Description
Performance Exhaust Headers. The Flowtech 1-5/8-inch Shorty Headers Raw are engineered to improve exhaust flow, enhancing engine performance and throttle response. These headers offer a direct replacement solution optimized for demanding applications, boosting exhaust velocity without requiring any modifications to the factory exhaust system.
Construction and Appearance. Made from mandrel-bent 409 stainless steel tubing with heavy-duty 16-gauge walls, these headers provide durability and strength. They feature a natural semi-gloss finish and include a TIG-welded, machined 3/8-inch thick header flange for a secure, leak-free seal, ensuring long-lasting quality and a professional appearance.
Installation. Designed for easy installation without cutting or welding, thanks to the OE style ball and socket collector. The headers come with mounting hardware and premium aluminum header gaskets for a proper, secure fit.
Application. Specifically designed to fit the 2014-2015 Tahoe equipped with 5.3L and 6.2L LT engines, these headers offer a precise, bolt-on fit with no modifications required.
Flowtech 11547FLT
CA Residents: WARNING: Cancer and Reproductive Harm
- 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 are used for increased exhaust flow, enhancing performance and improving throttle response
- OE style 2-1/2-inch ball and socket collector connects to factory exhaust head pipe with no cutting or welding required
- 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 semi-gloss, polished, high temp black paint, and ceramic coated options
- Popular shorty style header for LT-swaps
- Bolt size M8 x 1.25 x 25mm
- Collector attachment 3-bolt flange
- Collector diameter 2.50 inches
- Collector port diameter 2.50 inches
- Design: shorty
- Emission code 4
- Engine compatibility: GM Gen III/IV LS engines
- Flange size 3/8 inch
- Flange thickness 0.375 inch
- Grade type: performance
- Header style shorty
- Main piping diameter 1-5/8 inch
- Tube material 409 stainless steel
- Mounting hardware included
- Oxygen sensor port: no
- Pipe wall gauge 16 gauge
- Port shape oval
- Sheen level semi-gloss
- Sub category exhaust manifolds
- Fits 2014-2015 Tahoe models
| Brand | Flowtech |
| Headers Type | Shorty Headers |
| Header Primary Size | 1.76-2.00 Inch |
| Header Collector Size | 2.50 Inch |
| Header Finish | Raw |






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