CHEVROLET AVEO / KALOS Hatchback 2004.01-2008.05 1.2 (53KW,72PS) Assembly Engine Cylinder Head B10S1 B12S1 OEM 96666228 96642709 for Chevrolet Spark Daewoo Matiz – OEM 96642709

Product Overview: A new cylinder head assembly for the B10S1 B12S1 gasoline (petrol) engine, supplied complete and ready to fit. The casting is machined on CNC centres to original-equipment tolerances, pressure tested for integrity and assembled with new valve train components, making it a practical alternative when the original head is beyond economical repair. Each head is measured at the critical interfaces before it leaves production, covering deck flatness, valve seat and guide condition, camshaft bearing clearance and chamber volume, and is then pressure tested so that it is installation-ready on arrival.

Key Features: Precision CNC machining delivers correct combustion chamber volume, accurate valve seat angles and matched port dimensions. New valve guides and seats are installed and finished after fitment, camshaft bearing surfaces are machined to the specified running clearance, and reinforced walls around the ports and plug or injector bosses add strength where thermal stress is highest.

Vehicle Compatibility: This assembly is confirmed against the following applications: Chevrolet Aveo / Kalos Hatchback (2004.01-2008.05) 1.2 (53KW,72PS); Chevrolet Matiz (2007.01-) 1.0 (48KW,65PS); Daewoo Matiz (2003.01-) 1.0 (47KW,64PS); Daewoo Kalos (2003.04-) 1.2 (53KW,72PS); Chevrolet Matiz (2005.03-2007.12) 1.0 (47KW,64PS); Chevrolet Matiz (2005.03-) 1.0 (49KW,67PS); and further market variants of the same models. Because manufacturers often revise part numbers within the same model generation, always confirm the engine code and original reference number on the vehicle or the failed component before ordering.

Specifications: Engine code: B10S1 B12S1; configuration: Inline 4 cylinder; displacement: 1.0 L / 1.2 L; fuel type: gasoline (petrol); material: Aluminum Alloy; condition: new; purpose: replacement or repair; supplied as a complete, fully assembled cylinder head; warranty: 12 months.

OEM / Reference Numbers: Reference numbers: 96642709, 96666228, 96325166. Where several numbers are listed, they represent superseded or market-specific equivalents of the same part. Verify the number on the original unit, casting or label against this list to avoid a mis-fit.

Applications: Typical applications include Chevrolet Spark Beat / Daewoo Matiz using the B10S1 B12S1 engine.

Benefits / Replacement Information: A prepared replacement removes the guesswork and delay of rebuilding the original unit in-house. Compression, clearances and sealing are already verified, so the vehicle returns to service quickly with restored power, cleaner emissions and dependable cold-starting behaviour.

Installation or Fitment Notes: Fitment must be performed by a trained mechanic with the correct tooling. Verify block deck condition, use new gaskets and stretch bolts, follow the specified torque and angle sequence, and renew the timing drive, water pump and thermostat where the service schedule requires it. After assembly, check valve clearances and cam timing, pressure test the cooling system and clear any stored fault codes.