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FlowTech Long Tube Header, Black Paint 12100FLT

FlowTech Long Tube Header, Black Paint 12100FLT
FlowTech Long Tube Header, Black Paint 12100FLTFlowTech Long Tube Header, Black Paint 12100FLTFlowTech Long Tube Header, Black Paint 12100FLTFlowTech Long Tube Header, Black Paint 12100FLT
$411.99 ea
NEWARRIVING SOONEstimated Ship Date 03/13/2025 (If Ordered Today)24 Available from HOLLEY PERFORMANCE PRODUCTS as of 02/22/2025
Model: 4005965
Select a Vehicle or refer to the Vehicle Fitment Tab below to verify that this part fits your vehicle.
OVERSIZE 1
STORE PICKUP
[More Info]
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:
  • Increased Exhaust Scavenging for Improved Performance
  • Leak Test For Max Performance
  • Mandrel-Formed Power Plenum
  • Leakproof O-Ringed Port Seals
  • Include All Mounting Hardware
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.
Not compatible with manual transmission or C6 transmission
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.
Not compatible with manual transmission or C6 transmission

Downloads:

Download Name File Size
12100-3901flt.pdf158.01KB

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 1969 5.8L / 351 / V8
Ford Mustang Base 1970 5.8L / 351 / V8
Ford Mustang Base 1971 5.0L / 302 / V8
5.8L / 351 / V8
Ford Mustang Base 1972 5.0L / 302 / V8
5.8L / 351 / V8
Ford Mustang Base 1973 5.0L / 302 / V8
5.8L / 351 / V8
Ford Mustang Boss 302 1971 5.0L / 302 / V8
Ford Mustang Boss 351 1971 5.8L / 351 / V8
Ford Mustang Boss 351 1972 5.8L / 351 / V8
Ford Mustang Grande 1970 5.8L / 351 / V8
Ford Mustang Grande 1971 5.0L / 302 / V8
5.8L / 351 / V8
Ford Mustang Grande 1972 5.0L / 302 / V8
5.8L / 351 / V8
Ford Mustang Grande 1973 5.0L / 302 / V8
5.8L / 351 / V8
Ford Mustang Shelby GT-350 1969 5.8L / 351 / V8
Ford Mustang Shelby GT-350 1970 5.8L / 351 / V8
Ford Mustang 1969 5.8L / 351 / V8 Standard Header; Primary Tube Coll. Size 1.5x3 in.; Can Be Modified To Fit A.I.R. Fittings In Head; Will Not Fit C5 Trans.; Not Legal For Street Use;
Ford Mustang 1970 5.8L / 351 / V8 Standard Header; Primary Tube Coll. Size 1.5x3 in.; Can Be Modified To Fit A.I.R. Fittings In Head; Will Not Fit C5 Trans.; Not Legal For Street Use;
Ford Mustang 1971 5.0L / 302 / V8 Standard Header; Primary Tube Coll. Size 1.5x3 in.; Can Be Modified To Fit A.I.R. Fittings In Head; Will Not Fit C5 Trans.; Not Legal For Street Use;
Ford Mustang 1972 5.0L / 302 / V8 Standard Header; Primary Tube Coll. Size 1.5x3 in.; Can Be Modified To Fit A.I.R. Fittings In Head; Will Not Fit C5 Trans.; Not Legal For Street Use;
Ford Mustang 1973 5.0L / 302 / V8 Standard Header; Primary Tube Coll. Size 1.5x3 in.; Can Be Modified To Fit A.I.R. Fittings In Head; Will Not Fit C5 Trans.; Not Legal For Street Use;
Mercury Cougar Base 1969 5.8L / 351 / V8
Mercury Cougar Base 1970 5.8L / 351 / V8
Mercury Cougar Base 1971 5.8L / 351 / V8
Mercury Cougar Base 1972 5.8L / 351 / V8
Mercury Cougar Base 1973 5.8L / 351 / V8
Mercury Cougar XR-7 1969 5.8L / 351 / V8
Mercury Cougar XR-7 1970 5.8L / 351 / V8
Mercury Cougar XR-7 1971 5.8L / 351 / V8
Mercury Cougar XR-7 1972 5.8L / 351 / V8
Mercury Cougar XR-7 1973 5.8L / 351 / V8
Mercury Cougar 1969 5.8L / 351 / V8 Standard Header; Primary Tube Coll. Size 1.5x3 in.; Can Be Modified To Fit A.I.R. Fittings In Head; Will Not Fit C5 Trans.; Not Legal For Street Use;
Mercury Cougar 1970 5.8L / 351 / V8 Standard Header; Primary Tube Coll. Size 1.5x3 in.; Can Be Modified To Fit A.I.R. Fittings In Head; Will Not Fit C5 Trans.; Not Legal For Street Use;

Specifications:

Bolt Size 3/8-16 x 3/4, 3/8-16 x 3/4
CARB (California) Compliant No
Collector Diameter 3.00 inch
Emission Code 4
Engine Small Block Ford
Header Finish Black Paint
Header Style Long Tube
Part Type Exhaust Header
Primary Tube Dia. 1-1/2 inch
Product Type Headers
Proposition 65 www.P65Warnings.ca.gov
Tube Material Mild Steel

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