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Stainless Works — Stainless Works 2004 GTO Headers 1-3/4in Primaries 3in High-Flow Cats Exhaust System
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Exhaust, Mufflers & Tips

Stainless Works

Stainless Works 2004 GTO Headers 1-3/4in Primaries 3in High-Flow Cats Exhaust System

SKU: sswGTOHCAT

2004 GTO headers. All tubes are CNC mandrel bent for optimal flow. Made from 304 stainless steel for maximum corrosion resistance. Starting with a CNC cut 3/8" thick flanges into 1-3/4" diameter primaries, 3" collector. Includes 3" pipes to connect to factory 2 bolt flange. High flow catted lead pipes. The best ground clearance and fit available. Headers are fully TIG welded and back purged. These are TIG welded for...

$1,990.25$2,095.00Save 5%
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Overview

2004 GTO headers. All tubes are CNC mandrel bent for optimal flow. Made from 304 stainless steel for maximum corrosion resistance. Starting with a CNC cut 3/8" thick flanges into 1-3/4" diameter primaries, 3" collector. Includes 3" pipes to connect to factory 2 bolt flange. High flow catted lead pipes. The best ground clearance and fit available. Headers are fully TIG welded and back purged. These are TIG welded for strength and durability. These kits come with a lifetime warranty and proudly made in the USA.

Stainless Works Headers 1-3/4" With Catted Leads Factory Connect

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Fitment notes (catalog)

2004 Pontiac GTO 5.7L

Summarized compatible vehicles also appear under Description → Fitment.

Detailed rows from our confirmed fitment index can be large (dozens to hundreds per part). Load them only when you need year/trim/engine-level links to Shop by Vehicle.