Description

When your tractor’s running rough, losing power, or you’re seeing white smoke from the exhaust, the problem often traces back to the cylinder head. Whether it’s cracked from overheating, warped from years of hard work, or just worn beyond repair, a bad head will sideline your operation when you need it most. This replacement cylinder head gets your Perkins AD4.203 engine back to full power and reliability.

What You’re Getting

Complete cylinder head assembly ready for installation with proper valve seats and guides
Cast iron construction built to handle the heat cycles and pressures of diesel operation
Precision-machined combustion chambers maintain proper compression ratios
Factory-spec valve train geometry ensures smooth operation and long valve life
Direct replacement design fits without modifications or special tools

Built for Real Farm Work

This head fits the reliable Perkins AD4.203 engine found in a wide range of Massey Ferguson tractors from utility models like the 155 and 158 up through mid-range workhorses like the 165, 260, and 560. You’ll also find this engine in the classic MF 65 and newer 765 models. These tractors handle everything from hay operations and livestock work to row crop farming and loader duties.

Made to Last

The AD4.203 is known for its durability, and this replacement head maintains that reputation. Cast from quality iron with proper heat treatment, it’s designed to handle the thermal stress of diesel combustion and the vibration of field work. The valve seats are hardened to resist wear from today’s fuel quality, while the water passages are sized for proper cooling flow.

Good to Know

Installing a cylinder head is a significant job that requires proper torque specifications and sequence. Make sure your block deck is straight and clean before installation. It’s smart to replace head studs, gaskets, and timing components while you’ve got everything apart. Check your cooling system thoroughly too – overheating that damaged the old head can quickly ruin a new one.