This is a complete cylinder head assembly for certain Toyota trucks and SUVs. It's designed to fit models like the Toyota Tacoma (2.4L & 2.7L, 1995-2000), 4Runner (2.7L, 1996-2000), and T100 (2.7L, 1994-1998) equipped with the 2RZFE or 3RZFE 4-cylinder engines. The part number is 11101-79276 (also crosses to ES72182, HS9465PT-3). This isn't just the bare head; it's a full assembly that comes with a lot of the hard work already done. It includes the cylinder head itself, both the intake and exhaust camshafts (already installed), all 16 valves (intake and exhaust, installed), valve springs, seals, locks, shims, tappets, and a full bolt kit. It's essentially an overhaul kit in one box, which can save you significant time and effort compared to sourcing all the parts separately and having a machine shop rebuild your old head. Please double-check your vehicle's exact year, engine model, and number of ports (this is for 8-port heads) before ordering to ensure compatibility. Professional installation is highly recommended for this kind of engine work. The seller offers a 1-year warranty for peace of mind.