IN-STOCK READY TO SHIP!ITG Megaflow Racing Engine Air Filter - Foam Bonded Type - Ideal For Porsche PMO ITB / Carbs - 3 Clip Style ITG Air FiltersMeasurements: Inside Clearance: 40mmREQUIRES: Base Plates & Base Plate Clips (All Sold Separate) ITG Filters - Sold Each - 2 Per Car MANUFACTURER'S NOTE: The two outer layers of foam provide optimum filtration and load-up capacity whilst the inner layer is made from special self-extinguishing foam. These two layers combined give the very best air flow, engine protection and safety. ITG recommend fitting the tallest element possible, though a gap of 1/2" (13mm) average must be left over the top of the filter for air to circulate. When using Ram pipes, there must be an absolute minimum gap of 3/4" (19mm), but preferably around 1-1/4" (32mm) between the end of the ram pipe and the underside of the top of the filter. Alternate Part Numbers: FIL ITG JC40 80 / JC40-80 / JC40.80 / JC4080 / ITG AIR FILTERS 01/20/2026