Milltek Sport Downpipes - 2000-2004 VW GTI Mk4 1.8T

These Milltek Sport parts fit the 2000-2004 Volkswagen GTI 1.8T (Mk4) with the 1.8 liter turbo four. These large-bore Milltek downpipes replace the restrictive factory downpipe on the transverse 1.8T engine, in versions for the Milltek cat-back or the factory cat-back. A Milltek hot-side part replaces the restrictive factory section with larger, smoother T304L tubing, so exhaust gas leaves the engine with less resistance. Pick a catted version to keep a catalytic converter in the system, or a catless version for a dedicated track car. Each option below says whether it joins the factory cat-back or a Milltek cat-back. Every VW GTI Mk4 1.8T system is made from T304L stainless steel with mandrel-bent tubing, so the pipe keeps its full size through each bend and resists corrosion for years. They bolt in place of the factory parts with no cutting or welding.

How to Choose

Choose the Part you need. Catless Downpipe (Milltek Cat-Back) has no catalytic converter. It is for off-road and track use only and needs an ECU remap, and it connects to a Milltek cat-back. Catless Downpipe (Factory Cat-Back) has no catalytic converter. It is for off-road and track use only and needs an ECU remap, and it connects to the factory cat-back. Catted Hi-Flow Sports Cat Downpipe (Milltek Cat-Back) keeps a high-flow sports catalytic converter. Milltek recommends an ECU remap with it, and it connects to a Milltek cat-back. Catted Hi-Flow Sports Cat Downpipe (Factory Cat-Back) keeps a high-flow sports catalytic converter. Milltek recommends an ECU remap with it, and it connects to the factory cat-back.

Pair them with the Milltek cat-back for the VW GTI Mk4 1.8T for a complete Milltek exhaust.

Features

• 76.2 mm (3 in) T304L stainless steel pipework
• Mandrel-bent and made to bolt to the factory mounting points
• Catted and catless options explained in How to Choose

What's Included

• The Milltek parts shown for the version you choose

Specifications

Fitment Notes

• Fits the 2000-2004 US-market GTI 1.8T (Mk4). Milltek lists the same downpipes for the 2000-2005 Jetta 1.8T, which has its own page.
• All four are race products and need a Stage 2 ECU remap.
• Catless parts remove the catalytic converter. They are sold for off-road and competition use only and are not legal on public roads in the US.

Questions about fitment? Call (310) 231-0292 or text (310) 886-3111.