Flowtech 1-5/8-Inch Shorty Headers; Polished (14-15 Yukon)

Description

High-Performance Racing Headers. The Flowtech 1-5/8-Inch Shorty Headers; Polished are designed to improve exhaust flow for enhanced performance and throttle response on 5.3L and 6.2L LT engines. They are ideal for vehicles used in racing or competition settings where street emissions compliance is not required, delivering increased horsepower and torque through superior exhaust velocity management.

Construction and Appearance. Crafted from mandrel-bent 409 stainless steel tubing with heavy-duty 16-gauge thickness, these headers ensure durability and strength. The polished finish provides a semi-gloss silver sheen that resists corrosion and adds a sleek look. A TIG-welded, machined 3/8-inch flange ensures a tight, leak-free seal, and premium aluminum gaskets are included to optimize sealing performance.

Installation. Installation is straightforward with no cutting, welding, or drilling required due to the OE-style ball and socket collector that connects directly to the factory exhaust head pipe. All necessary bolts and mounting hardware are included, making this a hassle-free upgrade.

Application. Designed specifically to fit the 2014-2015 Yukon models equipped with 5.3L or 6.2L LT engines, these headers are intended for racing use only and are not legal for use on emissions-controlled vehicles.

Flowtech 11549FLT

CA Residents: WARNING: Cancer and Reproductive Harm

• 1-5/8″ Shorty Header for 5.3/6.2L LT Engines 2WD/4WD
• 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″ Diameter Primary Tubes Used for Increased Exhaust Flow, Enhancing Performance and Throttle Response
• OE-Style 2-1/2″ Ball and Socket Collector Connects to Factory Exhaust Head Pipe with No Cutting or Welding Required
• TIG-Welded Machined 3/8″ Header Flange for 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
• Sold as a Pair
• Bolts and Mounting Hardware Included
• Collector Attachment Uses a 3-Bolt Flange
• Collector Diameter is 3.00 Inches with a Collector Port Diameter of 2.50 Inches
• Cylinder Head Flange Thickness 3/8″
• Main Piping Diameter 1-3/4 Inches
• Oval Port Shape
• No Oxygen Sensor or Exhaust Gas Temperature Ports
• Material Includes 409 Stainless Steel Tubes and 304 Stainless Steel Construction
• Category: Exhaust Headers in Exhaust Manifolds Subcategory
• Emission Code 4 for Racing Use Only Vehicles
• California Air Resources Board Non-Compliant
• Free of Catalytic Converters
• Fits 14-15 Yukon