The Chrysler PT Cruiser fog light utilizes 9145 and 9006 bulb sizes for the front illumination system. Data for the specific components covers the time range from 2001 to 2010.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Chrysler PT Cruiser front fog light specification calls for two distinct bulb types across its production run, with the 9006 used in 2001-2005 models and the 9145 used in 2006-2010 models.
The 9006 is a single-filament halogen bulb operating at 12V and 55W, fitted with a P22d base, and conforming to ANSI standards applicable in the US and Canada.
The 9145 is also a single-filament halogen bulb at 12V but draws only 42W, uses a PY20d base, and likewise meets ANSI standards for the US and Canada.
Because the 9006 and 9145 carry different base types, P22d and PY20d respectively, the two bulbs are not interchangeable despite both being single-filament halogen units rated at 12V.
The wattage difference between the 9006 at 55W and the 9145 at 42W means the two bulb types also produce different light output levels, which is a relevant factor when considering any cross-compatibility.
A rear fog light specification exists for the Chrysler PT Cruiser (2002-2003), though it is designated for export variants only, using the 3157 bulb.
The 3157 is a dual-filament wedge bulb in the T25 form factor, rated at 12V with a high filament of 27W and a low filament of 7W, conforming to ANSI standards for the US and Canada.
The dual-filament design of the 3157 distinguishes it functionally from the single-filament 9006 and 9145 bulbs used in the front fog positions, as it supports two separate brightness levels within one housing.