390 V8

Charts

Installation Instructions (PDF)

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Black Friday Savings Are Here! From November 1 2026 through November 30 2026, save 10% on all Aeromotive and PerTronix products, including top performance brands like Doug's Headers, Taylor Cable, and JBA Performance Exhaust. Whether you're upgrading your fuel system, ignition components, headers, spark plug wires, or exhaust setup, this limited-time offer makes it easy to get premium performance parts at a great price. No coupon required, just shop qualifying Aeromotive and PerTronix brands and enjoy instant savings all month long.

Guides & Documents

Choosing the Right Headers

Headers Installation Instructions (447D603)

CARB Warning

For use on pre-1966 vehicles only

Emissions warning: this part only legal for sale or use in California if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. ++any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering there are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

CA WARNING:

Can expose you to lead, a carcinogen and reproductive toxicant. See www.P65Warnings.ca.gov

CARB warning

Doug's Headers D603 Specifications

KEY SPECS
MFG. Part #	D603
Brand	Doug's Headers
Header Tube Type	Long Tube
Flange Style	Standard
Primary Tube Diameter	1-3/4"
Material Type	Steel
Color	Silver
Weld-Up	No
Collector Diameter	2-1/2 Inch
Finish	Ceramic Coated
Hardware Included	Yes
Gasket(s) Included	Yes

GENERAL
Sold in Quantity	Pair
GTIN Code	694342509965

Ratings & Reviews

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Fitment

1963 Ford 300

390 Ford FE V8

1962-1967 Ford Club Wagon

390 Ford FE V8

1961-1971 Ford Country Sedan

390 Ford FE V8

1961-1971 Ford Country Squire

390 Ford FE V8

1964-1971 Ford Custom

390 Ford FE V8

1964 Ford Custom 500

390 Ford FE V8

1966-1971 Ford Custom 500

390 Ford FE V8

1968-1976 Ford F-100

360 Ford FE V8
390 Ford FE V8

1975-1976 Ford F-150

360 Ford FE V8
390 Ford FE V8

1968-1976 Ford F-250

360 Ford FE V8
390 Ford FE V8

1964-1966 Ford F-350

360 Ford FE V8

1968-1976 Ford F-350

360 Ford FE V8
390 Ford FE V8

1961-1970 Ford Fairlane

390 Ford FE V8

1963 Ford Ford 300

390 Ford FE V8

1961-1967 Ford Galaxie

390 Ford FE V8

1962-1971 Ford Galaxie 500

390 Ford FE V8

1965-1971 Ford LTD

390 Ford FE V8

1967-1969 Ford Mustang

390 Ford FE V8

1961-1971 Ford Ranch Wagon

390 Ford FE V8

1967-1969 Ford Ranchero

390 Ford FE V8

1961-1968 Ford Thunderbird

390 Ford FE V8

1968-1970 Ford Torino

390 Ford FE V8

1967 Mercury Brougham

390 Ford FE V8

1966-1967 Mercury Caliente

390 Ford FE V8

1966-1967 Mercury Capri

390 Ford FE V8

1961-1971 Mercury Colony Park

390 Ford FE V8

1966-1969 Mercury Comet

390 Ford FE V8

1961-1968 Mercury Commuter

390 Ford FE V8

1967-1970 Mercury Cougar

390 Ford FE V8

1963 Mercury Country Cruiser

390 Ford FE V8

1966-1970 Mercury Cyclone

390 Ford FE V8

1963-1970 Mercury Marauder

390 Ford FE V8

1967-1970 Mercury Marquis

390 Ford FE V8

1961-1963 Mercury Meteor

390 Ford FE V8

1964-1968 Mercury Montclair

390 Ford FE V8

1968-1969 Mercury Montego

390 Ford FE V8

1961-1970 Mercury Monterey

390 Ford FE V8

1964-1968 Mercury Park Lane

390 Ford FE V8

1966-1967 Mercury Villager

390 Ford FE V8

1966-1967 Mercury Voyager

390 Ford FE V8