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U535M bare projector lamp
Fits 3 projector models from Dell.
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Sold here as a bare bulb, U535M is a 280-watt lamp designed to fit inside the existing housing of a Dell 4210X, 4310WX or 4610X. Because it ships without a housing, it's intended for projectors where the current housing is undamaged and only the bulb needs replacing. Rated lamp life is 2000 hours across all three models.
This same bulb also carries the codes 317-1135 and 725-10134, so any of the three numbers will lead to this listing. If you're not sure whether your unit needs a bare bulb or a full module, check whether the housing itself is intact - cracked plastic or a broken fan mount usually means the module version is the better choice.
At a glance
- Wattage — 280 W
- Rated life — 2,000 hours
- Type — Bare Projector Lamp
- SKU — LA-08744
- Compatibility — 3 projector models
Common questions
Does the U535M fit all three projector models listed?
Yes, the U535M bulb is common to the Dell 4210X, 4310WX and 4610X, so one listing covers all three. There's no separate version needed for each model.
What are 317-1135 and 725-10134?
These are other part numbers Dell has used for the same U535M bulb. All three codes describe one identical lamp, so ordering under any of them gets you this product.
Can I use this bulb without swapping my current housing?
Yes, this is the bare bulb version, so it's built to be fitted into your existing housing rather than arriving with one of its own. You simply transfer the old bulb out and this one in.
How will I know when the lamp needs replacing?
Most projectors show a lamp warning once run-time approaches the rated 2000 hours, and the picture often dims or takes on a yellow tint before that point. Either sign is a reasonable trigger to fit a new bulb.
Should I let the projector cool before removing the old bulb?
Yes, the lamp compartment stays hot for a while after the projector is switched off, so it's worth waiting a few minutes before opening it. Handling a hot bulb also risks marking or cracking the glass.
This is a bare lamp — the bulb only. You reuse the housing already fitted in your projector.
Does the U535M fit all three projector models listed?
Yes, the U535M bulb is common to the Dell 4210X, 4310WX and 4610X, so one listing covers all three. There's no separate version needed for each model.
What are 317-1135 and 725-10134?
These are other part numbers Dell has used for the same U535M bulb. All three codes describe one identical lamp, so ordering under any of them gets you this product.
Can I use this bulb without swapping my current housing?
Yes, this is the bare bulb version, so it's built to be fitted into your existing housing rather than arriving with one of its own. You simply transfer the old bulb out and this one in.
How will I know when the lamp needs replacing?
Most projectors show a lamp warning once run-time approaches the rated 2000 hours, and the picture often dims or takes on a yellow tint before that point. Either sign is a reasonable trigger to fit a new bulb.
Should I let the projector cool before removing the old bulb?
Yes, the lamp compartment stays hot for a while after the projector is switched off, so it's worth waiting a few minutes before opening it. Handling a hot bulb also risks marking or cracking the glass.
Other Dell lamps in the catalogue. Codes in the same family often differ by a single character, so check the part number against your old lamp before ordering.
