This Oxygen sensor fits most emission analyzers. This sensor has a 3-pin connector on top and screws threads on bottom. If your sensor looks like the one in photo it should work for your Emission Analyzer. These sensors are installed in many different brands of Emission Analyzers so refer to photo. If you have any questions E-mail us and we should be able to help. Below is a partial list of models and brands that use this sensor.
For Models:
Sanp-on MT3505 5-gas and MT3500 4-gas models
Sun DGA models
Kentmoore J39982 5-gas
Allen Test Products 53-500 4-gas
Bear 4 and 5 gas models
Bear Ace
Ferret instruments
Peerless
All parts warranteed for 90 days from purchase date