These Fuel Pressure Regulators are designed and tested at 44-46psi which is slightly higher than the stock LTR450 pressure of 42psi. The increased pressure helps improve fuel delivery, minimizes cutting out and sputtering and can possibly help modified engines from running lean.
Kit includes (everything in the main picture):
(1) Fuel Pressure Regulator mechanism (OEM Version 44-46psi)
(2) Internal O-Ring
(3) External housing O-Ring