Toyota 1HZ cylinder head assembly 171529
171529This Toyota 1HZ cylinder head assembly suits workshops and owners who need a solid replacement for worn or cracked heads in the 1HZ diesel engine. The casting sits clean, the ports line up well, and the head works smoothly once fitted with the rest of the top-end parts. It’s a practical choice for anyone rebuilding a 1HZ engine used in Land Cruiser and similar models. If your old head shows overheating marks or uneven compression, this assembly helps you get the engine back to steady running.
This Toyota 1HZ cylinder head assembly fits directly on the 1HZ diesel engine, a setup commonly found in Land Cruiser platforms used for towing, rough roads, and long-distance work. Most mechanics who handle these engines know that once a 1HZ head develops cracks around the seats or water jackets, the engine starts dropping power and breathing unevenly. This assembly solves that by giving you a clean, straight base to build the top end again.
The casting holds its shape well. The coolant and oil passages sit exactly where they should, so installation stays predictable. You don’t have to struggle with misaligned ports or surfaces that don’t sit flat. Another thing worth noting is how the head accepts standard 1HZ components without adjustment—you simply fit your valves, cam gear, and other hardware, and everything lines up the way the engine expects.
Useful Points for a Buyer
- Fits Toyota 1HZ diesel engines used in Land Cruiser models
- Casting sits flat and supports proper sealing
- Ports and chambers match the 1HZ layout for smooth airflow
- Helps solve issues caused by overheating, cracks, and compression loss
- Suitable for rebuilds, service centres, and fleet maintenance
In most cases, workshops choose a new head when the original one shows deep corrosion or repeated gasket failures. If you’re in that situation, this assembly gives you a fresh start without the guesswork of repairing an old casting.
Acme Impex checks each cylinder head for machining quality and clean surfaces before dispatch. You receive a part that fits the engine the way it should, helping you finish the job with less downtime.
If you’re rebuilding a 1HZ engine, this cylinder head assembly is a straightforward, dependable option that helps you bring the engine back to steady operation.