aFe Twisted Steel Header SS-409 HDR Jeep Wrangler YJ 91-99 I6-4.0L Engine Components>Throttle Bodies ACT twin disc kits include

ACT twin disc kits include a pressure plate

Flow and Performance: aFe Power's cold side tube is constructed from 3-1/2" and 3" mandrel-bent aluminum tubing for maximum flow then

000 miles before cleaning is needed (depending on driving conditions)

(p/n 450-502001-B) Both the stem and bolt threads are pre-coated with Vibra-tite threadlocker

have been tortue tested to 1 million cycles on our hydraulic test rig

aFe Twisted Steel Header SS-409 HDR Jeep Wrangler YJ 91-99 I6-4.0L Engine Components>Throttle Bodies ACT twin disc kits includeThe 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