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- USA
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Ships within 48 hours · Estimated delivery Jul 11 - Jul 16
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Description
Flowtech Shorty Headers - Black Painted - 11142FLTOverview: Flowtech Headers are the perfect combination of quality and value. This shorty style header is popular for "LS Engine" swap projects. They fit the popular 03 13 Chevy Silverado Tahoe Yukon V 8 6. 0L, 2WD 4WD. Features: Mandrel bent 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 3 4 diameter primary tubes are used
Overview:
Flowtech Headers are the perfect combination of quality and value. This shorty style header is popular for "LS-Engine" swap projects. They fit the popular 03-13 Chevy Silverado/Tahoe/Yukon V-8 6.0L, 2WD/4WD.
Features:
- Mandrel-bent tubes provide consistent tubing diameters for smooth flow and increased exhaust velocity
- Heavy duty 16-gauge tubing for increased strength and durability
- Smooth transition, 1-3/4” diameter primary tubes are used for increased exhaust flow increasing performance and improving throttle response
- OE style 2-1/2” collector connects to factory exhaust head pipe with no cutting or welding
- TIG-welded, machined 3/8” header flange for a leak-free seal and maximum strength
- Premium aluminum header gaskets included
- Coated in high heat resistant black paint
- Headers are a must upgrade if you are using a cold air intake, cat-back exhaust system or tuner
Application:
- 2003-2013 GMC Sierra 2500 HD
- 2003-2013 Chevrolet Silverado 1500
- 2003-2013 Chevrolet Silverado 2500 HD
- 2003-2013 GMC Sierra 1500
- 2003-2013 GMC Yukon
- 2003-2013 GMC Yukon XL 2500
- 2003-2009 GMC Yukon XL 1500
- 2007-2013 Chevrolet Silverado 3500 HD
- 2007-2013 GMC Sierra 3500 HD
- 2008-2013 Chevrolet Tahoe
- 2003-2006 GMC Sierra 3500
- 2003-2006 Chevrolet Silverado 1500 HD
- 2003-2006 Chevrolet Silverado 3500
- 2003-2006 GMC Sierra 1500 HD
- 2003-2004 Chevrolet Silverado 2500
- 2003-2004 GMC Sierra 2500
- 2007 Chevrolet Silverado 1500 Classic
- 2007 Chevrolet Silverado 2500 HD Classic
- 2007 Chevrolet Silverado 3500 Classic
- 2007 GMC Sierra 1500 Classic
- 2007 GMC Sierra 2500 HD Classic
- 2007 GMC Sierra 3500 Classic
- 2007 Chevrolet Silverado 1500 HD Classic
- 2007 GMC Sierra 1500 HD Classic
Specs:
| Brand | Flowtech |
|---|---|
| Collector Diameter | 2.50 inch |
| Emission Code | 4 |
| Header Finish | Black Paint |
| Header Style | Shorty |
| Primary Tube Dia. | 1-3/4 inch |
| Product Type | Headers |
| Tube Material | 304 Stainless Steel |
| Warning | California Proposition 65 |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 501 reviews
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Product Reviews
★★★★★ 5
You wanted an opinion
Size: 17"-17.5" Neck 32"-33" Sleeve, Color: Blue Rain Print
It worked out well
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 10, 2025
★★★★★ 5
Nice textured of shirt for wrinkle free washing
Size: 18"-18.5" Neck 34"-35" Sleeve, Color: Navy
Like the shirt, rich colors! Wash on delicate and dry on low, pull out of dryer and ready to be wore or hung in closet. Wrinkle free.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 8, 2024
★★★★★ 5
No ironing required
Perfect fit and great material! No ironing
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 30, 2023
★★★★★ 1
Wrong size on shirt’s tag and description!
Size: 16"-16.5" Neck 36"-37" Sleeve, Color: Dark Blue, Size: 16"-16.5" Neck 36"-37" Sleeve, Color: Dark Blue
We have ordered Van Heusen dress shirts in size 16.5 neck and 36”-37” sleeves for years. This shirt’s sleeves are 2-3” too short! The shirt is tagged wrong. I ordered the same size brand and shirt in a different color and you can see the difference in the sleeve’s length in the photo! Annoyed I need to return the defective item.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 6, 2025
★★★★★ 5
Excellent shirt that compares to box brand stores and fits very well.
Size: 15"-15.5" Neck 34"-35" Sleeve, Color: Light Blue
I recently lost 44 pounds and all of my dress shirts no longer fit correctly. These are an excellent replacement. I am 6'2" and now 180 lbs. These are a perfect fit and are slim where they need to be and don't bunch up on the sides, and they are super comfy.
Bottom of the shirt is long enough to keep tucked in even when bending over. Sleeve length is decent, they do slide up past my wrists when doing extreme reaches, but are right at the hand/wrist connector when in an idle pose.
They did have a weird chemical smell when I first put them on, but let them air out when you first put them on. They are also very wrinkled, so make sure you have an iron around. No status on durability, but the material is not super thin, its thick like Target shirts.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 22, 2026
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