A well used cylinder head from a GMC van. Placed under the GFDL and uploaded by the copyright holder.

(yes it's ugly, but you can see the parts and it's GFDL)

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License , Version 1.2 only as published by the Free Software Foundation ; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License .

1.2 only http://www.gnu.org/licenses/old-licenses/fdl-1.2.html GFDL 1.2 GNU Free Documentation License 1.2 true true