Reliable performance and easy installation. Give you a pleasant experience. 4X Side 555Cc Fuel Injectors Replacement for Nissan for silvia S13 14 15 SR20DET 16600-RR543 . It has the characteristics of high plasticity, toughness index and high compressive strength, and is suitable for the working environment of the for engine. The fuel injector is capable of long-term, stable operation under high-pressure conditions. The nozzle structure has been precision-machined to ensure uniform fuel atomisation, which promotes complete combustion of the fuel within the engine cylinders. The AR fuel injector nozzle delivers a stable and balanced fuel supply, maintaining a steady engine idle speed, effectively reducing acceleration lag and minimising mechanical noise during operation. It helps to minimise unnecessary fuel wastage, thereby improving overall fuel economy under everyday driving conditions., Manufacturer: Zynther