Chrysler PT Cruiser Back Up Light Bulb Size

The Chrysler PT Cruiser back up light utilizes 3157 and 2458 bulb sizes for the rear illumination system. Available data for the specified components covers the period from 2001 to 2010.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Bulb Size by Year Range

Years	Bulb Size
2001-2010	3157

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Dual-filament wedge bulb (T25). 12V, 27W/7W.	3157

Other Locations

Additional Notes

The Chrysler PT Cruiser uses the 3157 bulb size for the back up light across all model years from 2001-2010.
The 3157 is an ANSI-standardized bulb type, meaning its specifications are governed by a recognized North American standard applicable in both the United States and Canada.
The 3157 is a dual-filament bulb, meaning it contains two separate filaments within a single housing, each operating at a different wattage: 27W for the primary filament and 7W for the secondary filament.
The bulb operates on a 12-volt electrical system, which is consistent with standard automotive electrical architecture.
The 3157 follows a T25 wedge form factor, referring to its tubular shape and the wedge-style base that secures it directly into the socket without a separate metal base or pins.
Because the 3157 is a dual-filament type, substituting it with a single-filament equivalent would result in the loss of one functional circuit, making filament count a critical factor in fitment.