D1R Xenon HID Replacement Bulb (85409 / 66154): Fitment and Install

D1R 85409 66154 Xenon HID Bulb

Short answer: our D1R Xenon HID Bulb is a 35W direct replacement for a factory D1R bulb, the same type as Philips 85409 and Osram 66154. It is sold as one bulb, in 4300K, 5000K or 6000K. Check that your old bulb says D1R, not D1S or D2R.

Vehicles listed

  • BMW K1200GT 2005–2008, K1300GT 2009
  • Cadillac Escalade 2003–2006
  • Lincoln Navigator 2003–2006
  • Lincoln Town Car 2003–2011
  • Mercury Montego 2005–2007

Factory HID is not standard on every trim. Pull your old bulb and read the code on its base.

Specs

  • Type: D1R xenon HID
  • Wattage: 35W
  • Pack: 1 bulb
  • Rated life: up to 3,000 hours per the listing
  • Colors: 4300K (closest to factory), 5000K, 6000K

How to install safely

  1. Turn the lights off and disconnect the battery. HID igniters carry high voltage.
  2. Let the bulb cool fully.
  3. Remove the headlight cover and unlock the old bulb.
  4. Hold the new bulb by its base. Do not touch the glass.
  5. Seat it, lock it and refit the cover.
  6. Reconnect the battery and test.

Replace bulbs in pairs. A new bulb next to an old one will look a different color.

FAQ

What does the R in D1R mean?

R is for reflector headlights. A D1R bulb has a coating that helps shape the beam in a reflector housing. D1S bulbs are made for projectors, and the two are not interchangeable.

Which color temperature should I pick?

Choose 4300K for the closest match to factory HID . 5000K and 6000K look whiter and bluer. Many drivers find warmer light easier to see with in rain or fog.

Do I need to replace both bulbs?

It is a good idea. HID bulbs shift color as they age, so one new bulb next to an old one often looks mismatched. This listing is for one bulb, so order two for a pair.

My new bulb will not light. What now?

Check that it is fully seated and locked, and that the connector clicked. If it still does not light, the ballast or igniter may be at fault. Call us before you return the bulb.

Questions before you order? Call us at 702-988-6800, Mon–Fri 8am–3pm PT. GENSSI has been in business since 2013. Shipping is free to the lower 48, and returns are accepted within 30 days with an RMA.

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