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Description
FlowTech 11585FLT Upright HeadersThese Flowtech upright derby style headers fit the 2. 8L, 3. 1L and 3. 4L GM V6 engines with both round port or D port style exhaust ports. 1 1 2 in. and 1 5 8 in. mandrel bent primary tubes provide consistent tubing diameters for smooth flow of the exhaust pulses and increase the cylinder scavenging of the exhaust to improve engine breathing. The headers are constructed from heavy duty 16 gauge 409 stainless steel tubing for increased strength and
These Flowtech upright derby style headers fit the 2.8L, 3.1L and 3.4L GM V6 engines with both round port or D-port style exhaust ports. 1-1/2 in. and 1-5/8 in. mandrel bent primary tubes provide consistent tubing diameters for smooth flow of the exhaust pulses and increase the cylinder scavenging of the exhaust to improve engine breathing. The headers are constructed from heavy duty 16-gauge 409 stainless steel tubing for increased strength and durability. These headers use a 10 in. long, 2.5 in. collector with 20 in. long primary tubes. The 3/8 in. thick header flange provides a leak-free seal and maximizes strength.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 ★★★★★
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Product Reviews
★★★★★ 5
Monster cable
Size: 4/0AWG, Color: 3ft Black + 3ft Red
Well I now know what 4/0 or 0000 cable is. Huge but very easy to handle or bend to shape.
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Reviewed in the United States on January 13, 2026
★★★★★ 5
Used for my rv battery bank
Size: 4/0AWG, Color: 3ft Black + 3ft Red
Good quality used these for my battery bank on my rv solar setup.
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Reviewed in the United States on December 1, 2025
★★★★★ 5
Top Shelf
Size: 4/0AWG, Color: 3ft Black + 3ft Red
QUALITY !
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Reviewed in the United States on November 4, 2025
★★★★★ 5
Durable Solenoid for Starter and Trim
Number of Items: 1
Installed easily and works perfectly. Engages the trim and starter reliably every time. Solid, durable, and great value.
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Reviewed in the United States on December 9, 2025
★★★★★ 5
Works Great
Number of Items: 1
I have a 1988 mercury/mariner 75 hp motor. My motor would not go down. Purchased this solenoid to replace the old one. Fit perfect and fixed my problem
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Reviewed in the United States on October 30, 2025