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13272AA040 (LH Gasket)
Top ring sealing is assisted by the use of lateral gas ports
Their expertise is your advantage on the track with this suspension
Fitted to the air intake system and used by the ECU as a primary input for fuel calculations
WRX MY22-25
Half Moon Cylinder Head Plug Air Fuel Ratio Sensor 13272AA040 (LH Gasket)Half moon camshaft plugs for rear of cylinder heads are part of the valve cover sealing. Made of hard plastic. The plastic half moons can become brittle due to a combination of heat, age, and chemical exposure. These are installed into the cylinder head using RTV sealer around the perimeter. Sold individually. Manufacturer Part No: 11051AA070 What it fits: DOHC EJ20 MY90 07 DOHC EJ25 MY96 07 EZ30 EG33
