Toyota Cylinder Head 5VZ assembly 171555
171555This Toyota 5VZ cylinder head assembly 171555 fits the 3.4L V6 engine and sits in place without hassle. It works well for engines that start losing compression, running rough, or showing signs of a cracked head. The casting sits clean, the oil passages line up, and the head holds timing the way the 5VZ setup expects. Workshops use this assembly to bring older engines back to steady running. It suits anyone repairing a work vehicle or finishing a complete top-end job.
The Toyota 5VZ cylinder head assembly 171555 works for the 3.4L V6 engine found in many utility and family vehicles. Mechanics often replace this head when the old one cracks near the exhaust side or starts showing uneven compression across cylinders. This assembly sits well on the block and lines up with the original 5VZ layout, so the install goes as expected.
One thing worth noting — the coolant and oil passages match the factory pattern, so you avoid the common alignment issues that happen with worn or repaired heads. The chamber shape also supports the standard 5VZ combustion pattern, which helps the engine settle into a smooth idle once everything is torqued down.
Most workshops pick this head when they want something clean to start with. It works for rebuild jobs, overheated engines, or vehicles that came in after long-term gasket failure. Once fitted, the engine usually picks up better breathing and steadier firing, especially when the old head was warped or cracked.
Why buyers choose this Toyota 5VZ cylinder head assembly
- Fits Toyota 5VZ-FE 3.4L V6 engines
- Supports proper compression and stable sealing
- Holds timing alignment during installation
- Works well for rebuilds, overheating repairs, and cracked-head replacements
- Helps restore smooth running in daily-driven and work vehicles
Another thing worth keeping in mind — this assembly gives workshops a straightforward option when they want to finish a job without delays. It sits clean, holds torque properly, and supports the engine once everything is back together.
At Acme Impex, each cylinder head passes a casting and machining check before dispatch. You get a part that sits right on the engine and supports long-term use.
If you’re rebuilding a Toyota 5VZ engine or sorting out a top-end failure, this cylinder head assembly is a practical, ready-to-fit choice that helps you finish the repair with confidence.