Need help on what I thought would be an easy part find.

[KRAM36]

Can someone tell me what backup/reverse bulb is used in a 2003 Boxster S?

I thought this would be easy to find on Pelican's website, but not so much.

I know the turn signal bulb is a 7507.

Please someone tell me what the backup/reverse bulb number is.

[911monty]

Kram; Isn't it listed in your owner manual? I have a 98 it may be the same. mine says it is a P 21 W.

[particlewave]

Yes, P21W.
I have some freebies if you need...

[KRAM36]

Thanks guys. Looking at getting some LED bulbs and needed to know which bulb type.

[lkchris]

P21W is the German standard bulb for brake lights, backup lights, rear fog light, and turn signsls behind orange lenses. Has been this way since the 1970s if not earlier. By German standard, think every German car. If you have clear turn signal lenses, it's PY21W, which is physically not interchangeable ... that explaining why when you convert your early Boxster tails to later version, you need the newer bulb holder as well as the lens.

[KRAM36]

Originally Posted by lkchris

P21W is the German standard bulb for brake lights, backup lights, rear fog light, and turn signsls behind orange lenses. Has been this way since the 1970s if not earlier. By German standard, think every German car. If you have clear turn signal lenses, it's PY21W, which is physically not interchangeable ... that explaining why when you convert your early Boxster tails to later version, you need the newer bulb holder as well as the lens.

Thanks lkchris. I do have the clear tail lights.