Oxygen Sensor Unit Protective Pipes

NOTE:

In addition to using the part number, the protective pipe can also be used for identification.

Version D1, 6 openings, 3.5 mm each

Only used with the 4-pin oxygen sensor

Fig 1: Identifying Version D1 - 6 Openings, 3.5 Mm Each

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Version D2, 6 openings, 2 mm each

Used with 4-pin and 6-pin universal oxygen sensors.

Fig 2: Identifying Version D2, 6 Openings, 2 Mm Each

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Version D4, 12 openings, 1.4 mm each

Used with 4-pin and 6-pin universal oxygen sensors.

Fig 3: Identifying Version D4, 12 Openings, 1.4 Mm Each

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.