DEF Heads, are Spartan and Frieghtliner the same or are they each proprietary?

[Rustymayes]

Looking into buying a DEF simulator to have just in case of a failure. Just wondering if the systems are interchangeable. Even though we only have 7000 miles on the coach in a year and a half, I am beginning to realize these things break any time they damn well want to.
Thanks

 

[flyboy013]

When building one, the only difference is the 4 pin connector that's attached. A neighbor of mine had a brand new 2023 King Aire with 1,000-2,000 and the DEF Head failed, so I'd say it can happen at any time.

DEF Sensor Simulator – CanBed RP2040 – DEF Sensor Simulator

DSS connector plug for Freightliner chassis (XCM) – DEF Sensor Simulator

 

[Texas Clodhopper]

If you question is, are the Spartan and Freightliner DEF heads the same, no they are not. They are designed and manufactured by two different companies.