Engine head bare for a Unimog 404 includes valve guides and valve seats installed. Later cylinder head with standard length spark plugs (not short reach). Standard compression 7.0:1.
If engine number is greater than below it should fit per Mercedes technical specifications used in many on Unimog applications.
Fits the following engines: 180.922 - 001578 180.926 - 000081 180.927 - 007301 180.928 - 001451 180.929 - 000569