Exhaust Headers, Manifolds and Components

Stainless Works

Stainless Power 15-17 Mustang GT Headers 1-7/8in Primaries High-Flow Cats

$1,418.78

SKU: S00K SM15H3CAT

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In Stock
Ships by Aug 1
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

Part #: SM15H3CAT

2015-16 Mustang GT headers with 1-7/8" primary tubes, 3" diameter lead pipes and high flow catalytic converters designed to mate to Stainless Works exhaust. Tig welded 304 stainless steel headers with 3/8" thick flanges and 3" diameter slip fit collectors with merge spikes. This system is designed to work with Stainless Works performance connect exhausts, which maintain a full 3" diameter, and does not neck-down like the factory system. Stainless Power headers are backed by a 24-Month guarantee on material and workmanship.

2015-16 Mustang GT headers with 1-7/8" primary tubes, 3" diameter catted lead pipes, Tig welded 304 stainless steel headers with 3/8" thick flanges. Designed to work with SW performance connect exhausts, which maintain a full 3" diameter.

MIA's Description

The Stainless Works SM15H3CAT are long tube headers with high-flow catalytic converters for 2015-2023 Ford Mustang GT 5.0L models, constructed from 304 stainless steel with 1-7/8" primary tubes and 3" collector outlets.

Fitment

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Specifications

BrandStainless Works
Part NumberS00K SM15H3CAT

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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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