8.701-454.0 Orifice M-Reg #5.0/D-Reg #5.5 ships factory direct right to your door. ADDITIONAL PRODUCT NOTES: Interchangeable Orifice for Nozzle, #5.5 8.701-454.0 nozzle size nozzle size - 5.5, oem - a+, 084029, 87014540,