When doing replacement or upgrading on 2001 – 2018 Toyota Prius C Plug-In Prime V capsule halogen headlamps HID LED Lights Parking with without, the bulb size guide is necessary for you to take the reference.
Jump to corresponding car model with the catalog bellow.

High Beam and Low Beam Headlight2001 – 2003 9003
Back Up Light2001 – 2003 921
Brake2001 – 2003 7443
Dome Light2001 – 2003 DE3175
Front Side Marker2001 – 2003 168
Front Turn Signal2001 – 2003 7440NA
License Plate2001 – 2003 168
Parking Light2001 – 2003 168
Rear Turn Signal2001 – 2003 7440
Tail Light2001 – 2003 7443
Center High Mount Stop Light2001 – 2003 168
Trunk2001 – 2003 194
Low Beam Headlight2010 – 2015 H11
High Beam Headlight2010 – 2015 9005
High Beam and Low Beam Headlight2004 – 2009 9003
Front Fog Light2004 – 2009 9006
2010 – 2015 H8/H11/H16
Back Up Light2004 – 2015 7440
Daytime Running Light2012 – 2015 9005
Dome Light2004 – 2015 DE3175
Front Side Marker2004 – 2015 194
Front Turn Signal2004 – 2015 7440NA
License Plate2004 – 2009 168
2010 – 2015 194
Parking Light2004 – 2009 12961
2010 – 2015 194
Rear Turn Signal2004 – 2015 7440NA
Tail Light2004 – 2009 194
Luggage Compartment2004 – 2015 DE3022
Courtesy2004 – 2009 168
Interior Door2010 – 2015 194
Map Light2010 – 2011 168
2004 – 2009, 2012 – 2015 194
High Beam and Low Beam Headlight2004 – 2005 D2R
2006 – 2009 D4R
Front Fog Light2004 – 2009 9006
Back Up Light2004 – 2009 7440
Dome Light2004 – 2009 DE3175
Front Side Marker2004 – 2009 194
Front Turn Signal2004 – 2009 7440NA
License Plate2004 – 2009 168
Parking Light2004 – 2009 12961
Rear Turn Signal2004 – 2009 7440NA
Tail Light2004 – 2009 194
Luggage Compartment2004 – 2009 DE3022
Courtesy2004 – 2009 168
Map Light2004 – 2009 194
Back Up Light2016 – 2018 921
Dome Light2016 – 2018 DE3175
Front Turn Signal2016 – 2018 7440NA
Rear Turn Signal2016 – 2018 7440NA
Luggage Compartment2016 – 2018 194
Interior Door2016 – 2018 194
Map Light2016 – 2018 168
Back Up Light2016 – 2018 921
Dome Light2016 – 2018 DE3175
Front Turn Signal2016 – 2018 7444NA
Parking Light2016 – 2018 7444NA
Rear Turn Signal2016 – 2018 7440NA
Luggage Compartment2016 – 2018 194
Interior Door2016 – 2018 194
Map Light2016 – 2018 168
Low Beam Headlight2012 – 2014 H11
High Beam Headlight2012 – 2014 9005
Front Fog Light2012 – 2014 H8/H11/H16
Back Up Light2012 – 2018 921
Daytime Running Light2012 – 2014 9005
Dome Light2012 – 2018 194
Front Side Marker2012 – 2014 12961
2015 – 2018 194
Front Turn Signal2012 – 2014 7440NA
2015 – 2018 7444NA
License Plate2012 – 2014 12961
2015 – 2018 194
Parking Light2012 – 2014 12961
2015 – 2018 7443NA
Rear Side Marker2012 – 2014 12961
Rear Turn Signal2012 – 2018 7440NA
Tail Light2012 – 2014 12961
Luggage Compartment2012 – 2014 12961
2015 – 2018 194
Map Light2012 – 2014 168
2015 – 2018 194
Low Beam Headlight2012 – 2015 H11
High Beam Headlight2012 – 2015 9005
Front Fog Light2012 – 2015 H8/H11/H16
Back Up Light2012 – 2015 7440
Daytime Running Light2012 – 2015 9005
Dome Light2012 – 2015 DE3175
Front Side Marker2012 – 2015 194
Front Turn Signal2012 – 2015 7440NA
License Plate2012 – 2015 194
Parking Light2012 – 2015 194
Rear Turn Signal2012 – 2015 7440NA
Luggage Compartment2012 – 2015 DE3022
Interior Door2012 – 2015 194
Map Light2012 – 2015 194
Back Up Light2017 – 2018 921
Dome Light2017 – 2018 DE3175
Luggage Compartment2017 – 2018 194
Interior Door2017 – 2018 194
Map Light2017 – 2018 168
Low Beam Headlight2012 – 2018 H11
High Beam Headlight2012 – 2018 9005
Front Fog Light2015 – 2018 H8/H11/H16
Back Up Light2012 – 2018 7440
Daytime Running Light2012 – 2018 9005
Dome Light2012 – 2018 DE3175
Front Side Marker2015 – 2018 168
2012 – 2014 194
Front Turn Signal2012 – 2014 7440NA
2015 – 2018 7443NA
License Plate2015 – 2018 168
2012 – 2014 194
Parking Light2015 – 2018 168
2012 – 2014 194
Rear Turn Signal2012 – 2018 7440NA
Luggage Compartment2012 – 2014 DE3022
2015 – 2018 DE3175
Interior Door2012 – 2018 194
Map Light2015 – 2018 168
High Beam Headlight2012 – 2014 9005
Front Fog Light2015, 2017 – 2018 H16
2012 – 2014, 2016 H8/H11/H16
Back Up Light2012 – 2018 7440
Daytime Running Light2012 – 2014 9005
Dome Light2012 – 2018 DE3175
Front Side Marker2012 – 2014 194
Front Turn Signal2012 – 2018 7440NA
License Plate2015 – 2018 168
2012 – 2014 194
Parking Light2012 – 2014 194
Rear Turn Signal2012 – 2018 7440NA
Luggage Compartment2012 – 2018 DE3022
Interior Door2012 – 2018 194
Map Light2015 – 2018 168