A TSB provided by Subaru notes a change made to the oil level gauge and guide. On a rare occasion, there is a possibility that the oil level gauge could be damaged if too much force is applied when installing or removing. As a result, the diameter of the oil level gauge was increased along with the inside diameter of the oil level gauge guide (dipstick tube). This applies to 2011-2012 Forester and 2010 Impreza models.
The new style oil level gauge and guide was incorporated into production on Nov. 12, 2011, starting with the following VINs and engine number:
YEAR MODEL VIN ENGINE
2012 Forester C*421765 0191510
2012 Impreza sedan C*010046 0191510
2012 Impreza wagon C*208992 0191510
PARTS INFORMATION
NAME NEW P/N OLD P/N VEHICLE
Gauge assembly – oil level 11139AA070 11139AA021 Forester
Gauge assembly – oil level 11139AA061 11139AA060 Impreza
Guide assembly – oil level 15144AA240 15144AA160 Forester/Impreza
