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ZZP Ecotec Midlength Header & Downpipe Combo

  • 14 inch average primary length
  • Near equal length primaries
  • 3/8 inch flanges prevent warping and leakage
  • 1.5" primaries maximize NA setups
  • Larger 1.75" primaries maximize supercharged setups
  • O2 extension harness included
  • Grade 9 downpipe bolts included
  • Stainless steel downpipe

This is our most affordable header and downpipe package. It installs in under 2 hours. Freeing up the flow of your exhaust allows you to run smaller pulleys safely. Look for gains between 10 and 25 horsepower, depending on your mod level. The downpipe has a 2.5" exit so it connects to a stock or 2.5" aftermarket catback. This header/downpipe setup must remain as a combo and is not compatible with the OEM manifold and/or downpipe.

How to order your header/downpipe package:

Transmission: Automatic or Manual transmission. This determines the length of the downpipe.

Primary Size: 1.5" is recommended for NA applications (no boost). 1.75" is recommended for boosted applications. The 1.5" primary will have more torque than the higher flowing 1.75" header, it will also work great in boosted applications.

Extra O2 bung: Each downpipe comes with a bung for your rear o2 sensor, however If you would like a second o2 bung for a wideband o2 sensor gauge, then select the "Extra O2 bung for aftermarket wideband gauge" option.

 Our downpipes come with a high flow catalytic converter that is 48 state legal. Our catalytic converters will not pass California or New York state emissions. Please contact if you have any questions.

Customer Reviews
4.7 Based on 118 Reviews
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Joe F.
United States United States
Header and downpipe

Bolted right up with no issues.

United States United States
Not bad

I had purchased a while back noticed the options have changed so I think that's why mine was dif cuz I was able to purchased cat less and it was great (loud lol :p) but it really didn't last as long as I had hoped but all in all still was really good while it lasted I ended up upgrading to the longtube header well worth the extra cost to me now sound included lol

mat m.
United States United States
zzp header

very pleased. the quality and fitment is great.

Justin B.
United States United States
Haven’t installed yet but looks good!

What you see in the photo is exactly what you get. I was a little surprised it didn’t come with an exhaust manifold gasket but a run to Auto Zone easily solved that. Eager to install once I’m done rebuilding the engine!

Matthew A.
Canada Canada
Header and dowwnpipe for supercharged ss

Sounds great and makes the exhaust flow way smoother finds a little difference in power but very happy with product