Optimizes fuel combustion efficiency to save fuel consumption. For Celica 1987 ,Material:Plastic + Metal,Porous fuel injectors allow quick starts in cold environments. Reduced flow fluctuations for precise fuel control. Package Contents: 4 x Fuel Injectors,Smaller fuel particles to reduce engine fuel consumption. Added fuel filtration protection to remove and optimize engine . Our fuel injectors have more complete atomization and combustion, greater power, more economical, more stable acceleration, smoother shifting, less knocking. Effectively reduces engine exhaust emissions., Manufacturer: NMJLQW