aFe Twisted Steel Header SS-409 HDR Jeep Wrangler YJ 91-99 I6-4.0LThe new Twisted Steel performance header from aFe Power is redefining the header industry with new pulse control technology. aFe engineers have designed this header using optimum tube lengths and mitered collectors for maximum flow and velocity for power delivery across the entire power band. Combine with a large 1 2" thick head flange and 14 gauge 409 stainless steel tubing, you have a header that is strong and powerful. Twisted Steel headers are 100

So when we had to choose between (a) cooler air at all speeds with a limited air source

the Density Line Rubber features enhanced bonding to the cast aluminum mount body - reducing the likelihood of separation and dreaded "clunk" associated with the factory mounts

Precision engineered tie-downs constructed from high-strength Domex steel with a red powder coated finish

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CSF's ever expanding A/C condenser product line includes hundreds of condenser models made to the same high standards of their premier radiator line

Improved acceleration and torque

Finishing off this exhaust system is a 4-1/2" diameter black 304 stainless steel exhaust tip

INSTALL INFO - These bolts do not use the factory tool

the optional RKP splitter can be attached directly to the front lip

With over 40% more volume and equalized air flow

This intercooler has been sized to give you the most intake air cooling for your high performance turbo BMW

and other aftermarket kits