ZZP Ecotec Midlength Header & Downpipe Combo


104 reviews

This variant is currently out of stock

  • 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.


Customer Reviews
4.7 Based on 104 Reviews
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Osahon B.
United States United States
The midlength package

Luv the sound of it and the popping of the exhaust makes me want to hit the gas every time I get under a over pass

Joseph H.
Canada Canada

Very easy to install, two of the top studs did touch the header pipes so just had to use a wrench was no biggy, very great High quality parts and great service I wish the header looked like the down pipe to match

Alex M.
United States United States

I bought this set-up three months ago as part of a total exhaust system replacement. Shipping and delivery were as promised and installation was what I expected and without surprises. I am very satisfied with this purchase.

Rick W.
2006 Chevy Cobalt SS 2.4l

Overall -- decent quality, I purchased a complete header to tailpipe kit--the header paint finish below standard in my opinion and the **** for the O2 sensor in the header is in a location that the O2 sensor harness is stretched for install ---- was remedied by disconnecting and re routing harness to make up the slack---other than that, the ****** is thick and good quality as are the clamps and the rest of the system was a great fit and high quality finish. Installed it on my 2.4l before the supercharger was installed and there was a noticeable difference in "pull" from lower rpm throttle "tip ins" just from the exhaust install ---- so far very pleased.

Matthew O.
United States United States
Great quality and fitment

Ordered for my 06 SS, arrived in three days. Bolted up. I mean actually bolted up to my factory catback exhaust. Great attention to detail I had to hammer the old exhaust studs out of the factory exhaust ******. The supplied bolts fit in the existing holes did not need to use my drill. Came with everything needed bolts, gasket and extended o2 harness. Would buy again. Highly recommend.