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Home >> Mercedes Benz >> 2002 >> C230 Standard >> Repair and Diagnosis >> Engine Mechanical >> Exhaust >> Exhaust Manifolds, Emission Control -- 203 Chassis >> Basic Knowledge >> Air shutoff valve, location/task/function - GF14.30-P-4028F

Air shutoff valve, location/task/function - GF14.30-P-4028F

ENGINE 104.941 /942 /943 /944 /991 /994 as of 1.8.96 

ENGINE 104.941/942 /991 /992 /994 with CODE (494a) USA version 

ENGINE 104.995 with CODE (494a) USA version with CODE (498) as of Model year 1997 Japanese version with CODE (807) Model year 1997 with CODE (808) Model Year 98 

ENGINE 111.961 with CODE (494a) USA version 

ENGINE 111.973 /975 with CODE (494a) USA version with CODE (923a) low emission D3 

ENGINE 111.974 with CODE (494a) USA version with CODE (807) Model year 1997 with CODE (808) Model year 1998 

ENGINE 111.951 /952 /955 /956 /957 /958 /982 /983 

ENGINE 112, 113 (except 112.96, 113.99) as of 1.6.00, 112.910 /911 /912 /914 /920 /921 /922 /923 /940 /941 /942 /943 /944 /946 /947, 113.940 /941 /942 /943 /960 /961 /963 /965 with CODE (494a) USA version with CODE (925) low emission EURO3 with CODE (926) low emission EURO4 

ENGINE 119.980 /981 /982 /985 with CODE (494a) USA version with CODE (920a) with exhaust air pump (secondary air injection) with CODE (923a) low emission D3 TIWAN ONLYKOREA ONLYas of 12/96 

ENGINE 120.982/ 983 

ENGINE 137.970 

ENGINE 166.940 in MODEL 168.031 /131 with CODE (925) low emission EURO3 

ENGINE 166.960 in MODEL 168.031 /033 /133 with CODE (925) low emission EURO3/D4 

ENGINE 166.990 in MODEL 168.032 /132 with CODE (925) low emission EURO3/D4 

ENGINE 166.995 in MODEL 168.035 /135 with CODE (925) low emission EURO3/D4 

Fig 1: Identifying Left And Right Air Shutoff Valve And Aspirator Shutoff Valve
G04732229USA ONLY
  Air shutoff valve position Engine 111 with air injection GF14.30-P-4028-01G 
    Engine 104 with air injection GF14.30-P-4028-01D
    Engine 112, 113 GF14.30-P-4028-01A 
    EURO3/4 and USA ONLY  
    Engine 137 GF14.30-P-4028-01L
    Engine 166 EURO3/D4 GF14.30-P-4028-01GC
    Engine 111 EVO (naturally aspirated engine) GF14.30-P-4028-01GR 
    Engine 111 EVO (supercharger) GF14.30-P-4028-01GS 
  Air shutoff valve task When air pump is switched off, preventing air being inducted into the exhaust ports, as a result of the flow of the exhaust gases.  
  Air shutoff valve function   GF14.30-P-4028-02F