Officers were called to a report of a theft in progress in Sychem Lane, #FiveOakGreen, at around 1.45pm, yesterday.
It is alleged the suspects were using an angle grinder to remove a security mechanism on the horse box.
Officers from the Tonbridge and Tunbridge Wells Local Policing Team attended and located the suspects as they were attempting to leave the scene. The horsebox had been hitched to their van.
A 52-year-old man and a 33-year-old man, both from the Surrey area, were arrested and taken into custody. The van was also seized. Work is ongoing to identify the owner of the horsebox.