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FlowTech Long Tube Headers 12118FLT

FlowTech Long Tube Headers 12118FLT
FlowTech Long Tube Headers 12118FLTFlowTech Long Tube Headers 12118FLTFlowTech Long Tube Headers 12118FLTFlowTech Long Tube Headers 12118FLT
$418.99 ea
NEWARRIVING SOONEstimated Ship Date 10/17/2023 (If Ordered Today)80 available from HOLLEY PERFORMANCE PRODUCTS as of 09/25/2023
Model: 4005979
Select a Vehicle or refer to the Vehicle Fitment Tab below to verify that this part fits your vehicle.
OVERSIZE 1
Flowtech headers are the perfect combination of performance and value. Flowtech long tube headers are precision engineered using mandrel bent tubing, formed collectors and 5/16" flanges with sealing rings for a leak-free seal. All mounting hardware and gaskets are included for a simple installation. This header is coated in a high heat resistant black paint for a stealthy appearance.
Features:
  • Fuel Economy From The Engine
  • Leak Test For Max Performance
  • Mandrel-Formed Power Plenum
  • Leak-proof O-Ringed Port Seals
  • Include All Mounting Hardware
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:
Breaking in an engine with ceramic coated headers WILL result in damage to the coating and will VOID all warranties. Ceramic coated headers require several heat cycles to fully cure before they will withstand extreme heat. Flowtech recommends using cast iron exhaust manifolds or old headers to break in new engines to avoid coating damage. Please call Flowtech tech service at 270-781-9741 for additional information regarding ceramic coated exhaust products. The use of header wraps can cause the header tubes to crack or rust due to excessive heat and moisture build-up. Flowtech does not recommend the use of header wraps as this will void the warranty.
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
12118-3901fltrev2.pdf165.33KB

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 1970 5.8L / 351 / V8 1.75 in. Primary Tubing; 3 in. Collector Size; Mild Steel; Black Painted Finish; Gaskets; Hardware;Intended For Race Use Only
Power Steering Equipped; Use Power Steering Pump Bracket PN[10041FLT]
Ford Mustang Base 1971 5.8L / 351 / V8 1.75 in. Primary Tubing; 3 in. Collector Size; Mild Steel; Black Painted Finish; Gaskets; Hardware;Intended For Race Use Only
Power Steering Equipped; Use Power Steering Pump Bracket PN[10041FLT]
Ford Mustang Base 1972 5.8L / 351 / V8 1.75 in. Primary Tubing; 3 in. Collector Size; Mild Steel; Black Painted Finish; Gaskets; Hardware;Intended For Race Use Only
Power Steering Equipped; Use Power Steering Pump Bracket PN[10041FLT]
Ford Mustang Boss 351 1971 5.8L / 351 / V8 1.75 in. Primary Tubing; 3 in. Collector Size; Mild Steel; Black Painted Finish; Gaskets; Hardware;Intended For Race Use Only
Ford Mustang Grande 1970 5.8L / 351 / V8 1.75 in. Primary Tubing; 3 in. Collector Size; Mild Steel; Black Painted Finish; Gaskets; Hardware;Intended For Race Use Only
Power Steering Equipped; Use Power Steering Pump Bracket PN[10041FLT]
Ford Mustang Grande 1971 5.8L / 351 / V8 1.75 in. Primary Tubing; 3 in. Collector Size; Mild Steel; Black Painted Finish; Gaskets; Hardware;Intended For Race Use Only
Power Steering Equipped; Use Power Steering Pump Bracket PN[10041FLT]
Ford Mustang Grande 1972 5.8L / 351 / V8 1.75 in. Primary Tubing; 3 in. Collector Size; Mild Steel; Black Painted Finish; Gaskets; Hardware;Intended For Race Use Only
Power Steering Equipped; Use Power Steering Pump Bracket PN[10041FLT]
Ford Mustang Mach 1 1970 5.8L / 351 / V8 1.75 in. Primary Tubing; 3 in. Collector Size; Mild Steel; Black Painted Finish; Gaskets; Hardware;Intended For Race Use Only
Power Steering Equipped; Use Power Steering Pump Bracket PN[10041FLT]
Ford Mustang Mach 1 1971 5.8L / 351 / V8 1.75 in. Primary Tubing; 3 in. Collector Size; Mild Steel; Black Painted Finish; Gaskets; Hardware;Intended For Race Use Only
Power Steering Equipped; Use Power Steering Pump Bracket PN[10041FLT]
Ford Mustang Mach 1 1972 5.8L / 351 / V8 1.75 in. Primary Tubing; 3 in. Collector Size; Mild Steel; Black Painted Finish; Gaskets; Hardware;Intended For Race Use Only
Power Steering Equipped; Use Power Steering Pump Bracket PN[10041FLT]
Ford Mustang 1973 5.8L / 351 / V8 1.75 in. Primary Tubing; 3 in. Collector Size; Mild Steel; Black Painted Finish; Gaskets; Hardware;Intended For Race Use Only
Power Steering Equipped; Use Power Steering Pump Bracket PN[10041FLT]
Mercury Cougar Base 1970 5.8L / 351 / V8 1.75 in. Primary Tubing; 3 in. Collector Size; Mild Steel; Black Painted Finish; Gaskets; Hardware;Intended For Race Use Only
Power Steering Equipped; Use Power Steering Pump Bracket PN[10041FLT]
Mercury Cougar XR-7 1970 5.8L / 351 / V8 1.75 in. Primary Tubing; 3 in. Collector Size; Mild Steel; Black Painted Finish; Gaskets; Hardware;Intended For Race Use Only
Power Steering Equipped; Use Power Steering Pump Bracket PN[10041FLT]
Mercury Cougar 1971 5.8L / 351 / V8 1.75 in. Primary Tubing; 3 in. Collector Size; Mild Steel; Black Painted Finish; Gaskets; Hardware;Intended For Race Use Only
Power Steering Equipped; Use Power Steering Pump Bracket PN[10041FLT]
Mercury Cougar 1972 5.8L / 351 / V8 1.75 in. Primary Tubing; 3 in. Collector Size; Mild Steel; Black Painted Finish; Gaskets; Hardware;Intended For Race Use Only
Power Steering Equipped; Use Power Steering Pump Bracket PN[10041FLT]
Mercury Cougar 1973 5.8L / 351 / V8 1.75 in. Primary Tubing; 3 in. Collector Size; Mild Steel; Black Painted Finish; Gaskets; Hardware;Intended For Race Use Only
Power Steering Equipped; Use Power Steering Pump Bracket PN[10041FLT]
Mercury Cougar 1974 5.8L / 351 / V8 1.75 in. Primary Tubing; 3 in. Collector Size; Mild Steel; Black Painted Finish; Gaskets; Hardware;Intended For Race Use Only
Power Steering Equipped; Use Power Steering Pump Bracket PN[10041FLT]

Specifications:

Application Automotive
Coated Finish Painted
Collector Diameter 3.000 in.
Collector Tube Size 3.000 in.
Emission Code 4
Engine Small Block Ford
Engine Make/Size Ford 351M-400
Finish Black Paint
Header Finish Black Paint
Header Style Long Tube
Material Mild Steel
Part Type Exhaust Header
Port Shape Round
Primary Tube Dia. 1-3/4 inch
Primary Tube Diameter 1.750 in.
Tube Diameter 1.750 in.
Tube Direction Down Swept
Tube Material Mild Steel
WARNING CA Proposition 65 WARNING: Cancer and Reproductive Harm

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FlowTech Long Tube Headers 12118FLT:
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