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Flowtech

Flowtech Headers 12000FLT Headers, Block Hugger, Painted, Small Block, Ford, 289-351W, Universal Street Rod, 1.625 in.x 2.500 in., Pair

SKU: BIG12000FLT

Headers
Flowtech Headers 12000FLT Headers, Block Hugger, Painted, Small Block, Ford, 289-351W, Universal Street Rod, 1.625 in.x 2.500 in., Pair

Flowtech

Flowtech Headers 12000FLT Headers, Block Hugger, Painted, Small Block, Ford, 289-351W, Universal Street Rod, 1.625 in.x 2.500 in., Pair

SKU: BIG12000FLT

Headers

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A$583.43
Special Order. Contact for ETA. This item is out of stock in our warehouse and partner distribution centres. In some cases, this may be due to not having live inventory feeds available for all suppliers. Please contact us before ordering if you need to meet a specific deadline.
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Description

Flowtech headers are designed to provide optimum exhaust flow for increased horsepower, torque, fuel economy, and improved throttle response. Leak-tested for maximum performance, they feature the industry's best welds for durability and are carefully engineered for precise fit. Available for a wide range of applications, they're offered in block hugger, competition, fenderwell, lakester, long tube, mid-length, shorty, upright, and turbo styles. Varying with the application, Flowtech headers are constructed from sturdy and lightweight cold-rolled mild steel or stainless steel for increased strength and durability. All tubing is mandrel-bent to provide consistent tubing diameter for smooth flow and increased exhaust velocity. Extra-thick, machined header flanges provide a leak-free seal and maximum strength. For long-term rust and corrosion-resistance, available finishes include natural and polished stainless steel, high heat-resistant black paint, or a satin silver metallic ceramic thermal barrier coating. All mounting hardware and premium gaskets are included.

Important 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. Hooker recommends using cast iron exhaust manifolds or old headers to break in new engines to avoid coating damage. Flowtech does not recommend the use of header wraps as this will void the warranty.

Part Type

SBF Block Hugger Headers

Data: v4.2 - Upd: 2026-09-29 13:08:07

Specifications

Product Attributes - Brand
Flowtech
Product Attributes - Manufacturer's Part Number
12000FLT
Product Attributes - Part Type
Headers
Product Attributes - Product Line
Flowtech Headers
Product Attributes - UPC
787480120007
Product Attributes - Header Style
Block hugger
Product Attributes - Header Material
Steel
Product Attributes - Primary Tube Outside Diameter (in.)
1 5/8 in.
Product Attributes - Header Color
Temporary non-high temperature paint
Product Attributes - Flange Style
Standard
Product Attributes - Weld-Up
No
Product Attributes - Cylinder Head Port Shape
Oval
Product Attributes - Collector Attachment
3-bolt flange
Product Attributes - Collector Diameter (in.)
2.50
Product Attributes - Collector Reducers Included
Yes
Product Attributes - Collector Reducer Exit Diameter
2.000 in.
Product Attributes - Tuned
No
Product Attributes - Primary Tube Gauge
16-gauge
Product Attributes - Spark Plug Position
Angle/Straight
Product Attributes - Flange Thickness (in.)
0.31 in.
Product Attributes - Bolts/Studs Included
Yes
Product Attributes - Gaskets Included
Yes
Product Attributes - Crossover Pipe Included
No
Product Attributes - Catalytic Converter(s) Included
No
Product Attributes - Motor Mounts Included
No
Product Attributes - Transmission Mount Included
No
Product Attributes - Quantity
Sold as a pair.
Product Attributes - Notes
The paint applied to these headers is a temporary coating only and is designed to burn off during use. High temperature paint or other high temperature coatings are recommended.

Reference Information

Brand Name/s Flowtech
StreetFX SKU big12000FLT
SFX Item ID 5092174
Supplier Item Code 5092174
Manufacturer SKU 12000FLT
Manufacturer UPC 787480120007
Alternative References FLT12000, 289-351W

Compatibility

Application Data
  • MakeFORD
    ModelSTREET ROD
    Beginning Year1923
    Ending Year1949
    Engine TypeV8
    Engine FamilyFord small block Windsor
    Engine Size5.0L/302
    DrivetrainRWD
    Power SteeringNo
    Power Brakes (application)No
    Air ConditioningNo
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftNo
    Automatic Transmission Column ShiftNo
    Automatic Transmission Floor ShiftNo
  • MakeFORD
    ModelSTREET ROD
    Beginning Year1927
    Ending Year1927
    Engine TypeV8
    Engine FamilyFord small block Windsor
    Engine Size4.7L/289
    DrivetrainRWD
    Power SteeringNo
    Power Brakes (application)No
    Air ConditioningNo
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftNo
    Automatic Transmission Column ShiftNo
    Automatic Transmission Floor ShiftNo
  • MakeFORD
    ModelSTREET ROD
    Beginning Year1927
    Ending Year1927
    Engine TypeV8
    Engine FamilyFord small block Windsor
    Engine Size5.8L/351
    DrivetrainRWD
    Power SteeringNo
    Power Brakes (application)No
    Air ConditioningNo
    Standard Transmission Column ShiftNo
    Standard Transmission Floor ShiftNo
    Automatic Transmission Column ShiftNo
    Automatic Transmission Floor ShiftNo

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