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Flowtech

Flowtech Headers 91843FLT Headers, Shorty, Steel, Painted, Chevy, GMC, Pickup, 4.8, 5.3L, Pair

SKU: BIG91843FLT

Headers
Flowtech Headers 91843FLT Headers, Shorty, Steel, Painted, Chevy, GMC, Pickup, 4.8, 5.3L, Pair

Flowtech

Flowtech Headers 91843FLT Headers, Shorty, Steel, Painted, Chevy, GMC, Pickup, 4.8, 5.3L, Pair

SKU: BIG91843FLT

Headers

Sale ends in Calculating...

A$1,242.76 A$1,344.94
IN STOCK! Est Ship 4-7 days. This item is IN STOCK at one of our warehouses or distribution centres, the ETA is the approximate time required to prepare your order for dispatch.
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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

Headers GM LS V8 Trucks 02-13 Shorty Style

Data: v4.2 - Upd: 2026-09-29 13:12:57

Specifications

Product Attributes - Brand
Flowtech
Product Attributes - Manufacturer's Part Number
91843FLT
Product Attributes - Part Type
Headers
Product Attributes - Product Line
Flowtech Headers
Product Attributes - UPC
090127688724
Product Attributes - Header Style
Shorty
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 - Collector Attachment
Stock flange
Product Attributes - Collector Diameter (in.)
2.50
Product Attributes - Collector Reducers Included
No
Product Attributes - Tuned
No
Product Attributes - Primary Tube Gauge
16-gauge
Product Attributes - Flange Thickness (in.)
0.38 in.
Product Attributes - Bolts/Studs Included
No
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.
Product Attributes - CARB EO Number(s)
D-115-20
Product Attributes - Emissions
California EO Approved

Reference Information

Brand Name/s Flowtech
StreetFX SKU big91843FLT
SFX Item ID 5092093
Supplier Item Code 5092093
Manufacturer SKU 91843FLT
Manufacturer UPC 90127688724
Alternative References FLT91843, 5.3L

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