HKS Air Fuel Knock Amp AFK Wideband Controller New Arrivals you've noticed a curved "bellmouth"

you've noticed a curved "bellmouth" profile at the inlet of each intake runner

so no prep work is needed

Paint will age naturally

Factory gaskets fail under heat and vibration—this one seals the joint between your header and cylinder head to restore back-pressure and stop that telltale hiss

What fittings do I need to connect this

HKS Air Fuel Knock Amp AFK Wideband Controller New Arrivals you've noticed a curved "bellmouth"HKS 44006 AK003 Air Fuel Knock Amp AFK Wideband Controller Redesigned for 2008, the all new generation of the A F Knock Amp, known as the AFK, now includes a new HKS AF sensor where the air fuel ratio can be monitored accurately on the display. The AFK can now monitor and display dual A F readings with the purchase of an additional AF sensor. The redesign of the new AFK features a sleek black case with a clear acrylic faceplate and a positive lit LCD