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Exhaust› Headers, Manifolds and Components

Flowtech

Upright Headers Gm 2.8/3.1/3.4L V6 Round Port Upright Headers 1-1/2 Inch Primary 20 Inch Long 27 Inch Tall 2-1/2 Inch X 10 Inch Collector 409SS Natural Finish FlowTech

$268.95 $215.05 Save $53.90

SKU: F00M 11585FLT

In Stock
In Stock
Ships by Jun 7
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Flowtech 11585FLT is a set of upright headers designed for GM 2.8L, 3.1L, and 3.4L V6 engines with either round port or D-port exhaust ports. Constructed from heavy-duty 16-gauge 409 stainless steel, these headers feature mandrel-bent tubing for consistent diameter, promoting improved exhaust pulse flow and performance.

With primary tube diameters of 1-1/2 in. and 1-5/8 in., and a 2.50 in. collector diameter and 10 in. length, these headers offer robust construction. The flange thickness is 3/8 in.

Fitment

Fitment Guaranteed

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on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

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Specifications

BrandFlowtech
Part NumberF00M 11585FLT

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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