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FlowTech Tri-Y Headers 12120FLT

FlowTech Tri-Y Headers 12120FLT
FlowTech Tri-Y Headers 12120FLTFlowTech Tri-Y Headers 12120FLTFlowTech Tri-Y Headers 12120FLTFlowTech Tri-Y Headers 12120FLTFlowTech Tri-Y Headers 12120FLTFlowTech Tri-Y Headers 12120FLT
$475.99 ea
NEWARRIVING SOONEstimated Ship Date 10/16/2023 (If Ordered Today)22 available from HOLLEY PERFORMANCE PRODUCTS as of 09/23/2023
Model: 4005981
Select a Vehicle or refer to the Vehicle Fitment Tab below to verify that this part fits your vehicle.
STANDARD
DELIVERY
Flowtech Headers are the perfect combination of quality and value. These Tri-Y style headers fit the popular 65-70 Ford 260/289/302 V8 engines.
Features:
  • Mandrel-Bent Tubes
  • Heavy Duty Tubing
  • 3/8 in. Header Flange
  • Premium Hardware Included
Holley Performance Emission Code 4: This part is legal for sale or use on Racing Use Only Vehicles. The following vehicles are considered Racing Use Only Vehicles: Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street. WARNING: It is against the law to install this part on an Emissions Controlled Vehicle
Installation Notes:
Please read the following information regarding fitment of these headers: - Attempt to install in any other application WILL require some modification - These headers will not fit vehicles utilizing an FMX, C-6, or AOD automatic transmission - May not fit some vehicles utilizing a C-4 transmission with 164-tooth bellhousing. Those using a 157-tooth bellhousing with require some clearancing on RH side of bell - Will NOT work on 351W motors. (Due to taller and wider engine dimensions) - Will not work with GT40-P cylinder heads - Headers will work with 10" or 10.5" clutch, use of a 1968-newer bellhousing will require clearance on LH side of bellhousing - 1969-1970 model vehicles may require additional clearance for steering box - Use of these headers on a non-HiPo model will require extra clearance for clutch linkage
About FlowTech

Flowtech Performance Exhaust was founded in 1994, by exhaust market expert Gary Biggs, with the mission of delivering high quality performance exhaust at a great value. The mission was successful and in less than two decades Flowtech became the leader in value priced exhaust systems.

Flowtech cornered its place in the market with aggressive and memorable product names such as Raptor™, Terminator™, Afterburner™ and Warlock™. Flowtech even revived some names from back in the day like Purple Hornies™.

Flowtech made its mark with simple yet effective improvements like slotted port flanges giving added wiggle room during header installation. They dimpled their tubes at the port to make more room for the header bolts and they parallel ground their flanges to assure a tight seal. Flowtech innovations include their unique Afterburner headers which separated the odd firing cylinders with a velocity tube to improve scavenging. Their patented Warlock bypass muffler won the SEMA best new product award for its revolutionary open or closed design in 1996.

When Flowtech became part of Holley Performance Products in 1999, the company continued to focus on value, with an emphasis on late model cars and trucks. Headers and exhaust systems were developed for Mustangs, Camaros, and all types of full size trucks - including diesels. The same innovation continues today with the addition of universal X-pipe kits and X-pipe kits with built in cut-outs. Continuous product updates and improvements to manufacturing processes will keep Flowtech the leader in value priced exhaust systems. We hope you enjoy your Flowtech product as much as we enjoy building it!

Downloads:

Download Name File Size
12119-12120flt.pdf200.74KB

Vehicle Fitment:

