This is a direct replacement for the HXL3F series pump. The HXL3 has an external oil pump attached to the front of the pump and a double shaft rotor to accommodate CW and CCW needs.
The HD3F has a mounted dripper style oiling system and a double shaft rotor to accommodate CW and CCW needs.
*Replacement Parts will vary between the HXL3 and the HD3. These will be marked accordingly on the website*