Cylinder head The EJ251 and EJ252 engines had an aluminium alloy cylinder head with cross-flow cooling.
Pistons The EJ251 and EJ252 engines had cast aluminium pistons.
Other features of the pistons included solid-type piston skirts, flat top combustion surfaces and reduced top land to cylinder clearance.
Please note that this article considers the EJ251 and EJ252 engines as they were supplied in Australian-delivered vehicles; specifications for other markets may vary.
Pistons The EJ251 and EJ252 engines had cast aluminium pistons.
Other features of the pistons included solid-type piston skirts, flat top combustion surfaces and reduced top land to cylinder clearance.
Please note that this article considers the EJ251 and EJ252 engines as they were supplied in Australian-delivered vehicles; specifications for other markets may vary.