Toyota YARIS CROSS/HYBRID 2021- 1AZ 2AZ Aluminum 1AZ 2AZ Complete Cylinder Head 11101-28012 Carina/Corona/Picnic – OEM 11101-28011

Product Overview: This complete cylinder head assembly is precision built for Toyota 1AZ and 2AZ series 2.0 and 2.4-litre petrol engines used in a wide range of passenger cars, MPVs and hybrid models. It is supplied as a fully assembled unit with valves, guides and seats installed, machined to original equipment dimensions and ready to replace a warped, cracked or valve-damaged original cylinder head.

Key Features: The casting is produced from high-grade aluminium alloy and CNC-machined for accurate deck flatness, correct valve seat concentricity and matched combustion chamber volume. Valve guides and seats are pre-installed and honed for even sealing and balanced compression, while the cam carrier surfaces are finished to maintain correct bearing clearance for the DOHC valvetrain. Intake and exhaust flange faces are machined to original profiles for reliable gasket sealing and correct manifold alignment.

Vehicle Compatibility: This head suits Toyota Yaris Cross and Hybrid (2021 onwards), BZ4X (2022 onwards), Nadia (2000-2003), Camry Gracia (2000-2001), Isis (2004-2018) and Alphard Hybrid (2003-2008), plus related Camry, Corolla, Rukus and Scion models powered by the 1AZ or 2AZ engine. Confirm the engine code and OE number against the original component before ordering.

Specifications: Engine code 1AZ / 2AZ; displacement 2.0 L and 2.4 L; inline four-cylinder petrol; material aluminium alloy; standard size; new condition; complete assembly; 12-month warranty; designed for replacement and repair.

OEM / Reference Numbers: 11101-28011, 11101-28012, 11101-28020 and 11101-28021. Match these references against the casting marks on the original cylinder head to confirm the correct specification.

Applications: Suitable for family sedans, hatchbacks, MPVs, hybrid vehicles and compact SUVs, covering routine repairs, engine overhauls, rebuilds and fleet maintenance where a durable factory-specification head is needed.

Benefits / Replacement Information: Replacing a failed head with this assembly restores compression, stops coolant and combustion gas leakage, and resolves overheating caused by distortion or cracking. Supplying the head complete avoids the lead time and cost of individually reconditioning valves, guides and seats.

Installation or Fitment Notes: Installation should be carried out by a qualified technician. Inspect the block deck for flatness and clean all mating surfaces, fit a new head gasket and new head bolts where specified, and torque in the correct sequence. Replace timing and cooling components as required, verify valve clearances and cam timing, then run the engine to operating temperature and confirm there are no leaks before road testing.