Premium Fuel Injectors Specifications: O-Rings Included: Yes, preinstalled Injector Design: Metal & composite plasticer design at inlet Fuel delivery type: Multi-hole, fog-type spray, excellent fuel atomization Compatible with the following vehicles: For for Toyota: 2003-2006 Matrix All Engines 2000-2004 Celica 1.8L Engines 2000-2004 for Corolla All Engines MR2 Spyder 1.8L Engines For Pontiac: 2003-2005 Vibe 1.8L Engines .