The Oni Tools Fuel System Priming Pump for Detroit Diesel S60, MBE 900, MBE 40000, DD13, DD15 features a dual-chamber design, an ergonomic handle, a built-in temperature gauge, and a pressure gauge to provide an ideal user experience. Users can also pressurize the tank manually with the handle or with a compressor via the Schrader valve. This feature enables faster and more accurate pressurization to reach the exact psi levels required. Additionally, the priming pump has a specific fitment for priming, ensuring a tight and secure connection between the pump and the fluid source, as well as a pressure release valve for added safety.