SPARK (M300) 2010-2015 B12D1 OEM 24101581 24539991 B12D1 B12D Complete Cylinder Head for Chevrolet Spark N300 Aveo Spark 1.2L – OEM 25183627

Product Overview: This complete cylinder head assembly is engineered for the Chevrolet, Daewoo and Ravon B12D1 and B12D 1.2-litre petrol engines, the compact four-cylinder powerplants fitted to the Spark, Aveo, Matiz and Kalos families. It is supplied fully assembled as an aluminium unit with valves installed where applicable, machined to original equipment tolerances and pressure tested, making it a dependable replacement for a warped, cracked or valve-damaged original head.

Key Features: The casting is produced from high-grade aluminium alloy and CNC-machined for accurate deck flatness, correct valve seat concentricity and consistent combustion chamber volume. Valve guides and seats are installed and honed to deliver even sealing and balanced compression across all four cylinders. Machined cam carrier surfaces maintain correct bearing clearance in the DOHC 16-valve layout, and the intake and exhaust flange faces are finished for reliable gasket sealing. The lightweight aluminium construction also assists heat dissipation in this small-displacement engine.

Vehicle Compatibility: This head fits Chevrolet Spark M300 (2010-2015), Spark Classic (2016-2020), Spark GMSA (2011-2017) and Spark Europe (2010-2020) models, plus related Aveo, Matiz, Daewoo Kalos and Ravon applications using the B12D1 or B12D engine. Confirm the engine code, casting number and OE reference before ordering.

Specifications: Engine code B12D1 / B12D; displacement 1.2 litres; inline four-cylinder petrol; DOHC 16-valve; material aluminium alloy; standard size; new condition; valves included; complete assembly; 12-month warranty; purpose replacement and repair.

OEM / Reference Numbers: 25183627, 24542621, 9002810, 09048771, 96858203, 96946000, 24543398AA, 24101581 and 24539991. These references cover several production revisions, so cross-check them with the original head.

Applications: Suitable for small city cars, compact hatchbacks and light urban vehicles, covering daily driver repairs, workshop overhauls, engine rebuilds and fleet maintenance programmes requiring a factory-specific head.

Benefits / Replacement Information: Installing this assembly restores compression, resolves coolant loss and combustion leakage caused by cracks or distortion, and avoids the expense of separately re-machining the original casting. A complete unit shortens repair time and delivers factory-matched sealing.

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