What is the difference between a jet face and a jet body? Holly June 12, 2018 03:39 Updated Follow The jet face is the part of the jet where water flows through and is normally powered by a spa boost pump. The jet body is the part the jet face sits inside, the body has a seal around the outside so water cannot leak to the underside of the spa. Related articles What information do you need to find a replacement for my jets? Comments 0 comments Article is closed for comments.