JBA long tube headers are the number one choice for maximum performance gains and high RPM efficiency. These long tube designs are dyno and race proven to deliver the greatest possible increase in horsepower and torque throughout the RPM range. All JBA long tube headers feature large mandrel-bent stainless steel primary tubes, oversized exhaust ports, extra thick 3/8" one piece flanges, and patented JBA Firecone* merged collectors for smooth flow. Each system is designed to give the maximum amount of ground clearance possible so lowered cars do not drag the collectors. Each system includes high quality hardware and thorough instructions for a professional no-leak installation. *Standard on 4-1 long tube V8 applications. Not available on Tri-Y headers.

3/8" thick CNC laser-cut flanges
Patented JBA Firecone collector
O2 sensor provisionscollector
Large diameter mandrel-bent steel tubes
Oversized exhaust ports

JBA Performance Exhaust 6610S 1 3/4" Header Long Tube Stainless Steel 65-70 Mustang 302
Surface: Stainless Steel
Tube Size: 1 3/4"
E-brake Pivot Bracket Must Be Relocated.
Fits Most Z-bars. Vehicles May Require Z-bar Modification Or New Jba Z Bar P/n 1650z For Proper Fit.
For Off-road Use Only. This Product Is Not Emissions Legal.
Mat
Matching H-pipe Available.
Requires Jba Powe
For Off-Road Use Only

JBA Performance Exhaust 6610S 1 3/4" Header Long Tube Stainless Steel 65-70 Mustang 302
Surface: Stainless Steel
Tube Size: 1 3/4"
E-brake Pivot Bracket Must Be Relocated.
Fits Most Z-bars. Vehicles May Require Z-bar Modification Or New Jba Z Bar P/n 1650z For Proper Fit.
For Off-road Use Only. This Product Is Not Emissions Legal.
Mat
Matching H-pipe Available.
Requires Jba Powe
For Off-Road Use Only

Application

1965-1967 Ford Mustang 4.7L/289 V8
1968-1973 Ford Mustang 5L/302 V8

Charts

Installation Instructions (PDF)

Rebates

Aeromotive & PerTronix Black Friday 10% Off Sale

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 (4476610S)

Warranty (JBA Headers)

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

JBA Headers 6610S Specifications

KEY SPECS
MFG. Part #	6610S
Brand	JBA Headers
Header Tube Type	Long Tube
Flange Style	Standard
Primary Tube Diameter	1-3/4"
Material Type	Stainless Steel
Color	Natural
Weld-Up	No
Collector Diameter	3 Inch
Finish	Raw
Hardware Included	Yes
Gasket(s) Included	Yes

GENERAL
Sold in Quantity	Pair
GTIN Code	694342530792

Ratings & Reviews

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Questions & Answers

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Fitment

1964 AC Shelby Cobra

Ford 289

1968-1973 AC Shelby Cobra

Ford 289

1967 DeTomaso Mangusta

Ford 289

1963 Ford 300

Ford 289

1966-1968 Ford Bronco

Ford 289

1963-1967 Ford Club Wagon

Ford 289

1963-1968 Ford Country Sedan

Ford 289

1963-1968 Ford Country Squire

Ford 289

1964-1968 Ford Custom

Ford 289

1964-1968 Ford Custom 500

Ford 289

1963-1968 Ford Fairlane

Ford 289

1964-1968 Ford Falcon

Ford 289

1964-1965 Ford Falcon Sedan Delivery

Ford 289

1963 Ford Ford 300

Ford 289

1963-1967 Ford Galaxie

Ford 289

1963-1967 Ford Galaxie 500

Ford 289

1964-1969 Ford GT40

Ford 289

1965-1968 Ford LTD

Ford 289

1964-1968 Ford Mustang

Ford 289

1963-1968 Ford Ranch Wagon

Ford 289

1960-1961 Ford Ranchero

Ford 289

1965-1968 Ford Ranchero

Ford 289

1964 Ford Sprint

Ford 289

1968 Ford Torino

Ford 289

1964-1967 Mercury Caliente

Ford 289

1966-1967 Mercury Capri

Ford 289

1964-1968 Mercury Comet

Ford 289

1967 Mercury Commuter

Ford 289

1967-1968 Mercury Cougar

Ford 289

1963 Mercury Country Cruiser

Ford 289

1964-1968 Mercury Cyclone

Ford 289

1963 Mercury Meteor

Ford 289

1968 Mercury Montego

Ford 289

1964-1967 Mercury Villager

Ford 289

1966-1967 Mercury Voyager

Ford 289

1963-1968 Shelby Cobra

Ford 289