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Discussion Starter #1 (Edited)
What's up k20a.. I have a brand new never mounted PLM 4-1 K swap header up for sale. This tri-y style header will make good power. It is a 2 piece slip fit design. I still have the original box and collector gasket too. The only reason I am selling it is because I decided to go with a boost set up rather than all motor. This header is 500 on PLM website. I will let mine go for 425 shipped firm.

Below are the specs and info on the header from PLM's website:

Private Label MFG K-Series swap header features a true 4-1 merge collector for equal exhaust flow while delivering the best peak HP gain. This two piece design delivers the best performance while still utilizing your factory OEM Catalytic converter (CAT).

*Private Label MFG recommends using our test pipes for easier installation of K-Series headers.


Brand New In Box
Made of 304 Stainless steel
One year limited warranty
Long Tri-Y header
True 2.5" collector
Machined CNC-ed manifold flange
Flange is .38" which is just about 3/8" thick
18G on the 304 S/S. Measured at .049" to .050"
Two piece design


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