Jayco doesn't offer one that I'm aware of, but I recently bought a custom made/fit dash cover for our '16 Precept 31UL from Shade Pro in CA and while a bit expensive, it fits like a glove, doesn't slide/move around, protects the entire dash from windshield to instrument panel and best of all my wife even loves it!
Really impressed with how well it fits over all of the contours of the dash. You can see them online shadepro.com Good luck!