Nissan YD25 cylinder head assembly 4 port 171330
171330The Nissan YD25 cylinder head assembly (4-port) 171330 suits engines that start to lose compression, misfire under load, or show signs of top-end wear. The head sits in place like the original and lines up cleanly with the YD25 4-port layout. Workshops often choose this assembly when the old head cracks between ports or after overheating. It works well for rebuilds and keeps the engine running smoother once everything is torqued down and timed properly.
The cylinder head for Nissan YD25 (4-port) 171330 fits engines that run in Navara, Pathfinder, and similar platforms that use the YD25 layout. Many engines at this age show cracks between ports or lose compression when the original head wears out. This assembly sits correctly on the block and lines up with the factory port pattern, so the installer doesn’t fight with fitment during the rebuild.
Most technicians pick a complete head when the old unit overheats or the gasket burns through. It saves time because they don’t have to rework damaged surfaces or chase internal leaks. Another thing worth noting is how the coolant and oil passages match the original design, so the engine runs as it should once everything is bolted down.
Why workshops choose this YD25 head
- Fits the 4-port YD25 engine layout with clean alignment
- Supports stable compression after rebuild
- Helps solve overheating-related cracks and gasket failures
- Works well for full engine overhauls or straight replacement jobs
- Reduces time spent on machining or repair work
In most cases, once this head goes on and the timing sits correctly, the engine settles into a smoother idle. Acceleration also feels more stable since the cylinders build even pressure again.
If you're running a workshop, handling fleet maintenance, or fixing your own vehicle, this assembly gives you a straightforward way to bring a tired YD25 back to normal operation. It fits, it holds, and it works the way a rebuild part should.
For clean casting, accurate fitment, and components checked before dispatch, Acme Impex stands as a practical source for engine parts that support long-lasting performance.