When doing replacement or upgrading on 2004 – 2018 Nissan Titan XD with halogen capsule headlamps, the bulb size guide is necessary for you to take the reference.
Jump to corresponding car model with the catalog bellow.

Low Beam Headlight2004 – 2015 9006
High Beam Headlight2004 – 2015 9005
Front Fog Light2011 – 2015 880
2004 – 2010 899
Back Up Light2004 – 2015 921
Brake2004 – 2015 3157
Dome Light2004 – 2015 DE3175
Front Side Marker2004 – 2015 194
Front Turn Signal2011 – 2015 3157
2004 – 2008 3157NA
2009 – 2010 3457
License Plate2004 – 2015 168
Parking Light2004 – 2008 3157
2009 – 2015 3457
Rear Side Marker2011 – 2015 3157
Rear Turn Signal2004 – 2015 3156
Tail Light2004 – 2015 3157
Luggage Compartment2009 – 2015 912
2004 – 2008 921
Center High Mount Stop Light2009 – 2015 912
2004 – 2008 921
Door Mirror Illumination Light2004 – 2015 906
Glove Box2004 – 2015 158
Interior Door2004 – 2015 194
Map Light2009 – 2015 168
2004 – 2008 DE3175
Stepwell2004 – 2015 158
Low Beam Headlight2017 – 2018 H11
High Beam Headlight2017 – 2018 9005
Front Fog Light2017 – 2018 H8/H11/H16
Back Up Light2017 – 2018 921
Brake2017 – 2018 PW16WHTR
Daytime Running Light2017 – 2018 P13W
Dome Light2017 – 2018 DE3175
Front Side Marker2017 – 2018 194
Front Turn Signal2017 – 2018 7444NA
Parking Light2017 – 2018 7443NA
Rear Turn Signal2017 – 2018 3057
Tail Light2017 – 2018 3057
Glove Box2017 – 2018 74
Map Light2017 – 2018 DE3175
Stepwell2017 – 2018 158
Low Beam Headlight2016 – 2018 H11
High Beam Headlight2016 – 2018 9005
Front Fog Light2016 – 2018 H8/H11/H16
Back Up Light2016 – 2018 921
Brake2016 – 2018 PW16WHTR
Daytime Running Light2016 – 2018 P13W
Dome Light2016 – 2018 DE3175
Front Side Marker2016 – 2018 194
Front Turn Signal2016 – 2018 7444NA
Parking Light2016 – 2018 7443NA
Rear Turn Signal2016 – 2018 3057
Tail Light2016 – 2018 3057
Glove Box2016 – 2018 74
Map Light2016 – 2018 DE3175
Stepwell2016 – 2018 158