Flowtech Sierra 1500 1-5/8-Inch Shorty Headers; Polished 11549FLT (14-15 V8 Sierra 1500)

Name: Flowtech 1-5/8-Inch Shorty Headers; Polished (14-15 V8 Sierra 1500)
Brand: Flowtech
SKU: S536857
Price: 412.95 USD
Availability: InStock
Rating: 4.4 (23 reviews)

Product Information

Features, Description, Reviews, Q&A, Specs & Installation

Features & Specs

Mandrel-Bent 409 Stainless Steel Tubes Provide Consistent Tubing Diameters for Smooth Flow and Increased Exhaust Velocity
Heavy-Duty 16-Gauge Tubing for Increased Strength and Durability
Smooth Transition, 1-5/8-Inch Diameter Primary Tubes for Increased Exhaust Flow Enhancing Performance
OE Style 2-1/2-Inch Ball and Socket Collector Connects to Factory Exhaust Head Pipe with No Cutting or Welding
TIG-Welded, Machined 3/8-Inch Header Flange for a Leak-Free Seal and Maximum Strength
Premium Aluminum Header Gaskets Included
Available Finishes Include Natural, Polished, High Temp Black Paint, and Ceramic Coated Finishes
Popular Shorty Header for LT-Swaps
Includes Mounting Hardware and Bolts
No Air Injection Tubes
Collector Diameter Measures 3.00 Inches
Collector Port Diameter Measures 2.50 Inches
No Collector Reducer Included
Cylinder Head Flange Thickness Is 3/8 Inch
Compatible with GM Gen III/IV (LS) Engines
Main Piping Diameter Measures 1-5/8 Inches
Oval Port Shape
Sold as a Pair
Fits 2014-2015 V8 Sierra 1500

Brand

Flowtech

Headers Type

Shorty Headers

Header Primary Size

1.76-2.00 Inch

Header Collector Size

2.50 Inch

Header Finish

Polished

Description

Premium Performance Upgrade. The Flowtech 1-5/8-Inch Shorty Headers in Polished finish enhance exhaust flow and engine efficiency for 2014-2015 Silverado and Sierra 5.3L and 6.2L V8 engines. Designed to replace restrictive factory manifolds, these headers improve horsepower and torque by increasing exhaust velocity and reducing backpressure. They are ideal for enthusiasts seeking both power gains and reliability in their LT engine swaps.

Construction and Appearance. Crafted from mandrel-bent 409 stainless steel tubing with heavy-duty 16-gauge walls, these headers offer durability and consistent flow characteristics. The TIG-welded, machined 3/8-inch header flanges ensure a tight, leak-free seal. Finished in polished stainless steel, they provide a semi-gloss sheen that resists corrosion and adds a clean, professional look under the hood.

Installation. These shorty headers are designed for straightforward bolt-on installation requiring no cutting, welding, or drilling. They utilize OE-style ball and socket collectors to connect directly to the factory exhaust head pipes, reducing installation time and complexity.

Application. Specifically designed to fit 14-15 V8 Sierra 1500.

Flowtech 11549FLT

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