COMPATIBLE VEHICLE: 2005-2006 for Mercury Mariner. FEATURES: Reference number: 25335288 Terminal Quantity: 2, O-Rings Included: Yes, Injector Design: Metal composite plastic, quantity: 4 Fuel Injectors. EASY INSTALLATION: 4 fuel injectors are designed to work together and can be installed in one step, making driving more stable and comfortable. WHEN TO REPLACE THE FUEL INJECTOR: When driving, the power is insufficient, the fuel injection efficiency is not high, and the fuel consumption is high, so the fuel injector needs to be replaced. Otherwise, the fuel injector will malfunction and the fuel injection quantity will not be aligned, ultimately affecting the air-fuel ratio..
