A • 1″& 1-1/16′ Oil pressure sending unit socket
B 1-3/16″ Oil pressure sending unit socket
C 1-1/16″ GM thermal sensor switch socket
D • 7/8″ Heated oxygen sensor socket
E • 7/8″ Low profile offset oxygen sensor socket
F 7/8″ Oxygen sensor socket
G • 7/8″ Universal vacuum PVS, TVS valve and oxygen sensor socket
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