Mitsubishi 4M42 4AT Cylinder assembly including cams (common rail) ME194151 908516 171226
171226The Mitsubishi 4M42 / 4AT cylinder head assembly comes ready with camshafts installed. It fits common-rail engines that use references ME194151 and 908516. Workshops use this assembly when the old head cracks, overheats, or loses compression. It sits in place without trouble and lines up with the factory layout, so technicians can get the job done quicker. A good choice when you want steady engine performance after a rebuild.
The cylinder head assembly suits Mitsubishi 4M42 and 4AT common-rail engines. It comes with the cams already sitting in place, which saves setup time during the rebuild. Most mechanics using this head work on vehicles that show low compression or signs of heat damage, and they want a part that installs cleanly without fighting the alignment.
Another thing worth noting—this casting sits well on engines that use reference numbers ME194151 and 908516. The ports line up as expected, and the head holds combustion pressure the way it should once the job is done. You don’t need to chase unusual fittings or adjustments; it works with the usual workshop routine.
Sometimes the original head wears unevenly or cracks near the fire rings. In those cases, this assembly gives the engine a fresh top section so the vehicle comes back with smoother running and better starting behaviour.
Why workshops choose this assembly
- Fits Mitsubishi 4M42 / 4AT common-rail engines
- Cams come pre-installed to save time
- Matches factory port layout and seating points
- Helps fix compression loss, overheating, and top-end wear
- Works well for scheduled rebuilds and direct replacements
Most technicians prefer a head that sits right the first time, and this one does that. With proper installation, it supports stable running and helps the engine hold power the way it should.
If you want a cylinder head assembly that fits the 4M42 platform without complications, this option works well for regular workshop use. It’s a straightforward choice when you want the engine back to normal operation.