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 6655S 1 3/4" Header Long Tube Stainless Steel 67-70 Mustang 390/427/428 Cobra Jet
Surface: Stainless Steel
Tube Size: 1 3/4"
Fits Most Rack And Pinion Conversions.
Matching H-pipe Available.
Requires Jba Power Steering Ram Drop Down Bracket For Use With Factory Power Steering.
Will Not Fit Standard 390 Cylinder Head. Head Flange

JBA Performance Exhaust 6655S 1 3/4" Header Long Tube Stainless Steel 67-70 Mustang 390/427/428 Cobra Jet
Surface: Stainless Steel
Tube Size: 1 3/4"
Fits Most Rack And Pinion Conversions.
Matching H-pipe Available.
Requires Jba Power Steering Ram Drop Down Bracket For Use With Factory Power Steering.
Will Not Fit Standard 390 Cylinder Head. Head Flange

Application

1969 Ford Mustang

Charts

Installation Instructions (PDF)

Rebates

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Guides & Documents

Choosing the Right Headers

Headers Installation Instructions (4476655S)

Warranty (JBA Headers)

CARB Warning

For race/ off road use or for use on pre-1966 vehicles.

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or 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 6655S Specifications

KEY SPECS
MFG. Part #	6655S
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	694342531126

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