Yanmar 4D94E cylinder head semi assembled indirect injection type 174D94E-1
174D94E-1This Yanmar 4D94E cylinder head (semi-assembled, indirect injection type) 174D94E-1 fits engines used in loaders, forklifts, and compact machinery. It sits in place with the original configuration and works well for engines that start to lose compression or show signs of head damage. The head comes partly assembled, so most workshops fit it quickly without extra prep. It’s a solid choice for anyone rebuilding a 4D94E engine and wants dependable, long-use performance.
This cylinder head sits right into the Yanmar 4D94E indirect injection setup. Anyone who works on these engines knows they start to struggle once the head cracks or the combustion chambers lose shape. This replacement head gives you a clean base to start the rebuild. The machining lines up well with the 4D94E layout, so the ports sit where they should, and the gasket seals without fuss.
Most workshops like the semi-assembled format because it cuts down setup time. You fit your remaining parts, tighten everything in sequence, and the head holds compression the way the engine needs. Another thing worth noting—this casting stays stable under heat, which helps when the machine works long hours.
Why this head works well in the 4D94E engine
- It matches the indirect-injection chamber shape used in this engine series.
- The semi-assembled format saves setup time in most rebuilds.
- It holds compression properly when installed with new gaskets.
- Ports and mounting points line up neatly with the factory layout.
- Useful for machines that face cracked heads, overheating marks, or compression loss.
In most cases, mechanics choose this head when they want a straightforward replacement without dealing with repair welding or resurfacing old castings. It supports smooth running, stable idling, and better cold starts once everything is fitted.
Acme Impex checks the casting and fitment before shipping, so workshops get a head that sits flat and matches the original pattern. If you're rebuilding a Yanmar 4D94E engine and want a part that works without complications, this cylinder head is a practical purchase for long-term engine use.