Toyota 4Y Cylinder head assembly 171524

This Toyota 4Y Cylinder Head Assembly 171524 works as a direct replacement for engines that start showing the usual problems—slow starts, uneven idle, or coolant loss around the head area. Most mechanics install a new head when the original piece bends from heat or develops internal cracks. This assembly sits straight on the 4Y block and matches the standard bolt pattern, so the job doesn’t drag on.

Another thing worth noting is the way the water passages and intake ports line up. Anyone who has opened a 4Y engine knows how sensitive these areas are. A clean casting helps the gasket hold better, especially on engines that run for long hours.

Workshops often use this assembly during full rebuilds on forklifts or commercial vans, since the 4Y engine usually runs under load. The new head supports stable compression and smoother running once the timing and valve train sit correctly.

Why many technicians pick this Toyota 4Y head

• Fits the 4Y engine layout without extra shaping or grinding
• Helps fix overheating damage, gasket leaks, and uneven compression
• Cast surfaces sit clean, helping the gasket hold properly
• Works well for commercial fleets, forklift repairs, and routine rebuilds

If you’re replacing a damaged head or freshening up a high-hour 4Y engine, this assembly gives you a straightforward way to bring the motor back to steady operation. Mechanics appreciate parts that fit without drama, and this one does the job.

At Acme Impex, each cylinder head goes through machining and casting checks before packing. This helps workshops avoid delays and keeps the rebuild process smooth.