Toyota 86 2016- 1ZZ 1ZZ 2ZZ Cylinder Head Assembly 11101-22101 Corolla – OEM 11101-22071

Product Overview: This complete cylinder head assembly is a direct-fit replacement engineered for Toyota 1ZZ-FE and 2ZZ series four-cylinder petrol engines. It is supplied fully assembled with finish-machined camshaft journals, valve seats, valve guides and combustion chambers, so a cracked, warped or valve-damaged original head can be replaced without additional machining work. The casting is produced from high-grade aluminium alloy, with cast iron versions available for specific applications, and every unit is pressure and vacuum tested before packing.

Key Features: The head is CNC-machined to original equipment tolerances to deliver correct deck flatness, valve seat concentricity and accurate port geometry. Valve guides and seats are pre-installed and honed, and combustion chamber volumes are matched cylinder to cylinder for balanced compression and a smooth idle. Reinforced casting walls around the valve bridge and spark plug bosses improve thermal durability under sustained load, while the machined cam carrier surface ensures correct bearing clearance and reliable camshaft support.

Vehicle Compatibility: This assembly fits Toyota 86 (2016 onwards), Corolla sedan and hatchback variants (2001-2019, including JPP and UKP builds), Corolla TUP (2019 onwards), Yaris GRMN (2017-2018) and Scion FR-S, iM and xB models that use the 1ZZ/2ZZ family. Always confirm the engine code and OE number against the original component before ordering.

Specifications: Engine code 1ZZ / 2ZZ; configuration inline four-cylinder, 16-valve DOHC; material aluminium alloy or cast iron; standard size deck height; new condition; supplied as a complete assembly; 12-month warranty; intended for replacement and repair use.

OEM / Reference Numbers: 11101-22071, 11101-22101, 11101-22052, 11101-22051 and 11101-0D031. Cross-reference these numbers with the casting marks and part label on the original head to confirm the correct variant.

Applications: Suitable for passenger cars, coupes and light SUV applications using the 1ZZ/2ZZ powerplant, including daily drivers, workshop repairs, engine rebuilds, fleet maintenance and performance rebuild projects where a factory-specification head is required.

Benefits / Replacement Information: Fitting this assembly restores compression, removes coolant loss and combustion gas transfer caused by cracks or gasket failure, and eliminates the cost of separate valve and guide machining. A complete unit shortens vehicle downtime compared with rebuilding the original casting.

Installation or Fitment Notes: Installation should be carried out by a qualified technician. Clean and check the block deck for flatness, fit new head bolts where specified, torque in the correct sequence to the manufacturer's specification, and replace the head gasket, timing components and coolant. Verify valve clearances and cam timing after assembly, then pressure test and bleed the cooling system before road use.