BUSlink ultra high pressure O.E.M equivalent replacement lamp modules are brand new manufactured including bulb and housing as a complete lamp unit simply plug-in, reset projector then play. These are high quality projector replacement. They are no difference in brightness as light source and picture quality compare to O.E.M.Please locate your projector manufacturer"s model number from original user manual or off an identification decal on your projector unit. Also, locate and verify lamp code/part number required off your existing or original lamp housing then confirm your model & part numbers are matched according to projector service manual before you make a purchase.Always use your manufacturer owner"s service manual for lamp application, troubleshooting, installation, new lamp resetting procedures, and maintenance of your projector unit.