The Vehicle Fitment Guide is to be used as a general reference. The data has been provided by our suppliers and manufacturers and may contain errors or incorrect data. Always refer to a professional to verify correct fitment for your vehicle.
Make Model Submodel Years Engine Fitment Notes
Ford Mustang Base 1965 4.7L / 289 / V8
4.3L / 260 / V8
1.5 in. Primary Tubing; 1.75 in. Secondary Tubing; 2.5 in. Collector; Mild Steel; Polished Finish;Intended For Race Use Only
Ford Mustang Base 1966 4.7L / 289 / V8 1.5 in. Primary Tubing; 1.75 in. Secondary Tubing; 2.5 in. Collector; Mild Steel; Polished Finish;Intended For Race Use Only
Ford Mustang Base 1967 4.7L / 289 / V8 1.5 in. Primary Tubing; 1.75 in. Secondary Tubing; 2.5 in. Collector; Mild Steel; Polished Finish;Intended For Race Use Only
Ford Mustang Base 1968 4.7L / 289 / V8
5.0L / 302 / V8
1.5 in. Primary Tubing; 1.75 in. Secondary Tubing; 2.5 in. Collector; Mild Steel; Polished Finish;Intended For Race Use Only
Ford Mustang Base 1969 5.0L / 302 / V8 1.5 in. Primary Tubing; 1.75 in. Secondary Tubing; 2.5 in. Collector; Mild Steel; Polished Finish;Intended For Race Use Only
Ford Mustang Base 1970 5.0L / 302 / V8 1.5 in. Primary Tubing; 1.75 in. Secondary Tubing; 2.5 in. Collector; Mild Steel; Polished Finish;Intended For Race Use Only
Ford Mustang Grande 1970 5.0L / 302 / V8 1.5 in. Primary Tubing; 1.75 in. Secondary Tubing; 2.5 in. Collector; Mild Steel; Polished Finish;Intended For Race Use Only
Ford Mustang Mach 1 1970 5.0L / 302 / V8 1.5 in. Primary Tubing; 1.75 in. Secondary Tubing; 2.5 in. Collector; Mild Steel; Polished Finish;Intended For Race Use Only
Ford Mustang Shelby GT-350H 1966 4.7L / 289 / V8 1.5 in. Primary Tubing; 1.75 in. Secondary Tubing; 2.5 in. Collector; Mild Steel; Polished Finish;Intended For Race Use Only
Ford Mustang Shelby GT-350 1965 4.7L / 289 / V8 1.5 in. Primary Tubing; 1.75 in. Secondary Tubing; 2.5 in. Collector; Mild Steel; Polished Finish;Intended For Race Use Only
Ford Mustang Shelby GT-350 1966 4.7L / 289 / V8 1.5 in. Primary Tubing; 1.75 in. Secondary Tubing; 2.5 in. Collector; Mild Steel; Polished Finish;Intended For Race Use Only
Ford Mustang Shelby GT-350 1967 4.7L / 289 / V8 1.5 in. Primary Tubing; 1.75 in. Secondary Tubing; 2.5 in. Collector; Mild Steel; Polished Finish;Intended For Race Use Only
Ford Mustang Shelby GT-350 1968 5.0L / 302 / V8 1.5 in. Primary Tubing; 1.75 in. Secondary Tubing; 2.5 in. Collector; Mild Steel; Polished Finish;Intended For Race Use Only
Mercury Capri 1966 4.7L / 289 / V8 1.5 in. Primary Tubing; 1.75 in. Secondary Tubing; 2.5 in. Collector; Mild Steel; Polished Finish;Intended For Race Use Only
Mercury Capri 1967 4.7L / 289 / V8 1.5 in. Primary Tubing; 1.75 in. Secondary Tubing; 2.5 in. Collector; Mild Steel; Polished Finish;Intended For Race Use Only
Mercury Cougar Base 1969 5.0L / 302 / V8 1.5 in. Primary Tubing; 1.75 in. Secondary Tubing; 2.5 in. Collector; Mild Steel; Polished Finish;Intended For Race Use Only
Mercury Cougar Boss 302 1969 5.0L / 302 / V8 1.5 in. Primary Tubing; 1.75 in. Secondary Tubing; 2.5 in. Collector; Mild Steel; Polished Finish;Intended For Race Use Only
Mercury Cougar XR-7 1969 5.0L / 302 / V8 1.5 in. Primary Tubing; 1.75 in. Secondary Tubing; 2.5 in. Collector; Mild Steel; Polished Finish;Intended For Race Use Only
Mercury Cougar 1967 4.7L / 289 / V8 1.5 in. Primary Tubing; 1.75 in. Secondary Tubing; 2.5 in. Collector; Mild Steel; Polished Finish;Intended For Race Use Only
Mercury Cougar 1968 4.7L / 289 / V8
5.0L / 302 / V8
1.5 in. Primary Tubing; 1.75 in. Secondary Tubing; 2.5 in. Collector; Mild Steel; Polished Finish;Intended For Race Use Only

Specifications:

Application Automotive
Coated Finish Chrome
Collector Diameter 2.500 in.
Collector Tube Size 2.500 in.
Emission Code 4
Engine Small Block Ford
Engine Make/Size Ford Small Block
Finish Polished
Header Finish Polished
Header Style Tri-Y
Material Mild Steel
Part Type Exhaust Header
Port Shape Same As Port/Can Be Matched
Primary Tube Dia. 1-1/2 inch
Primary Tube Diameter 1.500 in.
Tube Diameter 1.750 in., 1.500 in.
Tube Direction Down Swept
WARNING CA Proposition 65 WARNING: Cancer and Reproductive Harm

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FlowTech Tri-Y Headers 12120FLT:
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